chore: refactoring and tests, splitting up files (#12495)

37 files changed, 4490 insertions, 3281 deletions

diff --git a/packages/app/src/pages/directory-layout.tsx b/packages/app/src/pages/directory-layout.tsx
index da4667a82..2f4db8564 100644
--- a/packages/app/src/pages/directory-layout.tsx
+++ b/packages/app/src/pages/directory-layout.tsx
@@ -25,7 +25,7 @@ export default function Layout(props: ParentProps) {
     showToast({
       variant: "error",
       title: language.t("common.requestFailed"),
-      description: "Invalid directory in URL.",
+      description: language.t("directory.error.invalidUrl"),
     })
     navigate("/")
   })
diff --git a/packages/app/src/pages/layout.tsx b/packages/app/src/pages/layout.tsx
index 3b66258c9..59adef469 100644
--- a/packages/app/src/pages/layout.tsx
+++ b/packages/app/src/pages/layout.tsx
@@ -2,53 +2,34 @@ import {
   batch,
   createEffect,
   createMemo,
-  createSignal,
   For,
-  Match,
   on,
   onCleanup,
   onMount,
   ParentProps,
   Show,
-  Switch,
   untrack,
-  type Accessor,
   type JSX,
 } from "solid-js"
 import { A, useNavigate, useParams } from "@solidjs/router"
-import { useLayout, getAvatarColors, LocalProject } from "@/context/layout"
+import { useLayout, LocalProject } from "@/context/layout"
 import { useGlobalSync } from "@/context/global-sync"
 import { Persist, persisted } from "@/utils/persist"
 import { base64Encode } from "@opencode-ai/util/encode"
 import { decode64 } from "@/utils/base64"
-import { Avatar } from "@opencode-ai/ui/avatar"
 import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
 import { Button } from "@opencode-ai/ui/button"
 import { Icon } from "@opencode-ai/ui/icon"
 import { IconButton } from "@opencode-ai/ui/icon-button"
-import { InlineInput } from "@opencode-ai/ui/inline-input"
 import { Tooltip, TooltipKeybind } from "@opencode-ai/ui/tooltip"
-import { HoverCard } from "@opencode-ai/ui/hover-card"
-import { MessageNav } from "@opencode-ai/ui/message-nav"
 import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
-import { ContextMenu } from "@opencode-ai/ui/context-menu"
-import { Collapsible } from "@opencode-ai/ui/collapsible"
-import { DiffChanges } from "@opencode-ai/ui/diff-changes"
-import { Spinner } from "@opencode-ai/ui/spinner"
 import { Dialog } from "@opencode-ai/ui/dialog"
 import { getFilename } from "@opencode-ai/util/path"
-import { Session, type Message, type TextPart } from "@opencode-ai/sdk/v2/client"
+import { Session, type Message } from "@opencode-ai/sdk/v2/client"
 import { usePlatform } from "@/context/platform"
 import { useSettings } from "@/context/settings"
 import { createStore, produce, reconcile } from "solid-js/store"
-import {
-  DragDropProvider,
-  DragDropSensors,
-  DragOverlay,
-  SortableProvider,
-  closestCenter,
-  createSortable,
-} from "@thisbeyond/solid-dnd"
+import { DragDropProvider, DragDropSensors, DragOverlay, SortableProvider, closestCenter } from "@thisbeyond/solid-dnd"
 import type { DragEvent } from "@thisbeyond/solid-dnd"
 import { useProviders } from "@/hooks/use-providers"
 import { showToast, Toast, toaster } from "@opencode-ai/ui/toast"
@@ -60,7 +41,6 @@ import { retry } from "@opencode-ai/util/retry"
 import { playSound, soundSrc } from "@/utils/sound"
 import { createAim } from "@/utils/aim"
 import { Worktree as WorktreeState } from "@/utils/worktree"
-import { agentColor } from "@/utils/agent"
 
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { useTheme, type ColorScheme } from "@opencode-ai/ui/theme"
@@ -75,44 +55,26 @@ import { DialogEditProject } from "@/components/dialog-edit-project"
 import { Titlebar } from "@/components/titlebar"
 import { useServer } from "@/context/server"
 import { useLanguage, type Locale } from "@/context/language"
-
-const OPENCODE_PROJECT_ID = "4b0ea68d7af9a6031a7ffda7ad66e0cb83315750"
-
-const workspaceKey = (directory: string) => directory.replace(/[\\/]+$/, "")
-
-function sortSessions(now: number) {
-  const oneMinuteAgo = now - 60 * 1000
-  return (a: Session, b: Session) => {
-    const aUpdated = a.time.updated ?? a.time.created
-    const bUpdated = b.time.updated ?? b.time.created
-    const aRecent = aUpdated > oneMinuteAgo
-    const bRecent = bUpdated > oneMinuteAgo
-    if (aRecent && bRecent) return a.id < b.id ? -1 : a.id > b.id ? 1 : 0
-    if (aRecent && !bRecent) return -1
-    if (!aRecent && bRecent) return 1
-    return bUpdated - aUpdated
-  }
-}
-
-const isRootVisibleSession = (session: Session, directory: string) =>
-  workspaceKey(session.directory) === workspaceKey(directory) && !session.parentID && !session.time?.archived
-
-const sortedRootSessions = (store: { session: Session[]; path: { directory: string } }, now: number) =>
-  store.session.filter((session) => isRootVisibleSession(session, store.path.directory)).toSorted(sortSessions(now))
-
-const childMapByParent = (sessions: Session[]) => {
-  const map = new Map<string, string[]>()
-  for (const session of sessions) {
-    if (!session.parentID) continue
-    const existing = map.get(session.parentID)
-    if (existing) {
-      existing.push(session.id)
-      continue
-    }
-    map.set(session.parentID, [session.id])
-  }
-  return map
-}
+import {
+  childMapByParent,
+  displayName,
+  errorMessage,
+  getDraggableId,
+  sortedRootSessions,
+  syncWorkspaceOrder,
+  workspaceKey,
+} from "./layout/helpers"
+import { collectOpenProjectDeepLinks, deepLinkEvent, drainPendingDeepLinks } from "./layout/deep-links"
+import { createInlineEditorController } from "./layout/inline-editor"
+import {
+  LocalWorkspace,
+  SortableWorkspace,
+  WorkspaceDragOverlay,
+  type WorkspaceSidebarContext,
+} from "./layout/sidebar-workspace"
+import { workspaceOpenState } from "./layout/sidebar-workspace-helpers"
+import { ProjectDragOverlay, SortableProject, type ProjectSidebarContext } from "./layout/sidebar-project"
+import { SidebarContent } from "./layout/sidebar-shell"
 
 export default function Layout(props: ParentProps) {
   const [store, setStore, , ready] = persisted(
@@ -168,10 +130,7 @@ export default function Layout(props: ParentProps) {
     nav: undefined as HTMLElement | undefined,
   })
 
-  const [editor, setEditor] = createStore({
-    active: "" as string,
-    value: "",
-  })
+  const editor = createInlineEditorController()
   const setBusy = (directory: string, value: boolean) => {
     const key = workspaceKey(directory)
     setState("busyWorkspaces", (prev) => {
@@ -202,6 +161,8 @@ export default function Layout(props: ParentProps) {
 
   const sidebarHovering = createMemo(() => !layout.sidebar.opened() && state.hoverProject !== undefined)
   const sidebarExpanded = createMemo(() => layout.sidebar.opened() || sidebarHovering())
+  const clearHoverProjectSoon = () => queueMicrotask(() => setState("hoverProject", undefined))
+  const setHoverSession = (id: string | undefined) => setState("hoverSession", id)
 
   const hoverProjectData = createMemo(() => {
     const id = state.hoverProject
@@ -253,99 +214,11 @@ export default function Layout(props: ParentProps) {
     setState("autoselect", false)
   })
 
-  const editorOpen = (id: string) => editor.active === id
-  const editorValue = () => editor.value
-
-  const openEditor = (id: string, value: string) => {
-    if (!id) return
-    setEditor({ active: id, value })
-  }
-
-  const closeEditor = () => setEditor({ active: "", value: "" })
-
-  const saveEditor = (callback: (next: string) => void) => {
-    const next = editor.value.trim()
-    if (!next) {
-      closeEditor()
-      return
-    }
-    closeEditor()
-    callback(next)
-  }
-
-  const editorKeyDown = (event: KeyboardEvent, callback: (next: string) => void) => {
-    if (event.key === "Enter") {
-      event.preventDefault()
-      saveEditor(callback)
-      return
-    }
-    if (event.key === "Escape") {
-      event.preventDefault()
-      closeEditor()
-    }
-  }
-
-  const InlineEditor = (props: {
-    id: string
-    value: Accessor<string>
-    onSave: (next: string) => void
-    class?: string
-    displayClass?: string
-    editing?: boolean
-    stopPropagation?: boolean
-    openOnDblClick?: boolean
-  }) => {
-    const isEditing = () => props.editing ?? editorOpen(props.id)
-    const stopEvents = () => props.stopPropagation ?? false
-    const allowDblClick = () => props.openOnDblClick ?? true
-    const stopPropagation = (event: Event) => {
-      if (!stopEvents()) return
-      event.stopPropagation()
-    }
-    const handleDblClick = (event: MouseEvent) => {
-      if (!allowDblClick()) return
-      stopPropagation(event)
-      openEditor(props.id, props.value())
-    }
-
-    return (
-      <Show
-        when={isEditing()}
-        fallback={
-          <span
-            class={props.displayClass ?? props.class}
-            onDblClick={handleDblClick}
-            onPointerDown={stopPropagation}
-            onMouseDown={stopPropagation}
-            onClick={stopPropagation}
-            onTouchStart={stopPropagation}
-          >
-            {props.value()}
-          </span>
-        }
-      >
-        <InlineInput
-          ref={(el) => {
-            requestAnimationFrame(() => el.focus())
-          }}
-          value={editorValue()}
-          class={props.class}
-          onInput={(event) => setEditor("value", event.currentTarget.value)}
-          onKeyDown={(event) => {
-            event.stopPropagation()
-            editorKeyDown(event, props.onSave)
-          }}
-          onBlur={() => closeEditor()}
-          onPointerDown={stopPropagation}
-          onClick={stopPropagation}
-          onDblClick={stopPropagation}
-          onMouseDown={stopPropagation}
-          onMouseUp={stopPropagation}
-          onTouchStart={stopPropagation}
-        />
-      </Show>
-    )
-  }
+  const editorOpen = editor.editorOpen
+  const openEditor = editor.openEditor
+  const closeEditor = editor.closeEditor
+  const setEditor = editor.setEditor
+  const InlineEditor = editor.InlineEditor
 
   function cycleTheme(direction = 1) {
     const ids = availableThemeEntries().map(([id]) => id)
@@ -670,15 +543,12 @@ export default function Layout(props: ParentProps) {
     const local = project.worktree
     const dirs = [project.worktree, ...(project.sandboxes ?? [])]
     const existing = store.workspaceOrder[project.worktree]
+    const merged = syncWorkspaceOrder(local, dirs, existing)
     if (!existing) {
-      setStore("workspaceOrder", project.worktree, dirs)
+      setStore("workspaceOrder", project.worktree, merged)
       return
     }
 
-    const keep = existing.filter((d) => d !== local && dirs.includes(d))
-    const missing = dirs.filter((d) => d !== local && !existing.includes(d))
-    const merged = [local, ...missing, ...keep]
-
     if (merged.length !== existing.length) {
       setStore("workspaceOrder", project.worktree, merged)
       return
@@ -1241,33 +1111,13 @@ export default function Layout(props: ParentProps) {
     if (navigate) navigateToProject(directory)
   }
 
-  const deepLinkEvent = "opencode:deep-link"
-
-  const parseDeepLink = (input: string) => {
-    if (!input.startsWith("opencode://")) return
-    const url = new URL(input)
-    if (url.hostname !== "open-project") return
-    const directory = url.searchParams.get("directory")
-    if (!directory) return
-    return directory
-  }
-
   const handleDeepLinks = (urls: string[]) => {
     if (!server.isLocal()) return
-    for (const input of urls) {
-      const directory = parseDeepLink(input)
-      if (!directory) continue
+    for (const directory of collectOpenProjectDeepLinks(urls)) {
       openProject(directory)
     }
   }
 
-  const drainDeepLinks = () => {
-    const pending = window.__OPENCODE__?.deepLinks ?? []
-    if (pending.length === 0) return
-    if (window.__OPENCODE__) window.__OPENCODE__.deepLinks = []
-    handleDeepLinks(pending)
-  }
-
   onMount(() => {
     const handler = (event: Event) => {
       const detail = (event as CustomEvent<{ urls: string[] }>).detail
@@ -1276,13 +1126,11 @@ export default function Layout(props: ParentProps) {
       handleDeepLinks(urls)
     }
 
-    drainDeepLinks()
+    handleDeepLinks(drainPendingDeepLinks(window))
     window.addEventListener(deepLinkEvent, handler as EventListener)
     onCleanup(() => window.removeEventListener(deepLinkEvent, handler as EventListener))
   })
 
-  const displayName = (project: LocalProject) => project.name || getFilename(project.worktree)
-
   async function renameProject(project: LocalProject, next: string) {
     const current = displayName(project)
     if (next === current) return
@@ -1310,6 +1158,18 @@ export default function Layout(props: ParentProps) {
     else navigate("/")
   }
 
+  function toggleProjectWorkspaces(project: LocalProject) {
+    const enabled = layout.sidebar.workspaces(project.worktree)()
+    if (enabled) {
+      layout.sidebar.toggleWorkspaces(project.worktree)
+      return
+    }
+    if (project.vcs !== "git") return
+    layout.sidebar.toggleWorkspaces(project.worktree)
+  }
+
+  const showEditProjectDialog = (project: LocalProject) => dialog.show(() => <DialogEditProject project={project} />)
+
   async function chooseProject() {
     function resolve(result: string | string[] | null) {
       if (Array.isArray(result)) {
@@ -1336,15 +1196,6 @@ export default function Layout(props: ParentProps) {
     }
   }
 
-  const errorMessage = (err: unknown) => {
-    if (err && typeof err === "object" && "data" in err) {
-      const data = (err as { data?: { message?: string } }).data
-      if (data?.message) return data.message
-    }
-    if (err instanceof Error) return err.message
-    return language.t("common.requestFailed")
-  }
-
   const deleteWorkspace = async (root: string, directory: string) => {
     if (directory === root) return
 
@@ -1356,7 +1207,7 @@ export default function Layout(props: ParentProps) {
       .catch((err) => {
         showToast({
           title: language.t("workspace.delete.failed.title"),
-          description: errorMessage(err),
+          description: errorMessage(err, language.t("common.requestFailed")),
         })
         return false
       })
@@ -1395,7 +1246,7 @@ export default function Layout(props: ParentProps) {
       .catch((err) => {
         showToast({
           title: language.t("workspace.reset.failed.title"),
-          description: errorMessage(err),
+          description: errorMessage(err, language.t("common.requestFailed")),
         })
         return false
       })
@@ -1622,14 +1473,6 @@ export default function Layout(props: ParentProps) {
     globalSync.project.loadSessions(project.worktree)
   })
 
-  function getDraggableId(event: unknown): string | undefined {
-    if (typeof event !== "object" || event === null) return undefined
-    if (!("draggable" in event)) return undefined
-    const draggable = (event as { draggable?: { id?: unknown } }).draggable
-    if (!draggable) return undefined
-    return typeof draggable.id === "string" ? draggable.id : undefined
-  }
-
   function handleDragStart(event: unknown) {
     const id = getDraggableId(event)
     if (!id) return
@@ -1665,9 +1508,8 @@ export default function Layout(props: ParentProps) {
     const existing = store.workspaceOrder[project.worktree]
     if (!existing) return extra ? [...dirs, extra] : dirs
 
-    const keep = existing.filter((d) => d !== local && dirs.includes(d))
-    const missing = dirs.filter((d) => d !== local && !existing.includes(d))
-    const merged = [local, ...(pending && extra ? [extra] : []), ...missing, ...keep]
+    const merged = syncWorkspaceOrder(local, dirs, existing)
+    if (pending && extra) return [local, extra, ...merged.filter((directory) => directory !== local)]
     if (!extra) return merged
     if (pending) return merged
     return [...merged, extra]
@@ -1710,830 +1552,6 @@ export default function Layout(props: ParentProps) {
     setStore("activeWorkspace", undefined)
   }
 
-  const ProjectIcon = (props: { project: LocalProject; class?: string; notify?: boolean }): JSX.Element => {
-    const notification = useNotification()
-    const unseenCount = createMemo(() => notification.project.unseenCount(props.project.worktree))
-    const hasError = createMemo(() => notification.project.unseenHasError(props.project.worktree))
-    const name = createMemo(() => props.project.name || getFilename(props.project.worktree))
-    return (
-      <div class={`relative size-8 shrink-0 rounded ${props.class ?? ""}`}>
-        <div class="size-full rounded overflow-clip">
-          <Avatar
-            fallback={name()}
-            src={
-              props.project.id === OPENCODE_PROJECT_ID
-                ? "https://opencode.ai/favicon.svg"
-                : props.project.icon?.override
-            }
-            {...getAvatarColors(props.project.icon?.color)}
-            class="size-full rounded"
-            classList={{ "badge-mask": unseenCount() > 0 && props.notify }}
-          />
-        </div>
-        <Show when={unseenCount() > 0 && props.notify}>
-          <div
-            classList={{
-              "absolute top-px right-px size-1.5 rounded-full z-10": true,
-              "bg-icon-critical-base": hasError(),
-              "bg-text-interactive-base": !hasError(),
-            }}
-          />
-        </Show>
-      </div>
-    )
-  }
-
-  const SessionItem = (props: {
-    session: Session
-    slug: string
-    mobile?: boolean
-    dense?: boolean
-    popover?: boolean
-    children: Map<string, string[]>
-  }): JSX.Element => {
-    const notification = useNotification()
-    const unseenCount = createMemo(() => notification.session.unseenCount(props.session.id))
-    const hasError = createMemo(() => notification.session.unseenHasError(props.session.id))
-    const [sessionStore] = globalSync.child(props.session.directory)
-    const hasPermissions = createMemo(() => {
-      const permissions = sessionStore.permission?.[props.session.id] ?? []
-      if (permissions.length > 0) return true
-
-      for (const id of props.children.get(props.session.id) ?? []) {
-        const childPermissions = sessionStore.permission?.[id] ?? []
-        if (childPermissions.length > 0) return true
-      }
-      return false
-    })
-    const isWorking = createMemo(() => {
-      if (hasPermissions()) return false
-      const status = sessionStore.session_status[props.session.id]
-      return status?.type === "busy" || status?.type === "retry"
-    })
-
-    const tint = createMemo(() => {
-      const messages = sessionStore.message[props.session.id]
-      if (!messages) return undefined
-      let user: Message | undefined
-      for (let i = messages.length - 1; i >= 0; i--) {
-        const message = messages[i]
-        if (message.role !== "user") continue
-        user = message
-        break
-      }
-      if (!user?.agent) return undefined
-
-      const agent = sessionStore.agent.find((a) => a.name === user.agent)
-      return agentColor(user.agent, agent?.color)
-    })
-
-    const hoverMessages = createMemo(() =>
-      sessionStore.message[props.session.id]?.filter((message) => message.role === "user"),
-    )
-    const hoverReady = createMemo(() => sessionStore.message[props.session.id] !== undefined)
-    const hoverAllowed = createMemo(() => !props.mobile && sidebarExpanded())
-    const hoverEnabled = createMemo(() => (props.popover ?? true) && hoverAllowed())
-    const isActive = createMemo(() => props.session.id === params.id)
-
-    const hoverPrefetch = { current: undefined as ReturnType<typeof setTimeout> | undefined }
-    const cancelHoverPrefetch = () => {
-      if (hoverPrefetch.current === undefined) return
-      clearTimeout(hoverPrefetch.current)
-      hoverPrefetch.current = undefined
-    }
-    const scheduleHoverPrefetch = () => {
-      if (hoverPrefetch.current !== undefined) return
-      hoverPrefetch.current = setTimeout(() => {
-        hoverPrefetch.current = undefined
-        prefetchSession(props.session)
-      }, 200)
-    }
-
-    onCleanup(cancelHoverPrefetch)
-
-    const messageLabel = (message: Message) => {
-      const parts = sessionStore.part[message.id] ?? []
-      const text = parts.find((part): part is TextPart => part?.type === "text" && !part.synthetic && !part.ignored)
-      return text?.text
-    }
-
-    const item = (
-      <A
-        href={`${props.slug}/session/${props.session.id}`}
-        class={`flex items-center justify-between gap-3 min-w-0 text-left w-full focus:outline-none transition-[padding] ${props.mobile ? "pr-7" : ""} group-hover/session:pr-7 group-focus-within/session:pr-7 group-active/session:pr-7 ${props.dense ? "py-0.5" : "py-1"}`}
-        onPointerEnter={scheduleHoverPrefetch}
-        onPointerLeave={cancelHoverPrefetch}
-        onMouseEnter={scheduleHoverPrefetch}
-        onMouseLeave={cancelHoverPrefetch}
-        onFocus={() => prefetchSession(props.session, "high")}
-        onClick={() => {
-          setState("hoverSession", undefined)
-          if (layout.sidebar.opened()) return
-          queueMicrotask(() => setState("hoverProject", undefined))
-        }}
-      >
-        <div class="flex items-center gap-1 w-full">
-          <div
-            class="shrink-0 size-6 flex items-center justify-center"
-            style={{ color: tint() ?? "var(--icon-interactive-base)" }}
-          >
-            <Switch fallback={<Icon name="dash" size="small" class="text-icon-weak" />}>
-              <Match when={isWorking()}>
-                <Spinner class="size-[15px]" />
-              </Match>
-              <Match when={hasPermissions()}>
-                <div class="size-1.5 rounded-full bg-surface-warning-strong" />
-              </Match>
-              <Match when={hasError()}>
-                <div class="size-1.5 rounded-full bg-text-diff-delete-base" />
-              </Match>
-              <Match when={unseenCount() > 0}>
-                <div class="size-1.5 rounded-full bg-text-interactive-base" />
-              </Match>
-            </Switch>
-          </div>
-          <span class="text-14-regular text-text-strong grow-1 min-w-0 overflow-hidden text-ellipsis truncate">
-            {props.session.title}
-          </span>
-          <Show when={props.session.summary}>
-            {(summary) => (
-              <div class="group-hover/session:hidden group-active/session:hidden group-focus-within/session:hidden">
-                <DiffChanges changes={summary()} />
-              </div>
-            )}
-          </Show>
-        </div>
-      </A>
-    )
-
-    return (
-      <div
-        data-session-id={props.session.id}
-        class="group/session relative w-full rounded-md cursor-default transition-colors pl-2 pr-3
-               hover:bg-surface-raised-base-hover [&:has(:focus-visible)]:bg-surface-raised-base-hover has-[[data-expanded]]:bg-surface-raised-base-hover has-[.active]:bg-surface-base-active"
-      >
-        <Show
-          when={hoverEnabled()}
-          fallback={
-            <Tooltip placement={props.mobile ? "bottom" : "right"} value={props.session.title} gutter={10}>
-              {item}
-            </Tooltip>
-          }
-        >
-          <HoverCard
-            openDelay={1000}
-            closeDelay={sidebarHovering() ? 600 : 0}
-            placement="right-start"
-            gutter={16}
-            shift={-2}
-            trigger={item}
-            mount={!props.mobile ? state.nav : undefined}
-            open={state.hoverSession === props.session.id}
-            onOpenChange={(open) => setState("hoverSession", open ? props.session.id : undefined)}
-          >
-            <Show
-              when={hoverReady()}
-              fallback={<div class="text-12-regular text-text-weak">{language.t("session.messages.loading")}</div>}
-            >
-              <div class="overflow-y-auto max-h-72 h-full">
-                <MessageNav
-                  messages={hoverMessages() ?? []}
-                  current={undefined}
-                  getLabel={messageLabel}
-                  onMessageSelect={(message) => {
-                    if (!isActive()) {
-                      layout.pendingMessage.set(
-                        `${base64Encode(props.session.directory)}/${props.session.id}`,
-                        message.id,
-                      )
-                      navigate(`${props.slug}/session/${props.session.id}`)
-                      return
-                    }
-                    window.history.replaceState(null, "", `#message-${message.id}`)
-                    window.dispatchEvent(new HashChangeEvent("hashchange"))
-                  }}
-                  size="normal"
-                  class="w-60"
-                />
-              </div>
-            </Show>
-          </HoverCard>
-        </Show>
-        <div
-          class={`absolute ${props.dense ? "top-0.5 right-0.5" : "top-1 right-1"} flex items-center gap-0.5 transition-opacity`}
-          classList={{
-            "opacity-100 pointer-events-auto": !!props.mobile,
-            "opacity-0 pointer-events-none": !props.mobile,
-            "group-hover/session:opacity-100 group-hover/session:pointer-events-auto": true,
-            "group-focus-within/session:opacity-100 group-focus-within/session:pointer-events-auto": true,
-          }}
-        >
-          <Tooltip value={language.t("common.archive")} placement="top">
-            <IconButton
-              icon="archive"
-              variant="ghost"
-              class="size-6 rounded-md"
-              aria-label={language.t("common.archive")}
-              onClick={(event) => {
-                event.preventDefault()
-                event.stopPropagation()
-                void archiveSession(props.session)
-              }}
-            />
-          </Tooltip>
-        </div>
-      </div>
-    )
-  }
-
-  const NewSessionItem = (props: { slug: string; mobile?: boolean; dense?: boolean }): JSX.Element => {
-    const label = language.t("command.session.new")
-    const tooltip = () => props.mobile || !sidebarExpanded()
-    const item = (
-      <A
-        href={`${props.slug}/session`}
-        end
-        class={`flex items-center justify-between gap-3 min-w-0 text-left w-full focus:outline-none ${props.dense ? "py-0.5" : "py-1"}`}
-        onClick={() => {
-          setState("hoverSession", undefined)
-          if (layout.sidebar.opened()) return
-          queueMicrotask(() => setState("hoverProject", undefined))
-        }}
-      >
-        <div class="flex items-center gap-1 w-full">
-          <div class="shrink-0 size-6 flex items-center justify-center">
-            <Icon name="plus-small" size="small" class="text-icon-weak" />
-          </div>
-          <span class="text-14-regular text-text-strong grow-1 min-w-0 overflow-hidden text-ellipsis truncate">
-            {label}
-          </span>
-        </div>
-      </A>
-    )
-
-    return (
-      <div class="group/session relative w-full rounded-md cursor-default transition-colors pl-2 pr-3 hover:bg-surface-raised-base-hover [&:has(:focus-visible)]:bg-surface-raised-base-hover has-[.active]:bg-surface-base-active">
-        <Show
-          when={!tooltip()}
-          fallback={
-            <Tooltip placement={props.mobile ? "bottom" : "right"} value={label} gutter={10}>
-              {item}
-            </Tooltip>
-          }
-        >
-          {item}
-        </Show>
-      </div>
-    )
-  }
-
-  const SessionSkeleton = (props: { count?: number }): JSX.Element => {
-    const items = Array.from({ length: props.count ?? 4 }, (_, index) => index)
-    return (
-      <div class="flex flex-col gap-1">
-        <For each={items}>
-          {() => <div class="h-8 w-full rounded-md bg-surface-raised-base opacity-60 animate-pulse" />}
-        </For>
-      </div>
-    )
-  }
-
-  const ProjectDragOverlay = (): JSX.Element => {
-    const project = createMemo(() => layout.projects.list().find((p) => p.worktree === store.activeProject))
-    return (
-      <Show when={project()}>
-        {(p) => (
-          <div class="bg-background-base rounded-xl p-1">
-            <ProjectIcon project={p()} />
-          </div>
-        )}
-      </Show>
-    )
-  }
-
-  const WorkspaceDragOverlay = (): JSX.Element => {
-    const label = createMemo(() => {
-      const project = sidebarProject()
-      if (!project) return
-      const directory = store.activeWorkspace
-      if (!directory) return
-
-      const [workspaceStore] = globalSync.child(directory, { bootstrap: false })
-      const kind =
-        directory === project.worktree ? language.t("workspace.type.local") : language.t("workspace.type.sandbox")
-      const name = workspaceLabel(directory, workspaceStore.vcs?.branch, project.id)
-      return `${kind} : ${name}`
-    })
-
-    return (
-      <Show when={label()}>
-        {(value) => (
-          <div class="bg-background-base rounded-md px-2 py-1 text-14-medium text-text-strong">{value()}</div>
-        )}
-      </Show>
-    )
-  }
-
-  const SortableWorkspace = (props: { directory: string; project: LocalProject; mobile?: boolean }): JSX.Element => {
-    const sortable = createSortable(props.directory)
-    const [workspaceStore, setWorkspaceStore] = globalSync.child(props.directory, { bootstrap: false })
-    const [menu, setMenu] = createStore({
-      open: false,
-      pendingRename: false,
-    })
-    const slug = createMemo(() => base64Encode(props.directory))
-    const sessions = createMemo(() => sortedRootSessions(workspaceStore, Date.now()))
-    const children = createMemo(() => childMapByParent(workspaceStore.session))
-    const local = createMemo(() => props.directory === props.project.worktree)
-    const active = createMemo(() => currentDir() === props.directory)
-    const workspaceValue = createMemo(() => {
-      const branch = workspaceStore.vcs?.branch
-      const name = branch ?? getFilename(props.directory)
-      return workspaceName(props.directory, props.project.id, branch) ?? name
-    })
-    const open = createMemo(() => store.workspaceExpanded[props.directory] ?? local())
-    const boot = createMemo(() => open() || active())
-    const booted = createMemo((prev) => prev || workspaceStore.status === "complete", false)
-    const hasMore = createMemo(() => workspaceStore.sessionTotal > sessions().length)
-    const busy = createMemo(() => isBusy(props.directory))
-    const wasBusy = createMemo((prev) => prev || busy(), false)
-    const loading = createMemo(() => open() && !booted() && sessions().length === 0 && !wasBusy())
-    const loadMore = async () => {
-      setWorkspaceStore("limit", (limit) => limit + 5)
-      await globalSync.project.loadSessions(props.directory)
-    }
-
-    const workspaceEditActive = createMemo(() => editorOpen(`workspace:${props.directory}`))
-
-    const openWrapper = (value: boolean) => {
-      setStore("workspaceExpanded", props.directory, value)
-      if (value) return
-      if (editorOpen(`workspace:${props.directory}`)) closeEditor()
-    }
-
-    createEffect(() => {
-      if (!boot()) return
-      globalSync.child(props.directory, { bootstrap: true })
-    })
-
-    const header = () => (
-      <div class="flex items-center gap-1 min-w-0 flex-1">
-        <div class="flex items-center justify-center shrink-0 size-6">
-          <Show when={busy()} fallback={<Icon name="branch" size="small" />}>
-            <Spinner class="size-[15px]" />
-          </Show>
-        </div>
-        <span class="text-14-medium text-text-base shrink-0">
-          {local() ? language.t("workspace.type.local") : language.t("workspace.type.sandbox")} :
-        </span>
-        <Show
-          when={!local()}
-          fallback={
-            <span class="text-14-medium text-text-base min-w-0 truncate">
-              {workspaceStore.vcs?.branch ?? getFilename(props.directory)}
-            </span>
-          }
-        >
-          <InlineEditor
-            id={`workspace:${props.directory}`}
-            value={workspaceValue}
-            onSave={(next) => {
-              const trimmed = next.trim()
-              if (!trimmed) return
-              renameWorkspace(props.directory, trimmed, props.project.id, workspaceStore.vcs?.branch)
-              setEditor("value", workspaceValue())
-            }}
-            class="text-14-medium text-text-base min-w-0 truncate"
-            displayClass="text-14-medium text-text-base min-w-0 truncate"
-            editing={workspaceEditActive()}
-            stopPropagation={false}
-            openOnDblClick={false}
-          />
-        </Show>
-        <Icon
-          name={open() ? "chevron-down" : "chevron-right"}
-          size="small"
-          class="shrink-0 text-icon-base opacity-0 transition-opacity group-hover/workspace:opacity-100 group-focus-within/workspace:opacity-100"
-        />
-      </div>
-    )
-
-    return (
-      <div
-        // @ts-ignore
-        use:sortable
-        classList={{
-          "opacity-30": sortable.isActiveDraggable,
-          "opacity-50 pointer-events-none": busy(),
-        }}
-      >
-        <Collapsible variant="ghost" open={open()} class="shrink-0" onOpenChange={openWrapper}>
-          <div class="px-2 py-1">
-            <div
-              class="group/workspace relative"
-              data-component="workspace-item"
-              data-workspace={base64Encode(props.directory)}
-            >
-              <div class="flex items-center gap-1">
-                <Show
-                  when={workspaceEditActive()}
-                  fallback={
-                    <Collapsible.Trigger
-                      class="flex items-center justify-between w-full pl-2 pr-16 py-1.5 rounded-md hover:bg-surface-raised-base-hover"
-                      data-action="workspace-toggle"
-                      data-workspace={base64Encode(props.directory)}
-                    >
-                      {header()}
-                    </Collapsible.Trigger>
-                  }
-                >
-                  <div class="flex items-center justify-between w-full pl-2 pr-16 py-1.5 rounded-md">{header()}</div>
-                </Show>
-                <div
-                  class="absolute right-1 top-1/2 -translate-y-1/2 flex items-center gap-0.5 transition-opacity"
-                  classList={{
-                    "opacity-100 pointer-events-auto": menu.open,
-                    "opacity-0 pointer-events-none": !menu.open,
-                    "group-hover/workspace:opacity-100 group-hover/workspace:pointer-events-auto": true,
-                    "group-focus-within/workspace:opacity-100 group-focus-within/workspace:pointer-events-auto": true,
-                  }}
-                >
-                  <DropdownMenu
-                    modal={!sidebarHovering()}
-                    open={menu.open}
-                    onOpenChange={(open) => setMenu("open", open)}
-                  >
-                    <Tooltip value={language.t("common.moreOptions")} placement="top">
-                      <DropdownMenu.Trigger
-                        as={IconButton}
-                        icon="dot-grid"
-                        variant="ghost"
-                        class="size-6 rounded-md"
-                        data-action="workspace-menu"
-                        data-workspace={base64Encode(props.directory)}
-                        aria-label={language.t("common.moreOptions")}
-                      />
-                    </Tooltip>
-                    <DropdownMenu.Portal mount={!props.mobile ? state.nav : undefined}>
-                      <DropdownMenu.Content
-                        onCloseAutoFocus={(event) => {
-                          if (!menu.pendingRename) return
-                          event.preventDefault()
-                          setMenu("pendingRename", false)
-                          openEditor(`workspace:${props.directory}`, workspaceValue())
-                        }}
-                      >
-                        <DropdownMenu.Item
-                          disabled={local()}
-                          onSelect={() => {
-                            setMenu("pendingRename", true)
-                            setMenu("open", false)
-                          }}
-                        >
-                          <DropdownMenu.ItemLabel>{language.t("common.rename")}</DropdownMenu.ItemLabel>
-                        </DropdownMenu.Item>
-                        <DropdownMenu.Item
-                          disabled={local() || busy()}
-                          onSelect={() =>
-                            dialog.show(() => (
-                              <DialogResetWorkspace root={props.project.worktree} directory={props.directory} />
-                            ))
-                          }
-                        >
-                          <DropdownMenu.ItemLabel>{language.t("common.reset")}</DropdownMenu.ItemLabel>
-                        </DropdownMenu.Item>
-                        <DropdownMenu.Item
-                          disabled={local() || busy()}
-                          onSelect={() =>
-                            dialog.show(() => (
-                              <DialogDeleteWorkspace root={props.project.worktree} directory={props.directory} />
-                            ))
-                          }
-                        >
-                          <DropdownMenu.ItemLabel>{language.t("common.delete")}</DropdownMenu.ItemLabel>
-                        </DropdownMenu.Item>
-                      </DropdownMenu.Content>
-                    </DropdownMenu.Portal>
-                  </DropdownMenu>
-                </div>
-              </div>
-            </div>
-          </div>
-
-          <Collapsible.Content>
-            <nav class="flex flex-col gap-1 px-2">
-              <NewSessionItem slug={slug()} mobile={props.mobile} />
-              <Show when={loading()}>
-                <SessionSkeleton />
-              </Show>
-              <For each={sessions()}>
-                {(session) => (
-                  <SessionItem session={session} slug={slug()} mobile={props.mobile} children={children()} />
-                )}
-              </For>
-              <Show when={hasMore()}>
-                <div class="relative w-full py-1">
-                  <Button
-                    variant="ghost"
-                    class="flex w-full text-left justify-start text-14-regular text-text-weak pl-9 pr-10"
-                    size="large"
-                    onClick={(e: MouseEvent) => {
-                      loadMore()
-                      ;(e.currentTarget as HTMLButtonElement).blur()
-                    }}
-                  >
-                    {language.t("common.loadMore")}
-                  </Button>
-                </div>
-              </Show>
-            </nav>
-          </Collapsible.Content>
-        </Collapsible>
-      </div>
-    )
-  }
-
-  const SortableProject = (props: { project: LocalProject; mobile?: boolean }): JSX.Element => {
-    const sortable = createSortable(props.project.worktree)
-    const selected = createMemo(() => {
-      const current = currentDir()
-      return props.project.worktree === current || props.project.sandboxes?.includes(current)
-    })
-
-    const workspaces = createMemo(() => workspaceIds(props.project).slice(0, 2))
-    const workspaceEnabled = createMemo(
-      () => props.project.vcs === "git" && layout.sidebar.workspaces(props.project.worktree)(),
-    )
-    const [open, setOpen] = createSignal(false)
-    const [menu, setMenu] = createSignal(false)
-
-    const preview = createMemo(() => !props.mobile && layout.sidebar.opened())
-    const overlay = createMemo(() => !props.mobile && !layout.sidebar.opened())
-    const active = createMemo(
-      () => menu() || (preview() ? open() : overlay() && state.hoverProject === props.project.worktree),
-    )
-
-    createEffect(() => {
-      if (preview()) return
-      if (!open()) return
-      setOpen(false)
-    })
-
-    const label = (directory: string) => {
-      const [data] = globalSync.child(directory, { bootstrap: false })
-      const kind =
-        directory === props.project.worktree ? language.t("workspace.type.local") : language.t("workspace.type.sandbox")
-      const name = workspaceLabel(directory, data.vcs?.branch, props.project.id)
-      return `${kind} : ${name}`
-    }
-
-    const projectStore = createMemo(() => globalSync.child(props.project.worktree, { bootstrap: false })[0])
-    const projectSessions = createMemo(() => sortedRootSessions(projectStore(), Date.now()).slice(0, 2))
-    const projectChildren = createMemo(() => childMapByParent(projectStore().session))
-    const workspaceSessions = (directory: string) => {
-      const [data] = globalSync.child(directory, { bootstrap: false })
-      return sortedRootSessions(data, Date.now()).slice(0, 2)
-    }
-    const workspaceChildren = (directory: string) => {
-      const [data] = globalSync.child(directory, { bootstrap: false })
-      return childMapByParent(data.session)
-    }
-
-    const projectName = () => props.project.name || getFilename(props.project.worktree)
-    const Trigger = () => (
-      <ContextMenu
-        modal={!sidebarHovering()}
-        onOpenChange={(value) => {
-          setMenu(value)
-          if (value) setOpen(false)
-        }}
-      >
-        <ContextMenu.Trigger
-          as="button"
-          type="button"
-          aria-label={projectName()}
-          data-action="project-switch"
-          data-project={base64Encode(props.project.worktree)}
-          classList={{
-            "flex items-center justify-center size-10 p-1 rounded-lg overflow-hidden transition-colors cursor-default": true,
-            "bg-transparent border-2 border-icon-strong-base hover:bg-surface-base-hover": selected(),
-            "bg-transparent border border-transparent hover:bg-surface-base-hover hover:border-border-weak-base":
-              !selected() && !active(),
-            "bg-surface-base-hover border border-border-weak-base": !selected() && active(),
-          }}
-          onMouseEnter={(event: MouseEvent) => {
-            if (!overlay()) return
-            aim.enter(props.project.worktree, event)
-          }}
-          onMouseLeave={() => {
-            if (!overlay()) return
-            aim.leave(props.project.worktree)
-          }}
-          onFocus={() => {
-            if (!overlay()) return
-            aim.activate(props.project.worktree)
-          }}
-          onClick={() => navigateToProject(props.project.worktree)}
-          onBlur={() => setOpen(false)}
-        >
-          <ProjectIcon project={props.project} notify />
-        </ContextMenu.Trigger>
-        <ContextMenu.Portal mount={!props.mobile ? state.nav : undefined}>
-          <ContextMenu.Content>
-            <ContextMenu.Item onSelect={() => dialog.show(() => <DialogEditProject project={props.project} />)}>
-              <ContextMenu.ItemLabel>{language.t("common.edit")}</ContextMenu.ItemLabel>
-            </ContextMenu.Item>
-            <ContextMenu.Item
-              data-action="project-workspaces-toggle"
-              data-project={base64Encode(props.project.worktree)}
-              disabled={props.project.vcs !== "git" && !layout.sidebar.workspaces(props.project.worktree)()}
-              onSelect={() => {
-                const enabled = layout.sidebar.workspaces(props.project.worktree)()
-                if (enabled) {
-                  layout.sidebar.toggleWorkspaces(props.project.worktree)
-                  return
-                }
-                if (props.project.vcs !== "git") return
-                layout.sidebar.toggleWorkspaces(props.project.worktree)
-              }}
-            >
-              <ContextMenu.ItemLabel>
-                {layout.sidebar.workspaces(props.project.worktree)()
-                  ? language.t("sidebar.workspaces.disable")
-                  : language.t("sidebar.workspaces.enable")}
-              </ContextMenu.ItemLabel>
-            </ContextMenu.Item>
-            <ContextMenu.Separator />
-            <ContextMenu.Item
-              data-action="project-close-menu"
-              data-project={base64Encode(props.project.worktree)}
-              onSelect={() => closeProject(props.project.worktree)}
-            >
-              <ContextMenu.ItemLabel>{language.t("common.close")}</ContextMenu.ItemLabel>
-            </ContextMenu.Item>
-          </ContextMenu.Content>
-        </ContextMenu.Portal>
-      </ContextMenu>
-    )
-
-    return (
-      // @ts-ignore
-      <div use:sortable classList={{ "opacity-30": sortable.isActiveDraggable }}>
-        <Show when={preview()} fallback={<Trigger />}>
-          <HoverCard
-            open={open() && !menu()}
-            openDelay={0}
-            closeDelay={0}
-            placement="right-start"
-            gutter={6}
-            trigger={<Trigger />}
-            onOpenChange={(value) => {
-              if (menu()) return
-              setOpen(value)
-              if (value) setState("hoverSession", undefined)
-            }}
-          >
-            <div class="-m-3 p-2 flex flex-col w-72">
-              <div class="px-4 pt-2 pb-1 flex items-center gap-2">
-                <div class="text-14-medium text-text-strong truncate grow">{displayName(props.project)}</div>
-                <Tooltip value={language.t("common.close")} placement="top" gutter={6}>
-                  <IconButton
-                    icon="circle-x"
-                    variant="ghost"
-                    class="shrink-0"
-                    data-action="project-close-hover"
-                    data-project={base64Encode(props.project.worktree)}
-                    aria-label={language.t("common.close")}
-                    onClick={(event) => {
-                      event.stopPropagation()
-                      setOpen(false)
-                      closeProject(props.project.worktree)
-                    }}
-                  />
-                </Tooltip>
-              </div>
-              <div class="px-4 pb-2 text-12-medium text-text-weak">{language.t("sidebar.project.recentSessions")}</div>
-              <div class="px-2 pb-2 flex flex-col gap-2">
-                <Show
-                  when={workspaceEnabled()}
-                  fallback={
-                    <For each={projectSessions()}>
-                      {(session) => (
-                        <SessionItem
-                          session={session}
-                          slug={base64Encode(props.project.worktree)}
-                          dense
-                          mobile={props.mobile}
-                          popover={false}
-                          children={projectChildren()}
-                        />
-                      )}
-                    </For>
-                  }
-                >
-                  <For each={workspaces()}>
-                    {(directory) => {
-                      const sessions = createMemo(() => workspaceSessions(directory))
-                      const children = createMemo(() => workspaceChildren(directory))
-                      return (
-                        <div class="flex flex-col gap-1">
-                          <div class="px-2 py-0.5 flex items-center gap-1 min-w-0">
-                            <div class="shrink-0 size-6 flex items-center justify-center">
-                              <Icon name="branch" size="small" class="text-icon-base" />
-                            </div>
-                            <span class="truncate text-14-medium text-text-base">{label(directory)}</span>
-                          </div>
-                          <For each={sessions()}>
-                            {(session) => (
-                              <SessionItem
-                                session={session}
-                                slug={base64Encode(directory)}
-                                dense
-                                mobile={props.mobile}
-                                popover={false}
-                                children={children()}
-                              />
-                            )}
-                          </For>
-                        </div>
-                      )
-                    }}
-                  </For>
-                </Show>
-              </div>
-              <div class="px-2 py-2 border-t border-border-weak-base">
-                <Button
-                  variant="ghost"
-                  class="flex w-full text-left justify-start text-text-base px-2 hover:bg-transparent active:bg-transparent"
-                  onClick={() => {
-                    layout.sidebar.open()
-                    setOpen(false)
-                    if (selected()) {
-                      return
-                    }
-                    navigateToProject(props.project.worktree)
-                  }}
-                >
-                  {language.t("sidebar.project.viewAllSessions")}
-                </Button>
-              </div>
-            </div>
-          </HoverCard>
-        </Show>
-      </div>
-    )
-  }
-
-  const LocalWorkspace = (props: { project: LocalProject; mobile?: boolean }): JSX.Element => {
-    const workspace = createMemo(() => {
-      const [store, setStore] = globalSync.child(props.project.worktree)
-      return { store, setStore }
-    })
-    const slug = createMemo(() => base64Encode(props.project.worktree))
-    const sessions = createMemo(() => sortedRootSessions(workspace().store, Date.now()))
-    const children = createMemo(() => childMapByParent(workspace().store.session))
-    const booted = createMemo((prev) => prev || workspace().store.status === "complete", false)
-    const loading = createMemo(() => !booted() && sessions().length === 0)
-    const hasMore = createMemo(() => workspace().store.sessionTotal > sessions().length)
-    const loadMore = async () => {
-      workspace().setStore("limit", (limit) => limit + 5)
-      await globalSync.project.loadSessions(props.project.worktree)
-    }
-
-    return (
-      <div
-        ref={(el) => {
-          if (!props.mobile) scrollContainerRef = el
-        }}
-        class="size-full flex flex-col py-2 overflow-y-auto no-scrollbar [overflow-anchor:none]"
-      >
-        <nav class="flex flex-col gap-1 px-2">
-          <Show when={loading()}>
-            <SessionSkeleton />
-          </Show>
-          <For each={sessions()}>
-            {(session) => <SessionItem session={session} slug={slug()} mobile={props.mobile} children={children()} />}
-          </For>
-          <Show when={hasMore()}>
-            <div class="relative w-full py-1">
-              <Button
-                variant="ghost"
-                class="flex w-full text-left justify-start text-14-regular text-text-weak pl-9 pr-10"
-                size="large"
-                onClick={(e: MouseEvent) => {
-                  loadMore()
-                  ;(e.currentTarget as HTMLButtonElement).blur()
-                }}
-              >
-                {language.t("common.loadMore")}
-              </Button>
-            </div>
-          </Show>
-        </nav>
-      </div>
-    )
-  }
-
   const createWorkspace = async (project: LocalProject) => {
     if (!layout.sidebar.opened()) {
       setState("hoverSession", undefined)
@@ -2545,7 +1563,7 @@ export default function Layout(props: ParentProps) {
       .catch((err) => {
         showToast({
           title: language.t("workspace.create.failed.title"),
-          description: errorMessage(err),
+          description: errorMessage(err, language.t("common.requestFailed")),
         })
         return undefined
       })
@@ -2579,6 +1597,65 @@ export default function Layout(props: ParentProps) {
     layout.mobileSidebar.hide()
   }
 
+  const workspaceSidebarCtx: WorkspaceSidebarContext = {
+    currentDir,
+    sidebarExpanded,
+    sidebarHovering,
+    nav: () => state.nav,
+    hoverSession: () => state.hoverSession,
+    setHoverSession,
+    clearHoverProjectSoon,
+    prefetchSession,
+    archiveSession,
+    workspaceName,
+    renameWorkspace,
+    editorOpen,
+    openEditor,
+    closeEditor,
+    setEditor,
+    InlineEditor,
+    isBusy,
+    workspaceExpanded: (directory, local) => workspaceOpenState(store.workspaceExpanded, directory, local),
+    setWorkspaceExpanded: (directory, value) => setStore("workspaceExpanded", directory, value),
+    showResetWorkspaceDialog: (root, directory) =>
+      dialog.show(() => <DialogResetWorkspace root={root} directory={directory} />),
+    showDeleteWorkspaceDialog: (root, directory) =>
+      dialog.show(() => <DialogDeleteWorkspace root={root} directory={directory} />),
+    setScrollContainerRef: (el, mobile) => {
+      if (!mobile) scrollContainerRef = el
+    },
+  }
+
+  const projectSidebarCtx: ProjectSidebarContext = {
+    currentDir,
+    sidebarOpened: () => layout.sidebar.opened(),
+    sidebarHovering,
+    hoverProject: () => state.hoverProject,
+    nav: () => state.nav,
+    onProjectMouseEnter: (worktree, event) => aim.enter(worktree, event),
+    onProjectMouseLeave: (worktree) => aim.leave(worktree),
+    onProjectFocus: (worktree) => aim.activate(worktree),
+    navigateToProject,
+    openSidebar: () => layout.sidebar.open(),
+    closeProject,
+    showEditProjectDialog,
+    toggleProjectWorkspaces,
+    workspacesEnabled: (project) => project.vcs === "git" && layout.sidebar.workspaces(project.worktree)(),
+    workspaceIds,
+    workspaceLabel,
+    sessionProps: {
+      sidebarExpanded,
+      sidebarHovering,
+      nav: () => state.nav,
+      hoverSession: () => state.hoverSession,
+      setHoverSession,
+      clearHoverProjectSoon,
+      prefetchSession,
+      archiveSession,
+    },
+    setHoverSession,
+  }
+
   const SidebarPanel = (panelProps: { project: LocalProject | undefined; mobile?: boolean }) => {
     const projectName = createMemo(() => {
       const project = panelProps.project
@@ -2649,22 +1726,14 @@ export default function Layout(props: ParentProps) {
                     />
                     <DropdownMenu.Portal mount={!panelProps.mobile ? state.nav : undefined}>
                       <DropdownMenu.Content class="mt-1">
-                        <DropdownMenu.Item onSelect={() => dialog.show(() => <DialogEditProject project={p()} />)}>
+                        <DropdownMenu.Item onSelect={() => showEditProjectDialog(p())}>
                           <DropdownMenu.ItemLabel>{language.t("common.edit")}</DropdownMenu.ItemLabel>
                         </DropdownMenu.Item>
                         <DropdownMenu.Item
                           data-action="project-workspaces-toggle"
                           data-project={base64Encode(p().worktree)}
                           disabled={p().vcs !== "git" && !layout.sidebar.workspaces(p().worktree)()}
-                          onSelect={() => {
-                            const enabled = layout.sidebar.workspaces(p().worktree)()
-                            if (enabled) {
-                              layout.sidebar.toggleWorkspaces(p().worktree)
-                              return
-                            }
-                            if (p().vcs !== "git") return
-                            layout.sidebar.toggleWorkspaces(p().worktree)
-                          }}
+                          onSelect={() => toggleProjectWorkspaces(p())}
                         >
                           <DropdownMenu.ItemLabel>
                             {layout.sidebar.workspaces(p().worktree)()
@@ -2715,7 +1784,7 @@ export default function Layout(props: ParentProps) {
                         </TooltipKeybind>
                       </div>
                       <div class="flex-1 min-h-0">
-                        <LocalWorkspace project={p()} mobile={panelProps.mobile} />
+                        <LocalWorkspace ctx={workspaceSidebarCtx} project={p()} mobile={panelProps.mobile} />
                       </div>
                     </>
                   }
@@ -2750,13 +1819,22 @@ export default function Layout(props: ParentProps) {
                           <SortableProvider ids={workspaces()}>
                             <For each={workspaces()}>
                               {(directory) => (
-                                <SortableWorkspace directory={directory} project={p()} mobile={panelProps.mobile} />
+                                <SortableWorkspace
+                                  ctx={workspaceSidebarCtx}
+                                  directory={directory}
+                                  project={p()}
+                                  mobile={panelProps.mobile}
+                                />
                               )}
                             </For>
                           </SortableProvider>
                         </div>
                         <DragOverlay>
-                          <WorkspaceDragOverlay />
+                          <WorkspaceDragOverlay
+                            sidebarProject={sidebarProject}
+                            activeWorkspace={() => store.activeWorkspace}
+                            workspaceLabel={workspaceLabel}
+                          />
                         </DragOverlay>
                       </DragDropProvider>
                     </div>
@@ -2793,85 +1871,6 @@ export default function Layout(props: ParentProps) {
     )
   }
 
-  const SidebarContent = (sidebarProps: { mobile?: boolean }) => {
-    const expanded = () => sidebarProps.mobile || layout.sidebar.opened()
-
-    return (
-      <div class="flex h-full w-full overflow-hidden">
-        <div class="w-16 shrink-0 bg-background-base flex flex-col items-center overflow-hidden" onMouseMove={aim.move}>
-          <div class="flex-1 min-h-0 w-full">
-            <DragDropProvider
-              onDragStart={handleDragStart}
-              onDragEnd={handleDragEnd}
-              onDragOver={handleDragOver}
-              collisionDetector={closestCenter}
-            >
-              <DragDropSensors />
-              <ConstrainDragXAxis />
-              <div class="h-full w-full flex flex-col items-center gap-3 px-3 py-2 overflow-y-auto no-scrollbar">
-                <SortableProvider ids={layout.projects.list().map((p) => p.worktree)}>
-                  <For each={layout.projects.list()}>
-                    {(project) => <SortableProject project={project} mobile={sidebarProps.mobile} />}
-                  </For>
-                </SortableProvider>
-                <Tooltip
-                  placement={sidebarProps.mobile ? "bottom" : "right"}
-                  value={
-                    <div class="flex items-center gap-2">
-                      <span>{language.t("command.project.open")}</span>
-                      <Show when={!sidebarProps.mobile}>
-                        <span class="text-icon-base text-12-medium">{command.keybind("project.open")}</span>
-                      </Show>
-                    </div>
-                  }
-                >
-                  <IconButton
-                    icon="plus"
-                    variant="ghost"
-                    size="large"
-                    onClick={chooseProject}
-                    aria-label={language.t("command.project.open")}
-                  />
-                </Tooltip>
-              </div>
-              <DragOverlay>
-                <ProjectDragOverlay />
-              </DragOverlay>
-            </DragDropProvider>
-          </div>
-          <div class="shrink-0 w-full pt-3 pb-3 flex flex-col items-center gap-2">
-            <TooltipKeybind
-              placement={sidebarProps.mobile ? "bottom" : "right"}
-              title={language.t("sidebar.settings")}
-              keybind={command.keybind("settings.open")}
-            >
-              <IconButton
-                icon="settings-gear"
-                variant="ghost"
-                size="large"
-                onClick={openSettings}
-                aria-label={language.t("sidebar.settings")}
-              />
-            </TooltipKeybind>
-            <Tooltip placement={sidebarProps.mobile ? "bottom" : "right"} value={language.t("sidebar.help")}>
-              <IconButton
-                icon="help"
-                variant="ghost"
-                size="large"
-                onClick={() => platform.openLink("https://opencode.ai/desktop-feedback")}
-                aria-label={language.t("sidebar.help")}
-              />
-            </Tooltip>
-          </div>
-        </div>
-
-        <Show when={expanded()}>
-          <SidebarPanel project={currentProject()} mobile={sidebarProps.mobile} />
-        </Show>
-      </div>
-    )
-  }
-
   return (
     <div class="relative bg-background-base flex-1 min-h-0 flex flex-col select-none [&_input]:select-text [&_textarea]:select-text [&_[contenteditable]]:select-text">
       <Titlebar />
@@ -2905,7 +1904,27 @@ export default function Layout(props: ParentProps) {
           }}
         >
           <div class="@container w-full h-full contain-strict">
-            <SidebarContent />
+            <SidebarContent
+              opened={() => layout.sidebar.opened()}
+              aimMove={aim.move}
+              projects={() => layout.projects.list()}
+              renderProject={(project) => <SortableProject ctx={projectSidebarCtx} project={project} />}
+              handleDragStart={handleDragStart}
+              handleDragEnd={handleDragEnd}
+              handleDragOver={handleDragOver}
+              openProjectLabel={language.t("command.project.open")}
+              openProjectKeybind={() => command.keybind("project.open")}
+              onOpenProject={chooseProject}
+              renderProjectOverlay={() => (
+                <ProjectDragOverlay projects={() => layout.projects.list()} activeProject={() => store.activeProject} />
+              )}
+              settingsLabel={() => language.t("sidebar.settings")}
+              settingsKeybind={() => command.keybind("settings.open")}
+              onOpenSettings={openSettings}
+              helpLabel={() => language.t("sidebar.help")}
+              onOpenHelp={() => platform.openLink("https://opencode.ai/desktop-feedback")}
+              renderPanel={() => <SidebarPanel project={currentProject()} />}
+            />
           </div>
           <Show when={!layout.sidebar.opened() ? hoverProjectData() : undefined} keyed>
             {(project) => (
@@ -2947,7 +1966,28 @@ export default function Layout(props: ParentProps) {
             }}
             onClick={(e) => e.stopPropagation()}
           >
-            <SidebarContent mobile />
+            <SidebarContent
+              mobile
+              opened={() => layout.sidebar.opened()}
+              aimMove={aim.move}
+              projects={() => layout.projects.list()}
+              renderProject={(project) => <SortableProject ctx={projectSidebarCtx} project={project} mobile />}
+              handleDragStart={handleDragStart}
+              handleDragEnd={handleDragEnd}
+              handleDragOver={handleDragOver}
+              openProjectLabel={language.t("command.project.open")}
+              openProjectKeybind={() => command.keybind("project.open")}
+              onOpenProject={chooseProject}
+              renderProjectOverlay={() => (
+                <ProjectDragOverlay projects={() => layout.projects.list()} activeProject={() => store.activeProject} />
+              )}
+              settingsLabel={() => language.t("sidebar.settings")}
+              settingsKeybind={() => command.keybind("settings.open")}
+              onOpenSettings={openSettings}
+              helpLabel={() => language.t("sidebar.help")}
+              onOpenHelp={() => platform.openLink("https://opencode.ai/desktop-feedback")}
+              renderPanel={() => <SidebarPanel project={currentProject()} mobile />}
+            />
           </nav>
         </div>
 
diff --git a/packages/app/src/pages/layout/deep-links.ts b/packages/app/src/pages/layout/deep-links.ts
new file mode 100644
index 000000000..772e6ece6
--- /dev/null
+++ b/packages/app/src/pages/layout/deep-links.ts
@@ -0,0 +1,26 @@
+export const deepLinkEvent = "opencode:deep-link"
+
+export const parseDeepLink = (input: string) => {
+  if (!input.startsWith("opencode://")) return
+  const url = new URL(input)
+  if (url.hostname !== "open-project") return
+  const directory = url.searchParams.get("directory")
+  if (!directory) return
+  return directory
+}
+
+export const collectOpenProjectDeepLinks = (urls: string[]) =>
+  urls.map(parseDeepLink).filter((directory): directory is string => !!directory)
+
+type OpenCodeWindow = Window & {
+  __OPENCODE__?: {
+    deepLinks?: string[]
+  }
+}
+
+export const drainPendingDeepLinks = (target: OpenCodeWindow) => {
+  const pending = target.__OPENCODE__?.deepLinks ?? []
+  if (pending.length === 0) return []
+  if (target.__OPENCODE__) target.__OPENCODE__.deepLinks = []
+  return pending
+}
diff --git a/packages/app/src/pages/layout/helpers.test.ts b/packages/app/src/pages/layout/helpers.test.ts
new file mode 100644
index 000000000..8a8ea78c7
--- /dev/null
+++ b/packages/app/src/pages/layout/helpers.test.ts
@@ -0,0 +1,63 @@
+import { describe, expect, test } from "bun:test"
+import { collectOpenProjectDeepLinks, drainPendingDeepLinks, parseDeepLink } from "./deep-links"
+import { displayName, errorMessage, getDraggableId, syncWorkspaceOrder, workspaceKey } from "./helpers"
+
+describe("layout deep links", () => {
+  test("parses open-project deep links", () => {
+    expect(parseDeepLink("opencode://open-project?directory=/tmp/demo")).toBe("/tmp/demo")
+  })
+
+  test("ignores non-project deep links", () => {
+    expect(parseDeepLink("opencode://other?directory=/tmp/demo")).toBeUndefined()
+    expect(parseDeepLink("https://example.com")).toBeUndefined()
+  })
+
+  test("collects only valid open-project directories", () => {
+    const result = collectOpenProjectDeepLinks([
+      "opencode://open-project?directory=/a",
+      "opencode://other?directory=/b",
+      "opencode://open-project?directory=/c",
+    ])
+    expect(result).toEqual(["/a", "/c"])
+  })
+
+  test("drains global deep links once", () => {
+    const target = {
+      __OPENCODE__: {
+        deepLinks: ["opencode://open-project?directory=/a"],
+      },
+    } as unknown as Window & { __OPENCODE__?: { deepLinks?: string[] } }
+
+    expect(drainPendingDeepLinks(target)).toEqual(["opencode://open-project?directory=/a"])
+    expect(drainPendingDeepLinks(target)).toEqual([])
+  })
+})
+
+describe("layout workspace helpers", () => {
+  test("normalizes trailing slash in workspace key", () => {
+    expect(workspaceKey("/tmp/demo///")).toBe("/tmp/demo")
+    expect(workspaceKey("C:\\tmp\\demo\\\\")).toBe("C:\\tmp\\demo")
+  })
+
+  test("keeps local first while preserving known order", () => {
+    const result = syncWorkspaceOrder("/root", ["/root", "/b", "/c"], ["/root", "/c", "/a", "/b"])
+    expect(result).toEqual(["/root", "/c", "/b"])
+  })
+
+  test("extracts draggable id safely", () => {
+    expect(getDraggableId({ draggable: { id: "x" } })).toBe("x")
+    expect(getDraggableId({ draggable: { id: 42 } })).toBeUndefined()
+    expect(getDraggableId(null)).toBeUndefined()
+  })
+
+  test("formats fallback project display name", () => {
+    expect(displayName({ worktree: "/tmp/app" })).toBe("app")
+    expect(displayName({ worktree: "/tmp/app", name: "My App" })).toBe("My App")
+  })
+
+  test("extracts api error message and fallback", () => {
+    expect(errorMessage({ data: { message: "boom" } }, "fallback")).toBe("boom")
+    expect(errorMessage(new Error("broken"), "fallback")).toBe("broken")
+    expect(errorMessage("unknown", "fallback")).toBe("fallback")
+  })
+})
diff --git a/packages/app/src/pages/layout/helpers.ts b/packages/app/src/pages/layout/helpers.ts
new file mode 100644
index 000000000..4d144f34e
--- /dev/null
+++ b/packages/app/src/pages/layout/helpers.ts
@@ -0,0 +1,65 @@
+import { getFilename } from "@opencode-ai/util/path"
+import { type Session } from "@opencode-ai/sdk/v2/client"
+
+export const workspaceKey = (directory: string) => directory.replace(/[\\/]+$/, "")
+
+export function sortSessions(now: number) {
+  const oneMinuteAgo = now - 60 * 1000
+  return (a: Session, b: Session) => {
+    const aUpdated = a.time.updated ?? a.time.created
+    const bUpdated = b.time.updated ?? b.time.created
+    const aRecent = aUpdated > oneMinuteAgo
+    const bRecent = bUpdated > oneMinuteAgo
+    if (aRecent && bRecent) return a.id < b.id ? -1 : a.id > b.id ? 1 : 0
+    if (aRecent && !bRecent) return -1
+    if (!aRecent && bRecent) return 1
+    return bUpdated - aUpdated
+  }
+}
+
+export const isRootVisibleSession = (session: Session, directory: string) =>
+  workspaceKey(session.directory) === workspaceKey(directory) && !session.parentID && !session.time?.archived
+
+export const sortedRootSessions = (store: { session: Session[]; path: { directory: string } }, now: number) =>
+  store.session.filter((session) => isRootVisibleSession(session, store.path.directory)).toSorted(sortSessions(now))
+
+export const childMapByParent = (sessions: Session[]) => {
+  const map = new Map<string, string[]>()
+  for (const session of sessions) {
+    if (!session.parentID) continue
+    const existing = map.get(session.parentID)
+    if (existing) {
+      existing.push(session.id)
+      continue
+    }
+    map.set(session.parentID, [session.id])
+  }
+  return map
+}
+
+export function getDraggableId(event: unknown): string | undefined {
+  if (typeof event !== "object" || event === null) return undefined
+  if (!("draggable" in event)) return undefined
+  const draggable = (event as { draggable?: { id?: unknown } }).draggable
+  if (!draggable) return undefined
+  return typeof draggable.id === "string" ? draggable.id : undefined
+}
+
+export const displayName = (project: { name?: string; worktree: string }) =>
+  project.name || getFilename(project.worktree)
+
+export const errorMessage = (err: unknown, fallback: string) => {
+  if (err && typeof err === "object" && "data" in err) {
+    const data = (err as { data?: { message?: string } }).data
+    if (data?.message) return data.message
+  }
+  if (err instanceof Error) return err.message
+  return fallback
+}
+
+export const syncWorkspaceOrder = (local: string, dirs: string[], existing?: string[]) => {
+  if (!existing) return dirs
+  const keep = existing.filter((d) => d !== local && dirs.includes(d))
+  const missing = dirs.filter((d) => d !== local && !existing.includes(d))
+  return [local, ...missing, ...keep]
+}
diff --git a/packages/app/src/pages/layout/inline-editor.tsx b/packages/app/src/pages/layout/inline-editor.tsx
new file mode 100644
index 000000000..0bbfe244c
--- /dev/null
+++ b/packages/app/src/pages/layout/inline-editor.tsx
@@ -0,0 +1,113 @@
+import { createStore } from "solid-js/store"
+import { Show, type Accessor } from "solid-js"
+import { InlineInput } from "@opencode-ai/ui/inline-input"
+
+export function createInlineEditorController() {
+  const [editor, setEditor] = createStore({
+    active: "" as string,
+    value: "",
+  })
+
+  const editorOpen = (id: string) => editor.active === id
+  const editorValue = () => editor.value
+  const openEditor = (id: string, value: string) => {
+    if (!id) return
+    setEditor({ active: id, value })
+  }
+  const closeEditor = () => setEditor({ active: "", value: "" })
+
+  const saveEditor = (callback: (next: string) => void) => {
+    const next = editor.value.trim()
+    if (!next) {
+      closeEditor()
+      return
+    }
+    closeEditor()
+    callback(next)
+  }
+
+  const editorKeyDown = (event: KeyboardEvent, callback: (next: string) => void) => {
+    if (event.key === "Enter") {
+      event.preventDefault()
+      saveEditor(callback)
+      return
+    }
+    if (event.key !== "Escape") return
+    event.preventDefault()
+    closeEditor()
+  }
+
+  const InlineEditor = (props: {
+    id: string
+    value: Accessor<string>
+    onSave: (next: string) => void
+    class?: string
+    displayClass?: string
+    editing?: boolean
+    stopPropagation?: boolean
+    openOnDblClick?: boolean
+  }) => {
+    const isEditing = () => props.editing ?? editorOpen(props.id)
+    const stopEvents = () => props.stopPropagation ?? false
+    const allowDblClick = () => props.openOnDblClick ?? true
+    const stopPropagation = (event: Event) => {
+      if (!stopEvents()) return
+      event.stopPropagation()
+    }
+    const handleDblClick = (event: MouseEvent) => {
+      if (!allowDblClick()) return
+      stopPropagation(event)
+      openEditor(props.id, props.value())
+    }
+
+    return (
+      <Show
+        when={isEditing()}
+        fallback={
+          <span
+            class={props.displayClass ?? props.class}
+            onDblClick={handleDblClick}
+            onPointerDown={stopPropagation}
+            onMouseDown={stopPropagation}
+            onClick={stopPropagation}
+            onTouchStart={stopPropagation}
+          >
+            {props.value()}
+          </span>
+        }
+      >
+        <InlineInput
+          ref={(el) => {
+            requestAnimationFrame(() => el.focus())
+          }}
+          value={editorValue()}
+          class={props.class}
+          onInput={(event) => setEditor("value", event.currentTarget.value)}
+          onKeyDown={(event) => {
+            event.stopPropagation()
+            editorKeyDown(event, props.onSave)
+          }}
+          onBlur={closeEditor}
+          onPointerDown={stopPropagation}
+          onClick={stopPropagation}
+          onDblClick={stopPropagation}
+          onMouseDown={stopPropagation}
+          onMouseUp={stopPropagation}
+          onTouchStart={stopPropagation}
+        />
+      </Show>
+    )
+  }
+
+  return {
+    editor,
+    editorOpen,
+    editorValue,
+    openEditor,
+    closeEditor,
+    saveEditor,
+    editorKeyDown,
+    setEditor,
+    InlineEditor,
+  }
+}
diff --git a/packages/app/src/pages/layout/sidebar-items.tsx b/packages/app/src/pages/layout/sidebar-items.tsx
new file mode 100644
index 000000000..facfbddc7
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-items.tsx
@@ -0,0 +1,330 @@
+import { A, useNavigate, useParams } from "@solidjs/router"
+import { useGlobalSync } from "@/context/global-sync"
+import { useLanguage } from "@/context/language"
+import { useLayout, type LocalProject, getAvatarColors } from "@/context/layout"
+import { useNotification } from "@/context/notification"
+import { base64Encode } from "@opencode-ai/util/encode"
+import { Avatar } from "@opencode-ai/ui/avatar"
+import { DiffChanges } from "@opencode-ai/ui/diff-changes"
+import { HoverCard } from "@opencode-ai/ui/hover-card"
+import { Icon } from "@opencode-ai/ui/icon"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { MessageNav } from "@opencode-ai/ui/message-nav"
+import { Spinner } from "@opencode-ai/ui/spinner"
+import { Tooltip } from "@opencode-ai/ui/tooltip"
+import { getFilename } from "@opencode-ai/util/path"
+import { type Message, type Session, type TextPart } from "@opencode-ai/sdk/v2/client"
+import { For, Match, Show, Switch, createMemo, onCleanup, type Accessor, type JSX } from "solid-js"
+import { agentColor } from "@/utils/agent"
+
+const OPENCODE_PROJECT_ID = "4b0ea68d7af9a6031a7ffda7ad66e0cb83315750"
+
+export const ProjectIcon = (props: { project: LocalProject; class?: string; notify?: boolean }): JSX.Element => {
+  const notification = useNotification()
+  const unseenCount = createMemo(() => notification.project.unseenCount(props.project.worktree))
+  const hasError = createMemo(() => notification.project.unseenHasError(props.project.worktree))
+  const name = createMemo(() => props.project.name || getFilename(props.project.worktree))
+  return (
+    <div class={`relative size-8 shrink-0 rounded ${props.class ?? ""}`}>
+      <div class="size-full rounded overflow-clip">
+        <Avatar
+          fallback={name()}
+          src={
+            props.project.id === OPENCODE_PROJECT_ID ? "https://opencode.ai/favicon.svg" : props.project.icon?.override
+          }
+          {...getAvatarColors(props.project.icon?.color)}
+          class="size-full rounded"
+          classList={{ "badge-mask": unseenCount() > 0 && props.notify }}
+        />
+      </div>
+      <Show when={unseenCount() > 0 && props.notify}>
+        <div
+          classList={{
+            "absolute top-px right-px size-1.5 rounded-full z-10": true,
+            "bg-icon-critical-base": hasError(),
+            "bg-text-interactive-base": !hasError(),
+          }}
+        />
+      </Show>
+    </div>
+  )
+}
+
+export type SessionItemProps = {
+  session: Session
+  slug: string
+  mobile?: boolean
+  dense?: boolean
+  popover?: boolean
+  children: Map<string, string[]>
+  sidebarExpanded: Accessor<boolean>
+  sidebarHovering: Accessor<boolean>
+  nav: Accessor<HTMLElement | undefined>
+  hoverSession: Accessor<string | undefined>
+  setHoverSession: (id: string | undefined) => void
+  clearHoverProjectSoon: () => void
+  prefetchSession: (session: Session, priority?: "high" | "low") => void
+  archiveSession: (session: Session) => Promise<void>
+}
+
+export const SessionItem = (props: SessionItemProps): JSX.Element => {
+  const params = useParams()
+  const navigate = useNavigate()
+  const layout = useLayout()
+  const language = useLanguage()
+  const notification = useNotification()
+  const globalSync = useGlobalSync()
+  const unseenCount = createMemo(() => notification.session.unseenCount(props.session.id))
+  const hasError = createMemo(() => notification.session.unseenHasError(props.session.id))
+  const [sessionStore] = globalSync.child(props.session.directory)
+  const hasPermissions = createMemo(() => {
+    const permissions = sessionStore.permission?.[props.session.id] ?? []
+    if (permissions.length > 0) return true
+
+    for (const id of props.children.get(props.session.id) ?? []) {
+      const childPermissions = sessionStore.permission?.[id] ?? []
+      if (childPermissions.length > 0) return true
+    }
+    return false
+  })
+  const isWorking = createMemo(() => {
+    if (hasPermissions()) return false
+    const status = sessionStore.session_status[props.session.id]
+    return status?.type === "busy" || status?.type === "retry"
+  })
+
+  const tint = createMemo(() => {
+    const messages = sessionStore.message[props.session.id]
+    if (!messages) return undefined
+    let user: Message | undefined
+    for (let i = messages.length - 1; i >= 0; i--) {
+      const message = messages[i]
+      if (message.role !== "user") continue
+      user = message
+      break
+    }
+    if (!user?.agent) return undefined
+
+    const agent = sessionStore.agent.find((a) => a.name === user.agent)
+    return agentColor(user.agent, agent?.color)
+  })
+
+  const hoverMessages = createMemo(() =>
+    sessionStore.message[props.session.id]?.filter((message) => message.role === "user"),
+  )
+  const hoverReady = createMemo(() => sessionStore.message[props.session.id] !== undefined)
+  const hoverAllowed = createMemo(() => !props.mobile && props.sidebarExpanded())
+  const hoverEnabled = createMemo(() => (props.popover ?? true) && hoverAllowed())
+  const isActive = createMemo(() => props.session.id === params.id)
+
+  const hoverPrefetch = { current: undefined as ReturnType<typeof setTimeout> | undefined }
+  const cancelHoverPrefetch = () => {
+    if (hoverPrefetch.current === undefined) return
+    clearTimeout(hoverPrefetch.current)
+    hoverPrefetch.current = undefined
+  }
+  const scheduleHoverPrefetch = () => {
+    if (hoverPrefetch.current !== undefined) return
+    hoverPrefetch.current = setTimeout(() => {
+      hoverPrefetch.current = undefined
+      props.prefetchSession(props.session)
+    }, 200)
+  }
+
+  onCleanup(cancelHoverPrefetch)
+
+  const messageLabel = (message: Message) => {
+    const parts = sessionStore.part[message.id] ?? []
+    const text = parts.find((part): part is TextPart => part?.type === "text" && !part.synthetic && !part.ignored)
+    return text?.text
+  }
+
+  const item = (
+    <A
+      href={`${props.slug}/session/${props.session.id}`}
+      class={`flex items-center justify-between gap-3 min-w-0 text-left w-full focus:outline-none transition-[padding] ${props.mobile ? "pr-7" : ""} group-hover/session:pr-7 group-focus-within/session:pr-7 group-active/session:pr-7 ${props.dense ? "py-0.5" : "py-1"}`}
+      onPointerEnter={scheduleHoverPrefetch}
+      onPointerLeave={cancelHoverPrefetch}
+      onMouseEnter={scheduleHoverPrefetch}
+      onMouseLeave={cancelHoverPrefetch}
+      onFocus={() => props.prefetchSession(props.session, "high")}
+      onClick={() => {
+        props.setHoverSession(undefined)
+        if (layout.sidebar.opened()) return
+        props.clearHoverProjectSoon()
+      }}
+    >
+      <div class="flex items-center gap-1 w-full">
+        <div
+          class="shrink-0 size-6 flex items-center justify-center"
+          style={{ color: tint() ?? "var(--icon-interactive-base)" }}
+        >
+          <Switch fallback={<Icon name="dash" size="small" class="text-icon-weak" />}>
+            <Match when={isWorking()}>
+              <Spinner class="size-[15px]" />
+            </Match>
+            <Match when={hasPermissions()}>
+              <div class="size-1.5 rounded-full bg-surface-warning-strong" />
+            </Match>
+            <Match when={hasError()}>
+              <div class="size-1.5 rounded-full bg-text-diff-delete-base" />
+            </Match>
+            <Match when={unseenCount() > 0}>
+              <div class="size-1.5 rounded-full bg-text-interactive-base" />
+            </Match>
+          </Switch>
+        </div>
+        <span class="text-14-regular text-text-strong grow-1 min-w-0 overflow-hidden text-ellipsis truncate">
+          {props.session.title}
+        </span>
+        <Show when={props.session.summary}>
+          {(summary) => (
+            <div class="group-hover/session:hidden group-active/session:hidden group-focus-within/session:hidden">
+              <DiffChanges changes={summary()} />
+            </div>
+          )}
+        </Show>
+      </div>
+    </A>
+  )
+
+  return (
+    <div
+      data-session-id={props.session.id}
+      class="group/session relative w-full rounded-md cursor-default transition-colors pl-2 pr-3
+             hover:bg-surface-raised-base-hover [&:has(:focus-visible)]:bg-surface-raised-base-hover has-[[data-expanded]]:bg-surface-raised-base-hover has-[.active]:bg-surface-base-active"
+    >
+      <Show
+        when={hoverEnabled()}
+        fallback={
+          <Tooltip placement={props.mobile ? "bottom" : "right"} value={props.session.title} gutter={10}>
+            {item}
+          </Tooltip>
+        }
+      >
+        <HoverCard
+          openDelay={1000}
+          closeDelay={props.sidebarHovering() ? 600 : 0}
+          placement="right-start"
+          gutter={16}
+          shift={-2}
+          trigger={item}
+          mount={!props.mobile ? props.nav() : undefined}
+          open={props.hoverSession() === props.session.id}
+          onOpenChange={(open) => props.setHoverSession(open ? props.session.id : undefined)}
+        >
+          <Show
+            when={hoverReady()}
+            fallback={<div class="text-12-regular text-text-weak">{language.t("session.messages.loading")}</div>}
+          >
+            <div class="overflow-y-auto max-h-72 h-full">
+              <MessageNav
+                messages={hoverMessages() ?? []}
+                current={undefined}
+                getLabel={messageLabel}
+                onMessageSelect={(message) => {
+                  if (!isActive()) {
+                    layout.pendingMessage.set(
+                      `${base64Encode(props.session.directory)}/${props.session.id}`,
+                      message.id,
+                    )
+                    navigate(`${props.slug}/session/${props.session.id}`)
+                    return
+                  }
+                  window.history.replaceState(null, "", `#message-${message.id}`)
+                  window.dispatchEvent(new HashChangeEvent("hashchange"))
+                }}
+                size="normal"
+                class="w-60"
+              />
+            </div>
+          </Show>
+        </HoverCard>
+      </Show>
+      <div
+        class={`absolute ${props.dense ? "top-0.5 right-0.5" : "top-1 right-1"} flex items-center gap-0.5 transition-opacity`}
+        classList={{
+          "opacity-100 pointer-events-auto": !!props.mobile,
+          "opacity-0 pointer-events-none": !props.mobile,
+          "group-hover/session:opacity-100 group-hover/session:pointer-events-auto": true,
+          "group-focus-within/session:opacity-100 group-focus-within/session:pointer-events-auto": true,
+        }}
+      >
+        <Tooltip value={language.t("common.archive")} placement="top">
+          <IconButton
+            icon="archive"
+            variant="ghost"
+            class="size-6 rounded-md"
+            aria-label={language.t("common.archive")}
+            onClick={(event) => {
+              event.preventDefault()
+              event.stopPropagation()
+              void props.archiveSession(props.session)
+            }}
+          />
+        </Tooltip>
+      </div>
+    </div>
+  )
+}
+
+export const NewSessionItem = (props: {
+  slug: string
+  mobile?: boolean
+  dense?: boolean
+  sidebarExpanded: Accessor<boolean>
+  clearHoverProjectSoon: () => void
+  setHoverSession: (id: string | undefined) => void
+}): JSX.Element => {
+  const layout = useLayout()
+  const language = useLanguage()
+  const label = language.t("command.session.new")
+  const tooltip = () => props.mobile || !props.sidebarExpanded()
+  const item = (
+    <A
+      href={`${props.slug}/session`}
+      end
+      class={`flex items-center justify-between gap-3 min-w-0 text-left w-full focus:outline-none ${props.dense ? "py-0.5" : "py-1"}`}
+      onClick={() => {
+        props.setHoverSession(undefined)
+        if (layout.sidebar.opened()) return
+        props.clearHoverProjectSoon()
+      }}
+    >
+      <div class="flex items-center gap-1 w-full">
+        <div class="shrink-0 size-6 flex items-center justify-center">
+          <Icon name="plus-small" size="small" class="text-icon-weak" />
+        </div>
+        <span class="text-14-regular text-text-strong grow-1 min-w-0 overflow-hidden text-ellipsis truncate">
+          {label}
+        </span>
+      </div>
+    </A>
+  )
+
+  return (
+    <div class="group/session relative w-full rounded-md cursor-default transition-colors pl-2 pr-3 hover:bg-surface-raised-base-hover [&:has(:focus-visible)]:bg-surface-raised-base-hover has-[.active]:bg-surface-base-active">
+      <Show
+        when={!tooltip()}
+        fallback={
+          <Tooltip placement={props.mobile ? "bottom" : "right"} value={label} gutter={10}>
+            {item}
+          </Tooltip>
+        }
+      >
+        {item}
+      </Show>
+    </div>
+  )
+}
+
+export const SessionSkeleton = (props: { count?: number }): JSX.Element => {
+  const items = Array.from({ length: props.count ?? 4 }, (_, index) => index)
+  return (
+    <div class="flex flex-col gap-1">
+      <For each={items}>
+        {() => <div class="h-8 w-full rounded-md bg-surface-raised-base opacity-60 animate-pulse" />}
+      </For>
+    </div>
+  )
+}
diff --git a/packages/app/src/pages/layout/sidebar-project-helpers.test.ts b/packages/app/src/pages/layout/sidebar-project-helpers.test.ts
new file mode 100644
index 000000000..75958d49e
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-project-helpers.test.ts
@@ -0,0 +1,63 @@
+import { describe, expect, test } from "bun:test"
+import { projectSelected, projectTileActive } from "./sidebar-project-helpers"
+
+describe("projectSelected", () => {
+  test("matches direct worktree", () => {
+    expect(projectSelected("/tmp/root", "/tmp/root")).toBe(true)
+  })
+
+  test("matches sandbox worktree", () => {
+    expect(projectSelected("/tmp/branch", "/tmp/root", ["/tmp/branch"])).toBe(true)
+    expect(projectSelected("/tmp/other", "/tmp/root", ["/tmp/branch"])).toBe(false)
+  })
+})
+
+describe("projectTileActive", () => {
+  test("menu state always wins", () => {
+    expect(
+      projectTileActive({
+        menu: true,
+        preview: false,
+        open: false,
+        overlay: false,
+        worktree: "/tmp/root",
+      }),
+    ).toBe(true)
+  })
+
+  test("preview mode uses open state", () => {
+    expect(
+      projectTileActive({
+        menu: false,
+        preview: true,
+        open: true,
+        overlay: true,
+        hoverProject: "/tmp/other",
+        worktree: "/tmp/root",
+      }),
+    ).toBe(true)
+  })
+
+  test("overlay mode uses hovered project", () => {
+    expect(
+      projectTileActive({
+        menu: false,
+        preview: false,
+        open: false,
+        overlay: true,
+        hoverProject: "/tmp/root",
+        worktree: "/tmp/root",
+      }),
+    ).toBe(true)
+    expect(
+      projectTileActive({
+        menu: false,
+        preview: false,
+        open: false,
+        overlay: true,
+        hoverProject: "/tmp/other",
+        worktree: "/tmp/root",
+      }),
+    ).toBe(false)
+  })
+})
diff --git a/packages/app/src/pages/layout/sidebar-project-helpers.ts b/packages/app/src/pages/layout/sidebar-project-helpers.ts
new file mode 100644
index 000000000..06d38a3cd
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-project-helpers.ts
@@ -0,0 +1,11 @@
+export const projectSelected = (currentDir: string, worktree: string, sandboxes?: string[]) =>
+  worktree === currentDir || sandboxes?.includes(currentDir) === true
+
+export const projectTileActive = (args: {
+  menu: boolean
+  preview: boolean
+  open: boolean
+  overlay: boolean
+  hoverProject?: string
+  worktree: string
+}) => args.menu || (args.preview ? args.open : args.overlay && args.hoverProject === args.worktree)
diff --git a/packages/app/src/pages/layout/sidebar-project.tsx b/packages/app/src/pages/layout/sidebar-project.tsx
new file mode 100644
index 000000000..c91dc987d
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-project.tsx
@@ -0,0 +1,283 @@
+import { createEffect, createMemo, createSignal, For, Show, type Accessor, type JSX } from "solid-js"
+import { base64Encode } from "@opencode-ai/util/encode"
+import { Button } from "@opencode-ai/ui/button"
+import { ContextMenu } from "@opencode-ai/ui/context-menu"
+import { HoverCard } from "@opencode-ai/ui/hover-card"
+import { Icon } from "@opencode-ai/ui/icon"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { Tooltip } from "@opencode-ai/ui/tooltip"
+import { createSortable } from "@thisbeyond/solid-dnd"
+import { type LocalProject } from "@/context/layout"
+import { useGlobalSync } from "@/context/global-sync"
+import { useLanguage } from "@/context/language"
+import { ProjectIcon, SessionItem, type SessionItemProps } from "./sidebar-items"
+import { childMapByParent, displayName, sortedRootSessions } from "./helpers"
+import { projectSelected, projectTileActive } from "./sidebar-project-helpers"
+
+export type ProjectSidebarContext = {
+  currentDir: Accessor<string>
+  sidebarOpened: Accessor<boolean>
+  sidebarHovering: Accessor<boolean>
+  hoverProject: Accessor<string | undefined>
+  nav: Accessor<HTMLElement | undefined>
+  onProjectMouseEnter: (worktree: string, event: MouseEvent) => void
+  onProjectMouseLeave: (worktree: string) => void
+  onProjectFocus: (worktree: string) => void
+  navigateToProject: (directory: string) => void
+  openSidebar: () => void
+  closeProject: (directory: string) => void
+  showEditProjectDialog: (project: LocalProject) => void
+  toggleProjectWorkspaces: (project: LocalProject) => void
+  workspacesEnabled: (project: LocalProject) => boolean
+  workspaceIds: (project: LocalProject) => string[]
+  workspaceLabel: (directory: string, branch?: string, projectId?: string) => string
+  sessionProps: Omit<SessionItemProps, "session" | "slug" | "children" | "mobile" | "dense" | "popover">
+  setHoverSession: (id: string | undefined) => void
+}
+
+export const ProjectDragOverlay = (props: {
+  projects: Accessor<LocalProject[]>
+  activeProject: Accessor<string | undefined>
+}): JSX.Element => {
+  const project = createMemo(() => props.projects().find((p) => p.worktree === props.activeProject()))
+  return (
+    <Show when={project()}>
+      {(p) => (
+        <div class="bg-background-base rounded-xl p-1">
+          <ProjectIcon project={p()} />
+        </div>
+      )}
+    </Show>
+  )
+}
+
+export const SortableProject = (props: {
+  project: LocalProject
+  mobile?: boolean
+  ctx: ProjectSidebarContext
+}): JSX.Element => {
+  const globalSync = useGlobalSync()
+  const language = useLanguage()
+  const sortable = createSortable(props.project.worktree)
+  const selected = createMemo(() =>
+    projectSelected(props.ctx.currentDir(), props.project.worktree, props.project.sandboxes),
+  )
+  const workspaces = createMemo(() => props.ctx.workspaceIds(props.project).slice(0, 2))
+  const workspaceEnabled = createMemo(() => props.ctx.workspacesEnabled(props.project))
+  const [open, setOpen] = createSignal(false)
+  const [menu, setMenu] = createSignal(false)
+
+  const preview = createMemo(() => !props.mobile && props.ctx.sidebarOpened())
+  const overlay = createMemo(() => !props.mobile && !props.ctx.sidebarOpened())
+  const active = createMemo(() =>
+    projectTileActive({
+      menu: menu(),
+      preview: preview(),
+      open: open(),
+      overlay: overlay(),
+      hoverProject: props.ctx.hoverProject(),
+      worktree: props.project.worktree,
+    }),
+  )
+
+  createEffect(() => {
+    if (preview()) return
+    if (!open()) return
+    setOpen(false)
+  })
+
+  const label = (directory: string) => {
+    const [data] = globalSync.child(directory, { bootstrap: false })
+    const kind =
+      directory === props.project.worktree ? language.t("workspace.type.local") : language.t("workspace.type.sandbox")
+    const name = props.ctx.workspaceLabel(directory, data.vcs?.branch, props.project.id)
+    return `${kind} : ${name}`
+  }
+
+  const projectStore = createMemo(() => globalSync.child(props.project.worktree, { bootstrap: false })[0])
+  const projectSessions = createMemo(() => sortedRootSessions(projectStore(), Date.now()).slice(0, 2))
+  const projectChildren = createMemo(() => childMapByParent(projectStore().session))
+  const workspaceSessions = (directory: string) => {
+    const [data] = globalSync.child(directory, { bootstrap: false })
+    return sortedRootSessions(data, Date.now()).slice(0, 2)
+  }
+  const workspaceChildren = (directory: string) => {
+    const [data] = globalSync.child(directory, { bootstrap: false })
+    return childMapByParent(data.session)
+  }
+
+  const Trigger = () => (
+    <ContextMenu
+      modal={!props.ctx.sidebarHovering()}
+      onOpenChange={(value) => {
+        setMenu(value)
+        if (value) setOpen(false)
+      }}
+    >
+      <ContextMenu.Trigger
+        as="button"
+        type="button"
+        aria-label={displayName(props.project)}
+        data-action="project-switch"
+        data-project={base64Encode(props.project.worktree)}
+        classList={{
+          "flex items-center justify-center size-10 p-1 rounded-lg overflow-hidden transition-colors cursor-default": true,
+          "bg-transparent border-2 border-icon-strong-base hover:bg-surface-base-hover": selected(),
+          "bg-transparent border border-transparent hover:bg-surface-base-hover hover:border-border-weak-base":
+            !selected() && !active(),
+          "bg-surface-base-hover border border-border-weak-base": !selected() && active(),
+        }}
+        onMouseEnter={(event: MouseEvent) => {
+          if (!overlay()) return
+          props.ctx.onProjectMouseEnter(props.project.worktree, event)
+        }}
+        onMouseLeave={() => {
+          if (!overlay()) return
+          props.ctx.onProjectMouseLeave(props.project.worktree)
+        }}
+        onFocus={() => {
+          if (!overlay()) return
+          props.ctx.onProjectFocus(props.project.worktree)
+        }}
+        onClick={() => props.ctx.navigateToProject(props.project.worktree)}
+        onBlur={() => setOpen(false)}
+      >
+        <ProjectIcon project={props.project} notify />
+      </ContextMenu.Trigger>
+      <ContextMenu.Portal mount={!props.mobile ? props.ctx.nav() : undefined}>
+        <ContextMenu.Content>
+          <ContextMenu.Item onSelect={() => props.ctx.showEditProjectDialog(props.project)}>
+            <ContextMenu.ItemLabel>{language.t("common.edit")}</ContextMenu.ItemLabel>
+          </ContextMenu.Item>
+          <ContextMenu.Item
+            data-action="project-workspaces-toggle"
+            data-project={base64Encode(props.project.worktree)}
+            disabled={props.project.vcs !== "git" && !props.ctx.workspacesEnabled(props.project)}
+            onSelect={() => props.ctx.toggleProjectWorkspaces(props.project)}
+          >
+            <ContextMenu.ItemLabel>
+              {props.ctx.workspacesEnabled(props.project)
+                ? language.t("sidebar.workspaces.disable")
+                : language.t("sidebar.workspaces.enable")}
+            </ContextMenu.ItemLabel>
+          </ContextMenu.Item>
+          <ContextMenu.Separator />
+          <ContextMenu.Item
+            data-action="project-close-menu"
+            data-project={base64Encode(props.project.worktree)}
+            onSelect={() => props.ctx.closeProject(props.project.worktree)}
+          >
+            <ContextMenu.ItemLabel>{language.t("common.close")}</ContextMenu.ItemLabel>
+          </ContextMenu.Item>
+        </ContextMenu.Content>
+      </ContextMenu.Portal>
+    </ContextMenu>
+  )
+
+  return (
+    // @ts-ignore
+    <div use:sortable classList={{ "opacity-30": sortable.isActiveDraggable }}>
+      <Show when={preview()} fallback={<Trigger />}>
+        <HoverCard
+          open={open() && !menu()}
+          openDelay={0}
+          closeDelay={0}
+          placement="right-start"
+          gutter={6}
+          trigger={<Trigger />}
+          onOpenChange={(value) => {
+            if (menu()) return
+            setOpen(value)
+            if (value) props.ctx.setHoverSession(undefined)
+          }}
+        >
+          <div class="-m-3 p-2 flex flex-col w-72">
+            <div class="px-4 pt-2 pb-1 flex items-center gap-2">
+              <div class="text-14-medium text-text-strong truncate grow">{displayName(props.project)}</div>
+              <Tooltip value={language.t("common.close")} placement="top" gutter={6}>
+                <IconButton
+                  icon="circle-x"
+                  variant="ghost"
+                  class="shrink-0"
+                  data-action="project-close-hover"
+                  data-project={base64Encode(props.project.worktree)}
+                  aria-label={language.t("common.close")}
+                  onClick={(event) => {
+                    event.stopPropagation()
+                    setOpen(false)
+                    props.ctx.closeProject(props.project.worktree)
+                  }}
+                />
+              </Tooltip>
+            </div>
+            <div class="px-4 pb-2 text-12-medium text-text-weak">{language.t("sidebar.project.recentSessions")}</div>
+            <div class="px-2 pb-2 flex flex-col gap-2">
+              <Show
+                when={workspaceEnabled()}
+                fallback={
+                  <For each={projectSessions()}>
+                    {(session) => (
+                      <SessionItem
+                        {...props.ctx.sessionProps}
+                        session={session}
+                        slug={base64Encode(props.project.worktree)}
+                        dense
+                        mobile={props.mobile}
+                        popover={false}
+                        children={projectChildren()}
+                      />
+                    )}
+                  </For>
+                }
+              >
+                <For each={workspaces()}>
+                  {(directory) => {
+                    const sessions = createMemo(() => workspaceSessions(directory))
+                    const children = createMemo(() => workspaceChildren(directory))
+                    return (
+                      <div class="flex flex-col gap-1">
+                        <div class="px-2 py-0.5 flex items-center gap-1 min-w-0">
+                          <div class="shrink-0 size-6 flex items-center justify-center">
+                            <Icon name="branch" size="small" class="text-icon-base" />
+                          </div>
+                          <span class="truncate text-14-medium text-text-base">{label(directory)}</span>
+                        </div>
+                        <For each={sessions()}>
+                          {(session) => (
+                            <SessionItem
+                              {...props.ctx.sessionProps}
+                              session={session}
+                              slug={base64Encode(directory)}
+                              dense
+                              mobile={props.mobile}
+                              popover={false}
+                              children={children()}
+                            />
+                          )}
+                        </For>
+                      </div>
+                    )
+                  }}
+                </For>
+              </Show>
+            </div>
+            <div class="px-2 py-2 border-t border-border-weak-base">
+              <Button
+                variant="ghost"
+                class="flex w-full text-left justify-start text-text-base px-2 hover:bg-transparent active:bg-transparent"
+                onClick={() => {
+                  props.ctx.openSidebar()
+                  setOpen(false)
+                  if (selected()) return
+                  props.ctx.navigateToProject(props.project.worktree)
+                }}
+              >
+                {language.t("sidebar.project.viewAllSessions")}
+              </Button>
+            </div>
+          </div>
+        </HoverCard>
+      </Show>
+    </div>
+  )
+}
diff --git a/packages/app/src/pages/layout/sidebar-shell-helpers.ts b/packages/app/src/pages/layout/sidebar-shell-helpers.ts
new file mode 100644
index 000000000..93c286c15
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-shell-helpers.ts
@@ -0,0 +1 @@
+export const sidebarExpanded = (mobile: boolean | undefined, opened: boolean) => !!mobile || opened
diff --git a/packages/app/src/pages/layout/sidebar-shell.test.ts b/packages/app/src/pages/layout/sidebar-shell.test.ts
new file mode 100644
index 000000000..694025a65
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-shell.test.ts
@@ -0,0 +1,13 @@
+import { describe, expect, test } from "bun:test"
+import { sidebarExpanded } from "./sidebar-shell-helpers"
+
+describe("sidebarExpanded", () => {
+  test("expands on mobile regardless of desktop open state", () => {
+    expect(sidebarExpanded(true, false)).toBe(true)
+  })
+
+  test("follows desktop open state when not mobile", () => {
+    expect(sidebarExpanded(false, true)).toBe(true)
+    expect(sidebarExpanded(false, false)).toBe(false)
+  })
+})
diff --git a/packages/app/src/pages/layout/sidebar-shell.tsx b/packages/app/src/pages/layout/sidebar-shell.tsx
new file mode 100644
index 000000000..ce96a09d1
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-shell.tsx
@@ -0,0 +1,109 @@
+import { createMemo, For, Show, type Accessor, type JSX } from "solid-js"
+import {
+  DragDropProvider,
+  DragDropSensors,
+  DragOverlay,
+  SortableProvider,
+  closestCenter,
+  type DragEvent,
+} from "@thisbeyond/solid-dnd"
+import { ConstrainDragXAxis } from "@/utils/solid-dnd"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { Tooltip, TooltipKeybind } from "@opencode-ai/ui/tooltip"
+import { type LocalProject } from "@/context/layout"
+import { sidebarExpanded } from "./sidebar-shell-helpers"
+
+export const SidebarContent = (props: {
+  mobile?: boolean
+  opened: Accessor<boolean>
+  aimMove: (event: MouseEvent) => void
+  projects: Accessor<LocalProject[]>
+  renderProject: (project: LocalProject) => JSX.Element
+  handleDragStart: (event: unknown) => void
+  handleDragEnd: () => void
+  handleDragOver: (event: DragEvent) => void
+  openProjectLabel: JSX.Element
+  openProjectKeybind: Accessor<string | undefined>
+  onOpenProject: () => void
+  renderProjectOverlay: () => JSX.Element
+  settingsLabel: Accessor<string>
+  settingsKeybind: Accessor<string | undefined>
+  onOpenSettings: () => void
+  helpLabel: Accessor<string>
+  onOpenHelp: () => void
+  renderPanel: () => JSX.Element
+}): JSX.Element => {
+  const expanded = createMemo(() => sidebarExpanded(props.mobile, props.opened()))
+
+  return (
+    <div class="flex h-full w-full overflow-hidden">
+      <div
+        class="w-16 shrink-0 bg-background-base flex flex-col items-center overflow-hidden"
+        onMouseMove={props.aimMove}
+      >
+        <div class="flex-1 min-h-0 w-full">
+          <DragDropProvider
+            onDragStart={props.handleDragStart}
+            onDragEnd={props.handleDragEnd}
+            onDragOver={props.handleDragOver}
+            collisionDetector={closestCenter}
+          >
+            <DragDropSensors />
+            <ConstrainDragXAxis />
+            <div class="h-full w-full flex flex-col items-center gap-3 px-3 py-2 overflow-y-auto no-scrollbar">
+              <SortableProvider ids={props.projects().map((p) => p.worktree)}>
+                <For each={props.projects()}>{(project) => props.renderProject(project)}</For>
+              </SortableProvider>
+              <Tooltip
+                placement={props.mobile ? "bottom" : "right"}
+                value={
+                  <div class="flex items-center gap-2">
+                    <span>{props.openProjectLabel}</span>
+                    <Show when={!props.mobile && !!props.openProjectKeybind()}>
+                      <span class="text-icon-base text-12-medium">{props.openProjectKeybind()}</span>
+                    </Show>
+                  </div>
+                }
+              >
+                <IconButton
+                  icon="plus"
+                  variant="ghost"
+                  size="large"
+                  onClick={props.onOpenProject}
+                  aria-label={typeof props.openProjectLabel === "string" ? props.openProjectLabel : undefined}
+                />
+              </Tooltip>
+            </div>
+            <DragOverlay>{props.renderProjectOverlay()}</DragOverlay>
+          </DragDropProvider>
+        </div>
+        <div class="shrink-0 w-full pt-3 pb-3 flex flex-col items-center gap-2">
+          <TooltipKeybind
+            placement={props.mobile ? "bottom" : "right"}
+            title={props.settingsLabel()}
+            keybind={props.settingsKeybind() ?? ""}
+          >
+            <IconButton
+              icon="settings-gear"
+              variant="ghost"
+              size="large"
+              onClick={props.onOpenSettings}
+              aria-label={props.settingsLabel()}
+            />
+          </TooltipKeybind>
+          <Tooltip placement={props.mobile ? "bottom" : "right"} value={props.helpLabel()}>
+            <IconButton
+              icon="help"
+              variant="ghost"
+              size="large"
+              onClick={props.onOpenHelp}
+              aria-label={props.helpLabel()}
+            />
+          </Tooltip>
+        </div>
+      </div>
+
+      <Show when={expanded()}>{props.renderPanel()}</Show>
+    </div>
+  )
+}
diff --git a/packages/app/src/pages/layout/sidebar-workspace-helpers.ts b/packages/app/src/pages/layout/sidebar-workspace-helpers.ts
new file mode 100644
index 000000000..aa7cb480e
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-workspace-helpers.ts
@@ -0,0 +1,2 @@
+export const workspaceOpenState = (expanded: Record<string, boolean>, directory: string, local: boolean) =>
+  expanded[directory] ?? local
diff --git a/packages/app/src/pages/layout/sidebar-workspace.test.ts b/packages/app/src/pages/layout/sidebar-workspace.test.ts
new file mode 100644
index 000000000..d71c39fc8
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-workspace.test.ts
@@ -0,0 +1,13 @@
+import { describe, expect, test } from "bun:test"
+import { workspaceOpenState } from "./sidebar-workspace-helpers"
+
+describe("workspaceOpenState", () => {
+  test("defaults to local workspace open", () => {
+    expect(workspaceOpenState({}, "/tmp/root", true)).toBe(true)
+  })
+
+  test("uses persisted expansion state when present", () => {
+    expect(workspaceOpenState({ "/tmp/root": false }, "/tmp/root", true)).toBe(false)
+    expect(workspaceOpenState({ "/tmp/branch": true }, "/tmp/branch", false)).toBe(true)
+  })
+})
diff --git a/packages/app/src/pages/layout/sidebar-workspace.tsx b/packages/app/src/pages/layout/sidebar-workspace.tsx
new file mode 100644
index 000000000..11bad84b0
--- /dev/null
+++ b/packages/app/src/pages/layout/sidebar-workspace.tsx
@@ -0,0 +1,387 @@
+import { createEffect, createMemo, For, Show, type Accessor, type JSX } from "solid-js"
+import { createStore } from "solid-js/store"
+import { createSortable } from "@thisbeyond/solid-dnd"
+import { base64Encode } from "@opencode-ai/util/encode"
+import { getFilename } from "@opencode-ai/util/path"
+import { Button } from "@opencode-ai/ui/button"
+import { Collapsible } from "@opencode-ai/ui/collapsible"
+import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
+import { Icon } from "@opencode-ai/ui/icon"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { Spinner } from "@opencode-ai/ui/spinner"
+import { Tooltip } from "@opencode-ai/ui/tooltip"
+import { type Session } from "@opencode-ai/sdk/v2/client"
+import { type LocalProject } from "@/context/layout"
+import { useGlobalSync } from "@/context/global-sync"
+import { useLanguage } from "@/context/language"
+import { NewSessionItem, SessionItem, SessionSkeleton } from "./sidebar-items"
+import { childMapByParent, sortedRootSessions } from "./helpers"
+
+type InlineEditorComponent = (props: {
+  id: string
+  value: Accessor<string>
+  onSave: (next: string) => void
+  class?: string
+  displayClass?: string
+  editing?: boolean
+  stopPropagation?: boolean
+  openOnDblClick?: boolean
+}) => JSX.Element
+
+export type WorkspaceSidebarContext = {
+  currentDir: Accessor<string>
+  sidebarExpanded: Accessor<boolean>
+  sidebarHovering: Accessor<boolean>
+  nav: Accessor<HTMLElement | undefined>
+  hoverSession: Accessor<string | undefined>
+  setHoverSession: (id: string | undefined) => void
+  clearHoverProjectSoon: () => void
+  prefetchSession: (session: Session, priority?: "high" | "low") => void
+  archiveSession: (session: Session) => Promise<void>
+  workspaceName: (directory: string, projectId?: string, branch?: string) => string | undefined
+  renameWorkspace: (directory: string, next: string, projectId?: string, branch?: string) => void
+  editorOpen: (id: string) => boolean
+  openEditor: (id: string, value: string) => void
+  closeEditor: () => void
+  setEditor: (key: "value", value: string) => void
+  InlineEditor: InlineEditorComponent
+  isBusy: (directory: string) => boolean
+  workspaceExpanded: (directory: string, local: boolean) => boolean
+  setWorkspaceExpanded: (directory: string, value: boolean) => void
+  showResetWorkspaceDialog: (root: string, directory: string) => void
+  showDeleteWorkspaceDialog: (root: string, directory: string) => void
+  setScrollContainerRef: (el: HTMLDivElement | undefined, mobile?: boolean) => void
+}
+
+export const WorkspaceDragOverlay = (props: {
+  sidebarProject: Accessor<LocalProject | undefined>
+  activeWorkspace: Accessor<string | undefined>
+  workspaceLabel: (directory: string, branch?: string, projectId?: string) => string
+}): JSX.Element => {
+  const globalSync = useGlobalSync()
+  const language = useLanguage()
+  const label = createMemo(() => {
+    const project = props.sidebarProject()
+    if (!project) return
+    const directory = props.activeWorkspace()
+    if (!directory) return
+
+    const [workspaceStore] = globalSync.child(directory, { bootstrap: false })
+    const kind =
+      directory === project.worktree ? language.t("workspace.type.local") : language.t("workspace.type.sandbox")
+    const name = props.workspaceLabel(directory, workspaceStore.vcs?.branch, project.id)
+    return `${kind} : ${name}`
+  })
+
+  return (
+    <Show when={label()}>
+      {(value) => <div class="bg-background-base rounded-md px-2 py-1 text-14-medium text-text-strong">{value()}</div>}
+    </Show>
+  )
+}
+
+export const SortableWorkspace = (props: {
+  ctx: WorkspaceSidebarContext
+  directory: string
+  project: LocalProject
+  mobile?: boolean
+}): JSX.Element => {
+  const globalSync = useGlobalSync()
+  const language = useLanguage()
+  const sortable = createSortable(props.directory)
+  const [workspaceStore, setWorkspaceStore] = globalSync.child(props.directory, { bootstrap: false })
+  const [menu, setMenu] = createStore({
+    open: false,
+    pendingRename: false,
+  })
+  const slug = createMemo(() => base64Encode(props.directory))
+  const sessions = createMemo(() => sortedRootSessions(workspaceStore, Date.now()))
+  const children = createMemo(() => childMapByParent(workspaceStore.session))
+  const local = createMemo(() => props.directory === props.project.worktree)
+  const active = createMemo(() => props.ctx.currentDir() === props.directory)
+  const workspaceValue = createMemo(() => {
+    const branch = workspaceStore.vcs?.branch
+    const name = branch ?? getFilename(props.directory)
+    return props.ctx.workspaceName(props.directory, props.project.id, branch) ?? name
+  })
+  const open = createMemo(() => props.ctx.workspaceExpanded(props.directory, local()))
+  const boot = createMemo(() => open() || active())
+  const booted = createMemo((prev) => prev || workspaceStore.status === "complete", false)
+  const hasMore = createMemo(() => workspaceStore.sessionTotal > sessions().length)
+  const busy = createMemo(() => props.ctx.isBusy(props.directory))
+  const wasBusy = createMemo((prev) => prev || busy(), false)
+  const loading = createMemo(() => open() && !booted() && sessions().length === 0 && !wasBusy())
+  const loadMore = async () => {
+    setWorkspaceStore("limit", (limit) => limit + 5)
+    await globalSync.project.loadSessions(props.directory)
+  }
+
+  const workspaceEditActive = createMemo(() => props.ctx.editorOpen(`workspace:${props.directory}`))
+
+  const openWrapper = (value: boolean) => {
+    props.ctx.setWorkspaceExpanded(props.directory, value)
+    if (value) return
+    if (props.ctx.editorOpen(`workspace:${props.directory}`)) props.ctx.closeEditor()
+  }
+
+  createEffect(() => {
+    if (!boot()) return
+    globalSync.child(props.directory, { bootstrap: true })
+  })
+
+  const header = () => (
+    <div class="flex items-center gap-1 min-w-0 flex-1">
+      <div class="flex items-center justify-center shrink-0 size-6">
+        <Show when={busy()} fallback={<Icon name="branch" size="small" />}>
+          <Spinner class="size-[15px]" />
+        </Show>
+      </div>
+      <span class="text-14-medium text-text-base shrink-0">
+        {local() ? language.t("workspace.type.local") : language.t("workspace.type.sandbox")} :
+      </span>
+      <Show
+        when={!local()}
+        fallback={
+          <span class="text-14-medium text-text-base min-w-0 truncate">
+            {workspaceStore.vcs?.branch ?? getFilename(props.directory)}
+          </span>
+        }
+      >
+        <props.ctx.InlineEditor
+          id={`workspace:${props.directory}`}
+          value={workspaceValue}
+          onSave={(next) => {
+            const trimmed = next.trim()
+            if (!trimmed) return
+            props.ctx.renameWorkspace(props.directory, trimmed, props.project.id, workspaceStore.vcs?.branch)
+            props.ctx.setEditor("value", workspaceValue())
+          }}
+          class="text-14-medium text-text-base min-w-0 truncate"
+          displayClass="text-14-medium text-text-base min-w-0 truncate"
+          editing={workspaceEditActive()}
+          stopPropagation={false}
+          openOnDblClick={false}
+        />
+      </Show>
+      <Icon
+        name={open() ? "chevron-down" : "chevron-right"}
+        size="small"
+        class="shrink-0 text-icon-base opacity-0 transition-opacity group-hover/workspace:opacity-100 group-focus-within/workspace:opacity-100"
+      />
+    </div>
+  )
+
+  return (
+    <div
+      // @ts-ignore
+      use:sortable
+      classList={{
+        "opacity-30": sortable.isActiveDraggable,
+        "opacity-50 pointer-events-none": busy(),
+      }}
+    >
+      <Collapsible variant="ghost" open={open()} class="shrink-0" onOpenChange={openWrapper}>
+        <div class="px-2 py-1">
+          <div
+            class="group/workspace relative"
+            data-component="workspace-item"
+            data-workspace={base64Encode(props.directory)}
+          >
+            <div class="flex items-center gap-1">
+              <Show
+                when={workspaceEditActive()}
+                fallback={
+                  <Collapsible.Trigger
+                    class="flex items-center justify-between w-full pl-2 pr-16 py-1.5 rounded-md hover:bg-surface-raised-base-hover"
+                    data-action="workspace-toggle"
+                    data-workspace={base64Encode(props.directory)}
+                  >
+                    {header()}
+                  </Collapsible.Trigger>
+                }
+              >
+                <div class="flex items-center justify-between w-full pl-2 pr-16 py-1.5 rounded-md">{header()}</div>
+              </Show>
+              <div
+                class="absolute right-1 top-1/2 -translate-y-1/2 flex items-center gap-0.5 transition-opacity"
+                classList={{
+                  "opacity-100 pointer-events-auto": menu.open,
+                  "opacity-0 pointer-events-none": !menu.open,
+                  "group-hover/workspace:opacity-100 group-hover/workspace:pointer-events-auto": true,
+                  "group-focus-within/workspace:opacity-100 group-focus-within/workspace:pointer-events-auto": true,
+                }}
+              >
+                <DropdownMenu
+                  modal={!props.ctx.sidebarHovering()}
+                  open={menu.open}
+                  onOpenChange={(open) => setMenu("open", open)}
+                >
+                  <Tooltip value={language.t("common.moreOptions")} placement="top">
+                    <DropdownMenu.Trigger
+                      as={IconButton}
+                      icon="dot-grid"
+                      variant="ghost"
+                      class="size-6 rounded-md"
+                      data-action="workspace-menu"
+                      data-workspace={base64Encode(props.directory)}
+                      aria-label={language.t("common.moreOptions")}
+                    />
+                  </Tooltip>
+                  <DropdownMenu.Portal mount={!props.mobile ? props.ctx.nav() : undefined}>
+                    <DropdownMenu.Content
+                      onCloseAutoFocus={(event) => {
+                        if (!menu.pendingRename) return
+                        event.preventDefault()
+                        setMenu("pendingRename", false)
+                        props.ctx.openEditor(`workspace:${props.directory}`, workspaceValue())
+                      }}
+                    >
+                      <DropdownMenu.Item
+                        disabled={local()}
+                        onSelect={() => {
+                          setMenu("pendingRename", true)
+                          setMenu("open", false)
+                        }}
+                      >
+                        <DropdownMenu.ItemLabel>{language.t("common.rename")}</DropdownMenu.ItemLabel>
+                      </DropdownMenu.Item>
+                      <DropdownMenu.Item
+                        disabled={local() || busy()}
+                        onSelect={() => props.ctx.showResetWorkspaceDialog(props.project.worktree, props.directory)}
+                      >
+                        <DropdownMenu.ItemLabel>{language.t("common.reset")}</DropdownMenu.ItemLabel>
+                      </DropdownMenu.Item>
+                      <DropdownMenu.Item
+                        disabled={local() || busy()}
+                        onSelect={() => props.ctx.showDeleteWorkspaceDialog(props.project.worktree, props.directory)}
+                      >
+                        <DropdownMenu.ItemLabel>{language.t("common.delete")}</DropdownMenu.ItemLabel>
+                      </DropdownMenu.Item>
+                    </DropdownMenu.Content>
+                  </DropdownMenu.Portal>
+                </DropdownMenu>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        <Collapsible.Content>
+          <nav class="flex flex-col gap-1 px-2">
+            <NewSessionItem
+              slug={slug()}
+              mobile={props.mobile}
+              sidebarExpanded={props.ctx.sidebarExpanded}
+              clearHoverProjectSoon={props.ctx.clearHoverProjectSoon}
+              setHoverSession={props.ctx.setHoverSession}
+            />
+            <Show when={loading()}>
+              <SessionSkeleton />
+            </Show>
+            <For each={sessions()}>
+              {(session) => (
+                <SessionItem
+                  session={session}
+                  slug={slug()}
+                  mobile={props.mobile}
+                  children={children()}
+                  sidebarExpanded={props.ctx.sidebarExpanded}
+                  sidebarHovering={props.ctx.sidebarHovering}
+                  nav={props.ctx.nav}
+                  hoverSession={props.ctx.hoverSession}
+                  setHoverSession={props.ctx.setHoverSession}
+                  clearHoverProjectSoon={props.ctx.clearHoverProjectSoon}
+                  prefetchSession={props.ctx.prefetchSession}
+                  archiveSession={props.ctx.archiveSession}
+                />
+              )}
+            </For>
+            <Show when={hasMore()}>
+              <div class="relative w-full py-1">
+                <Button
+                  variant="ghost"
+                  class="flex w-full text-left justify-start text-14-regular text-text-weak pl-9 pr-10"
+                  size="large"
+                  onClick={(e: MouseEvent) => {
+                    loadMore()
+                    ;(e.currentTarget as HTMLButtonElement).blur()
+                  }}
+                >
+                  {language.t("common.loadMore")}
+                </Button>
+              </div>
+            </Show>
+          </nav>
+        </Collapsible.Content>
+      </Collapsible>
+    </div>
+  )
+}
+
+export const LocalWorkspace = (props: {
+  ctx: WorkspaceSidebarContext
+  project: LocalProject
+  mobile?: boolean
+}): JSX.Element => {
+  const globalSync = useGlobalSync()
+  const language = useLanguage()
+  const workspace = createMemo(() => {
+    const [store, setStore] = globalSync.child(props.project.worktree)
+    return { store, setStore }
+  })
+  const slug = createMemo(() => base64Encode(props.project.worktree))
+  const sessions = createMemo(() => sortedRootSessions(workspace().store, Date.now()))
+  const children = createMemo(() => childMapByParent(workspace().store.session))
+  const booted = createMemo((prev) => prev || workspace().store.status === "complete", false)
+  const loading = createMemo(() => !booted() && sessions().length === 0)
+  const hasMore = createMemo(() => workspace().store.sessionTotal > sessions().length)
+  const loadMore = async () => {
+    workspace().setStore("limit", (limit) => limit + 5)
+    await globalSync.project.loadSessions(props.project.worktree)
+  }
+
+  return (
+    <div
+      ref={(el) => props.ctx.setScrollContainerRef(el, props.mobile)}
+      class="size-full flex flex-col py-2 overflow-y-auto no-scrollbar [overflow-anchor:none]"
+    >
+      <nav class="flex flex-col gap-1 px-2">
+        <Show when={loading()}>
+          <SessionSkeleton />
+        </Show>
+        <For each={sessions()}>
+          {(session) => (
+            <SessionItem
+              session={session}
+              slug={slug()}
+              mobile={props.mobile}
+              children={children()}
+              sidebarExpanded={props.ctx.sidebarExpanded}
+              sidebarHovering={props.ctx.sidebarHovering}
+              nav={props.ctx.nav}
+              hoverSession={props.ctx.hoverSession}
+              setHoverSession={props.ctx.setHoverSession}
+              clearHoverProjectSoon={props.ctx.clearHoverProjectSoon}
+              prefetchSession={props.ctx.prefetchSession}
+              archiveSession={props.ctx.archiveSession}
+            />
+          )}
+        </For>
+        <Show when={hasMore()}>
+          <div class="relative w-full py-1">
+            <Button
+              variant="ghost"
+              class="flex w-full text-left justify-start text-14-regular text-text-weak pl-9 pr-10"
+              size="large"
+              onClick={(e: MouseEvent) => {
+                loadMore()
+                ;(e.currentTarget as HTMLButtonElement).blur()
+              }}
+            >
+              {language.t("common.loadMore")}
+            </Button>
+          </div>
+        </Show>
+      </nav>
+    </div>
+  )
+}
diff --git a/packages/app/src/pages/session.tsx b/packages/app/src/pages/session.tsx
index 67606e860..a70d4e8a2 100644
--- a/packages/app/src/pages/session.tsx
+++ b/packages/app/src/pages/session.tsx
@@ -1,84 +1,63 @@
-import {
-  For,
-  onCleanup,
-  onMount,
-  Show,
-  Match,
-  Switch,
-  createMemo,
-  createEffect,
-  createSignal,
-  on,
-  type JSX,
-} from "solid-js"
+import { For, onCleanup, Show, Match, Switch, createMemo, createEffect, on } from "solid-js"
 import { createMediaQuery } from "@solid-primitives/media"
 import { createResizeObserver } from "@solid-primitives/resize-observer"
 import { Dynamic } from "solid-js/web"
 import { useLocal } from "@/context/local"
 import { selectionFromLines, useFile, type FileSelection, type SelectedLineRange } from "@/context/file"
 import { createStore, produce } from "solid-js/store"
-import { PromptInput } from "@/components/prompt-input"
 import { SessionContextUsage } from "@/components/session-context-usage"
 import { IconButton } from "@opencode-ai/ui/icon-button"
 import { Button } from "@opencode-ai/ui/button"
-import { Icon } from "@opencode-ai/ui/icon"
 import { Tooltip, TooltipKeybind } from "@opencode-ai/ui/tooltip"
-import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
 import { Dialog } from "@opencode-ai/ui/dialog"
-import { InlineInput } from "@opencode-ai/ui/inline-input"
 import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
 import { Tabs } from "@opencode-ai/ui/tabs"
 import { Select } from "@opencode-ai/ui/select"
 import { useCodeComponent } from "@opencode-ai/ui/context/code"
-import { LineComment as LineCommentView, LineCommentEditor } from "@opencode-ai/ui/line-comment"
-import { SessionTurn } from "@opencode-ai/ui/session-turn"
-import { BasicTool } from "@opencode-ai/ui/basic-tool"
 import { createAutoScroll } from "@opencode-ai/ui/hooks"
-import { SessionReview } from "@opencode-ai/ui/session-review"
 import { Mark } from "@opencode-ai/ui/logo"
-import { QuestionDock } from "@/components/question-dock"
 
 import { DragDropProvider, DragDropSensors, DragOverlay, SortableProvider, closestCenter } from "@thisbeyond/solid-dnd"
 import type { DragEvent } from "@thisbeyond/solid-dnd"
 import { useSync } from "@/context/sync"
 import { useTerminal, type LocalPTY } from "@/context/terminal"
 import { useLayout } from "@/context/layout"
-import { Terminal } from "@/components/terminal"
 import { checksum, base64Encode } from "@opencode-ai/util/encode"
 import { findLast } from "@opencode-ai/util/array"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
 import { DialogSelectFile } from "@/components/dialog-select-file"
 import FileTree from "@/components/file-tree"
-import { DialogSelectModel } from "@/components/dialog-select-model"
-import { DialogSelectMcp } from "@/components/dialog-select-mcp"
-import { DialogFork } from "@/components/dialog-fork"
 import { useCommand } from "@/context/command"
 import { useLanguage } from "@/context/language"
 import { useNavigate, useParams } from "@solidjs/router"
 import { UserMessage } from "@opencode-ai/sdk/v2"
-import type { FileDiff } from "@opencode-ai/sdk/v2"
 import { useSDK } from "@/context/sdk"
 import { usePrompt } from "@/context/prompt"
-import { useComments, type LineComment } from "@/context/comments"
-import { extractPromptFromParts } from "@/utils/prompt"
+import { useComments } from "@/context/comments"
 import { ConstrainDragYAxis, getDraggableId } from "@/utils/solid-dnd"
 import { usePermission } from "@/context/permission"
-import { decode64 } from "@/utils/base64"
 import { showToast } from "@opencode-ai/ui/toast"
-import {
-  SessionHeader,
-  SessionContextTab,
-  SortableTab,
-  FileVisual,
-  SortableTerminalTab,
-  NewSessionView,
-} from "@/components/session"
+import { SessionHeader, SessionContextTab, SortableTab, FileVisual, NewSessionView } from "@/components/session"
 import { navMark, navParams } from "@/utils/perf"
 import { same } from "@/utils/same"
-import { combineCommandSections, createOpenReviewFile, focusTerminalById } from "@/pages/session/helpers"
+import { createOpenReviewFile, focusTerminalById } from "@/pages/session/helpers"
 import { createScrollSpy } from "@/pages/session/scroll-spy"
-
-type DiffStyle = "unified" | "split"
+import { createFileTabListSync } from "@/pages/session/file-tab-scroll"
+import { FileTabContent } from "@/pages/session/file-tabs"
+import {
+  SessionReviewTab,
+  StickyAddButton,
+  type DiffStyle,
+  type SessionReviewTabProps,
+} from "@/pages/session/review-tab"
+import { TerminalPanel } from "@/pages/session/terminal-panel"
+import { terminalTabLabel } from "@/pages/session/terminal-label"
+import { MessageTimeline } from "@/pages/session/message-timeline"
+import { useSessionCommands } from "@/pages/session/use-session-commands"
+import { SessionPromptDock } from "@/pages/session/session-prompt-dock"
+import { SessionMobileTabs } from "@/pages/session/session-mobile-tabs"
+import { SessionSidePanel } from "@/pages/session/session-side-panel"
+import { useSessionHashScroll } from "@/pages/session/use-session-hash-scroll"
 
 type HandoffSession = {
   prompt: string
@@ -107,155 +86,6 @@ const setSessionHandoff = (key: string, patch: Partial<HandoffSession>) => {
   touch(handoff.session, key, { ...prev, ...patch })
 }
 
-interface SessionReviewTabProps {
-  title?: JSX.Element
-  empty?: JSX.Element
-  diffs: () => FileDiff[]
-  view: () => ReturnType<ReturnType<typeof useLayout>["view"]>
-  diffStyle: DiffStyle
-  onDiffStyleChange?: (style: DiffStyle) => void
-  onViewFile?: (file: string) => void
-  onLineComment?: (comment: { file: string; selection: SelectedLineRange; comment: string; preview?: string }) => void
-  comments?: LineComment[]
-  focusedComment?: { file: string; id: string } | null
-  onFocusedCommentChange?: (focus: { file: string; id: string } | null) => void
-  focusedFile?: string
-  onScrollRef?: (el: HTMLDivElement) => void
-  classes?: {
-    root?: string
-    header?: string
-    container?: string
-  }
-}
-
-function StickyAddButton(props: { children: JSX.Element }) {
-  const [stuck, setStuck] = createSignal(false)
-  let button: HTMLDivElement | undefined
-
-  createEffect(() => {
-    const node = button
-    if (!node) return
-
-    const scroll = node.parentElement
-    if (!scroll) return
-
-    const handler = () => {
-      const rect = node.getBoundingClientRect()
-      const scrollRect = scroll.getBoundingClientRect()
-      setStuck(rect.right >= scrollRect.right && scroll.scrollWidth > scroll.clientWidth)
-    }
-
-    scroll.addEventListener("scroll", handler, { passive: true })
-    const observer = new ResizeObserver(handler)
-    observer.observe(scroll)
-    handler()
-    onCleanup(() => {
-      scroll.removeEventListener("scroll", handler)
-      observer.disconnect()
-    })
-  })
-
-  return (
-    <div
-      ref={button}
-      class="bg-background-base h-full shrink-0 sticky right-0 z-10 flex items-center justify-center border-b border-border-weak-base px-3"
-      classList={{ "border-l": stuck() }}
-    >
-      {props.children}
-    </div>
-  )
-}
-
-function SessionReviewTab(props: SessionReviewTabProps) {
-  let scroll: HTMLDivElement | undefined
-  let frame: number | undefined
-  let pending: { x: number; y: number } | undefined
-
-  const sdk = useSDK()
-
-  const readFile = async (path: string) => {
-    return sdk.client.file
-      .read({ path })
-      .then((x) => x.data)
-      .catch(() => undefined)
-  }
-
-  const restoreScroll = () => {
-    const el = scroll
-    if (!el) return
-
-    const s = props.view().scroll("review")
-    if (!s) return
-
-    if (el.scrollTop !== s.y) el.scrollTop = s.y
-    if (el.scrollLeft !== s.x) el.scrollLeft = s.x
-  }
-
-  const handleScroll = (event: Event & { currentTarget: HTMLDivElement }) => {
-    pending = {
-      x: event.currentTarget.scrollLeft,
-      y: event.currentTarget.scrollTop,
-    }
-    if (frame !== undefined) return
-
-    frame = requestAnimationFrame(() => {
-      frame = undefined
-
-      const next = pending
-      pending = undefined
-      if (!next) return
-
-      props.view().setScroll("review", next)
-    })
-  }
-
-  createEffect(
-    on(
-      () => props.diffs().length,
-      () => {
-        requestAnimationFrame(restoreScroll)
-      },
-      { defer: true },
-    ),
-  )
-
-  onCleanup(() => {
-    if (frame === undefined) return
-    cancelAnimationFrame(frame)
-  })
-
-  return (
-    <SessionReview
-      title={props.title}
-      empty={props.empty}
-      scrollRef={(el) => {
-        scroll = el
-        props.onScrollRef?.(el)
-        restoreScroll()
-      }}
-      onScroll={handleScroll}
-      onDiffRendered={() => requestAnimationFrame(restoreScroll)}
-      open={props.view().review.open()}
-      onOpenChange={props.view().review.setOpen}
-      classes={{
-        root: props.classes?.root ?? "pb-40",
-        header: props.classes?.header ?? "px-6",
-        container: props.classes?.container ?? "px-6",
-      }}
-      diffs={props.diffs()}
-      diffStyle={props.diffStyle}
-      onDiffStyleChange={props.onDiffStyleChange}
-      onViewFile={props.onViewFile}
-      focusedFile={props.focusedFile}
-      readFile={readFile}
-      onLineComment={props.onLineComment}
-      comments={props.comments}
-      focusedComment={props.focusedComment}
-      onFocusedCommentChange={props.onFocusedCommentChange}
-    />
-  )
-}
-
 export default function Page() {
   const layout = useLayout()
   const local = useLocal()
@@ -820,8 +650,6 @@ export default function Page() {
 
   const scrollGestureWindowMs = 250
 
-  let touchGesture: number | undefined
-
   const markScrollGesture = (target?: EventTarget | null) => {
     const root = scroller
     if (!root) return
@@ -963,396 +791,6 @@ export default function Page() {
     })
   }
 
-  const sessionCommands = createMemo(() => [
-    {
-      id: "session.new",
-      title: language.t("command.session.new"),
-      category: language.t("command.category.session"),
-      keybind: "mod+shift+s",
-      slash: "new",
-      onSelect: () => navigate(`/${params.dir}/session`),
-    },
-  ])
-
-  const fileCommands = createMemo(() => [
-    {
-      id: "file.open",
-      title: language.t("command.file.open"),
-      description: language.t("palette.search.placeholder"),
-      category: language.t("command.category.file"),
-      keybind: "mod+p",
-      slash: "open",
-      onSelect: () => dialog.show(() => <DialogSelectFile onOpenFile={showAllFiles} />),
-    },
-    {
-      id: "tab.close",
-      title: language.t("command.tab.close"),
-      category: language.t("command.category.file"),
-      keybind: "mod+w",
-      disabled: !tabs().active(),
-      onSelect: () => {
-        const active = tabs().active()
-        if (!active) return
-        tabs().close(active)
-      },
-    },
-  ])
-
-  const contextCommands = createMemo(() => [
-    {
-      id: "context.addSelection",
-      title: language.t("command.context.addSelection"),
-      description: language.t("command.context.addSelection.description"),
-      category: language.t("command.category.context"),
-      keybind: "mod+shift+l",
-      disabled: (() => {
-        const active = tabs().active()
-        if (!active) return true
-        const path = file.pathFromTab(active)
-        if (!path) return true
-        return file.selectedLines(path) == null
-      })(),
-      onSelect: () => {
-        const active = tabs().active()
-        if (!active) return
-        const path = file.pathFromTab(active)
-        if (!path) return
-
-        const range = file.selectedLines(path)
-        if (!range) {
-          showToast({
-            title: language.t("toast.context.noLineSelection.title"),
-            description: language.t("toast.context.noLineSelection.description"),
-          })
-          return
-        }
-
-        addSelectionToContext(path, selectionFromLines(range))
-      },
-    },
-  ])
-
-  const viewCommands = createMemo(() => [
-    {
-      id: "terminal.toggle",
-      title: language.t("command.terminal.toggle"),
-      description: "",
-      category: language.t("command.category.view"),
-      keybind: "ctrl+`",
-      slash: "terminal",
-      onSelect: () => view().terminal.toggle(),
-    },
-    {
-      id: "review.toggle",
-      title: language.t("command.review.toggle"),
-      description: "",
-      category: language.t("command.category.view"),
-      keybind: "mod+shift+r",
-      onSelect: () => view().reviewPanel.toggle(),
-    },
-    {
-      id: "fileTree.toggle",
-      title: language.t("command.fileTree.toggle"),
-      description: "",
-      category: language.t("command.category.view"),
-      onSelect: () => {
-        const opening = !layout.fileTree.opened()
-        if (opening && !view().reviewPanel.opened()) view().reviewPanel.open()
-        layout.fileTree.toggle()
-      },
-    },
-    {
-      id: "terminal.new",
-      title: language.t("command.terminal.new"),
-      description: language.t("command.terminal.new.description"),
-      category: language.t("command.category.terminal"),
-      keybind: "ctrl+alt+t",
-      onSelect: () => {
-        if (terminal.all().length > 0) terminal.new()
-        view().terminal.open()
-      },
-    },
-    {
-      id: "steps.toggle",
-      title: language.t("command.steps.toggle"),
-      description: language.t("command.steps.toggle.description"),
-      category: language.t("command.category.view"),
-      keybind: "mod+e",
-      slash: "steps",
-      disabled: !params.id,
-      onSelect: () => {
-        const msg = activeMessage()
-        if (!msg) return
-        setStore("expanded", msg.id, (open: boolean | undefined) => !open)
-      },
-    },
-  ])
-
-  const messageCommands = createMemo(() => [
-    {
-      id: "message.previous",
-      title: language.t("command.message.previous"),
-      description: language.t("command.message.previous.description"),
-      category: language.t("command.category.session"),
-      keybind: "mod+arrowup",
-      disabled: !params.id,
-      onSelect: () => navigateMessageByOffset(-1),
-    },
-    {
-      id: "message.next",
-      title: language.t("command.message.next"),
-      description: language.t("command.message.next.description"),
-      category: language.t("command.category.session"),
-      keybind: "mod+arrowdown",
-      disabled: !params.id,
-      onSelect: () => navigateMessageByOffset(1),
-    },
-  ])
-
-  const agentCommands = createMemo(() => [
-    {
-      id: "model.choose",
-      title: language.t("command.model.choose"),
-      description: language.t("command.model.choose.description"),
-      category: language.t("command.category.model"),
-      keybind: "mod+'",
-      slash: "model",
-      onSelect: () => dialog.show(() => <DialogSelectModel />),
-    },
-    {
-      id: "mcp.toggle",
-      title: language.t("command.mcp.toggle"),
-      description: language.t("command.mcp.toggle.description"),
-      category: language.t("command.category.mcp"),
-      keybind: "mod+;",
-      slash: "mcp",
-      onSelect: () => dialog.show(() => <DialogSelectMcp />),
-    },
-    {
-      id: "agent.cycle",
-      title: language.t("command.agent.cycle"),
-      description: language.t("command.agent.cycle.description"),
-      category: language.t("command.category.agent"),
-      keybind: "mod+.",
-      slash: "agent",
-      onSelect: () => local.agent.move(1),
-    },
-    {
-      id: "agent.cycle.reverse",
-      title: language.t("command.agent.cycle.reverse"),
-      description: language.t("command.agent.cycle.reverse.description"),
-      category: language.t("command.category.agent"),
-      keybind: "shift+mod+.",
-      onSelect: () => local.agent.move(-1),
-    },
-    {
-      id: "model.variant.cycle",
-      title: language.t("command.model.variant.cycle"),
-      description: language.t("command.model.variant.cycle.description"),
-      category: language.t("command.category.model"),
-      keybind: "shift+mod+d",
-      onSelect: () => {
-        local.model.variant.cycle()
-      },
-    },
-  ])
-
-  const permissionCommands = createMemo(() => [
-    {
-      id: "permissions.autoaccept",
-      title:
-        params.id && permission.isAutoAccepting(params.id, sdk.directory)
-          ? language.t("command.permissions.autoaccept.disable")
-          : language.t("command.permissions.autoaccept.enable"),
-      category: language.t("command.category.permissions"),
-      keybind: "mod+shift+a",
-      disabled: !params.id || !permission.permissionsEnabled(),
-      onSelect: () => {
-        const sessionID = params.id
-        if (!sessionID) return
-        permission.toggleAutoAccept(sessionID, sdk.directory)
-        showToast({
-          title: permission.isAutoAccepting(sessionID, sdk.directory)
-            ? language.t("toast.permissions.autoaccept.on.title")
-            : language.t("toast.permissions.autoaccept.off.title"),
-          description: permission.isAutoAccepting(sessionID, sdk.directory)
-            ? language.t("toast.permissions.autoaccept.on.description")
-            : language.t("toast.permissions.autoaccept.off.description"),
-        })
-      },
-    },
-  ])
-
-  const sessionActionCommands = createMemo(() => [
-    {
-      id: "session.undo",
-      title: language.t("command.session.undo"),
-      description: language.t("command.session.undo.description"),
-      category: language.t("command.category.session"),
-      slash: "undo",
-      disabled: !params.id || visibleUserMessages().length === 0,
-      onSelect: async () => {
-        const sessionID = params.id
-        if (!sessionID) return
-        if (status()?.type !== "idle") {
-          await sdk.client.session.abort({ sessionID }).catch(() => {})
-        }
-        const revert = info()?.revert?.messageID
-        const message = findLast(userMessages(), (x) => !revert || x.id < revert)
-        if (!message) return
-        await sdk.client.session.revert({ sessionID, messageID: message.id })
-        const parts = sync.data.part[message.id]
-        if (parts) {
-          const restored = extractPromptFromParts(parts, { directory: sdk.directory })
-          prompt.set(restored)
-        }
-        const priorMessage = findLast(userMessages(), (x) => x.id < message.id)
-        setActiveMessage(priorMessage)
-      },
-    },
-    {
-      id: "session.redo",
-      title: language.t("command.session.redo"),
-      description: language.t("command.session.redo.description"),
-      category: language.t("command.category.session"),
-      slash: "redo",
-      disabled: !params.id || !info()?.revert?.messageID,
-      onSelect: async () => {
-        const sessionID = params.id
-        if (!sessionID) return
-        const revertMessageID = info()?.revert?.messageID
-        if (!revertMessageID) return
-        const nextMessage = userMessages().find((x) => x.id > revertMessageID)
-        if (!nextMessage) {
-          await sdk.client.session.unrevert({ sessionID })
-          prompt.reset()
-          const lastMsg = findLast(userMessages(), (x) => x.id >= revertMessageID)
-          setActiveMessage(lastMsg)
-          return
-        }
-        await sdk.client.session.revert({ sessionID, messageID: nextMessage.id })
-        const priorMsg = findLast(userMessages(), (x) => x.id < nextMessage.id)
-        setActiveMessage(priorMsg)
-      },
-    },
-    {
-      id: "session.compact",
-      title: language.t("command.session.compact"),
-      description: language.t("command.session.compact.description"),
-      category: language.t("command.category.session"),
-      slash: "compact",
-      disabled: !params.id || visibleUserMessages().length === 0,
-      onSelect: async () => {
-        const sessionID = params.id
-        if (!sessionID) return
-        const model = local.model.current()
-        if (!model) {
-          showToast({
-            title: language.t("toast.model.none.title"),
-            description: language.t("toast.model.none.description"),
-          })
-          return
-        }
-        await sdk.client.session.summarize({
-          sessionID,
-          modelID: model.id,
-          providerID: model.provider.id,
-        })
-      },
-    },
-    {
-      id: "session.fork",
-      title: language.t("command.session.fork"),
-      description: language.t("command.session.fork.description"),
-      category: language.t("command.category.session"),
-      slash: "fork",
-      disabled: !params.id || visibleUserMessages().length === 0,
-      onSelect: () => dialog.show(() => <DialogFork />),
-    },
-  ])
-
-  const shareCommands = createMemo(() => {
-    if (sync.data.config.share === "disabled") return []
-    return [
-      {
-        id: "session.share",
-        title: language.t("command.session.share"),
-        description: language.t("command.session.share.description"),
-        category: language.t("command.category.session"),
-        slash: "share",
-        disabled: !params.id || !!info()?.share?.url,
-        onSelect: async () => {
-          if (!params.id) return
-          await sdk.client.session
-            .share({ sessionID: params.id })
-            .then((res) => {
-              navigator.clipboard.writeText(res.data!.share!.url).catch(() =>
-                showToast({
-                  title: language.t("toast.session.share.copyFailed.title"),
-                  variant: "error",
-                }),
-              )
-            })
-            .then(() =>
-              showToast({
-                title: language.t("toast.session.share.success.title"),
-                description: language.t("toast.session.share.success.description"),
-                variant: "success",
-              }),
-            )
-            .catch(() =>
-              showToast({
-                title: language.t("toast.session.share.failed.title"),
-                description: language.t("toast.session.share.failed.description"),
-                variant: "error",
-              }),
-            )
-        },
-      },
-      {
-        id: "session.unshare",
-        title: language.t("command.session.unshare"),
-        description: language.t("command.session.unshare.description"),
-        category: language.t("command.category.session"),
-        slash: "unshare",
-        disabled: !params.id || !info()?.share?.url,
-        onSelect: async () => {
-          if (!params.id) return
-          await sdk.client.session
-            .unshare({ sessionID: params.id })
-            .then(() =>
-              showToast({
-                title: language.t("toast.session.unshare.success.title"),
-                description: language.t("toast.session.unshare.success.description"),
-                variant: "success",
-              }),
-            )
-            .catch(() =>
-              showToast({
-                title: language.t("toast.session.unshare.failed.title"),
-                description: language.t("toast.session.unshare.failed.description"),
-                variant: "error",
-              }),
-            )
-        },
-      },
-    ]
-  })
-
-  command.register("session", () =>
-    combineCommandSections([
-      sessionCommands(),
-      fileCommands(),
-      contextCommands(),
-      viewCommands(),
-      messageCommands(),
-      agentCommands(),
-      permissionCommands(),
-      sessionActionCommands(),
-      shareCommands(),
-    ]),
-  )
-
   const handleKeyDown = (event: KeyboardEvent) => {
     const activeElement = document.activeElement as HTMLElement | undefined
     if (activeElement) {
@@ -1465,6 +903,34 @@ export default function Page() {
     setFileTreeTab("all")
   }
 
+  useSessionCommands({
+    command,
+    dialog,
+    file,
+    language,
+    local,
+    permission,
+    prompt,
+    sdk,
+    sync,
+    terminal,
+    layout,
+    params,
+    navigate,
+    tabs,
+    view,
+    info,
+    status,
+    userMessages,
+    visibleUserMessages,
+    activeMessage,
+    showAllFiles,
+    navigateMessageByOffset,
+    setExpanded: (id, fn) => setStore("expanded", id, fn),
+    setActiveMessage,
+    addSelectionToContext,
+  })
+
   const openReviewFile = createOpenReviewFile({
     showAllFiles,
     tabForPath: file.tab,
@@ -1781,11 +1247,6 @@ export default function Page() {
     overflowAnchor: "dynamic",
   })
 
-  const clearMessageHash = () => {
-    if (!window.location.hash) return
-    window.history.replaceState(null, "", window.location.href.replace(/#.*$/, ""))
-  }
-
   let scrollStateFrame: number | undefined
   let scrollStateTarget: HTMLDivElement | undefined
   const scrollSpy = createScrollSpy({
@@ -1975,162 +1436,23 @@ export default function Page() {
     },
   )
 
-  const updateHash = (id: string) => {
-    window.history.replaceState(null, "", `#${anchor(id)}`)
-  }
-
-  createEffect(
-    on(sessionKey, (key) => {
-      if (!params.id) return
-      const messageID = layout.pendingMessage.consume(key)
-      if (!messageID) return
-      setUi("pendingMessage", messageID)
-    }),
-  )
-
-  const scrollToElement = (el: HTMLElement, behavior: ScrollBehavior) => {
-    const root = scroller
-    if (!root) return false
-
-    const a = el.getBoundingClientRect()
-    const b = root.getBoundingClientRect()
-    const top = a.top - b.top + root.scrollTop
-    root.scrollTo({ top, behavior })
-    return true
-  }
-
-  const scrollToMessage = (message: UserMessage, behavior: ScrollBehavior = "smooth") => {
-    setActiveMessage(message)
-
-    const msgs = visibleUserMessages()
-    const index = msgs.findIndex((m) => m.id === message.id)
-    if (index !== -1 && index < store.turnStart) {
-      setStore("turnStart", index)
-      scheduleTurnBackfill()
-
-      requestAnimationFrame(() => {
-        const el = document.getElementById(anchor(message.id))
-        if (!el) {
-          requestAnimationFrame(() => {
-            const next = document.getElementById(anchor(message.id))
-            if (!next) return
-            scrollToElement(next, behavior)
-          })
-          return
-        }
-        scrollToElement(el, behavior)
-      })
-
-      updateHash(message.id)
-      return
-    }
-
-    const el = document.getElementById(anchor(message.id))
-    if (!el) {
-      updateHash(message.id)
-      requestAnimationFrame(() => {
-        const next = document.getElementById(anchor(message.id))
-        if (!next) return
-        if (!scrollToElement(next, behavior)) return
-      })
-      return
-    }
-    if (scrollToElement(el, behavior)) {
-      updateHash(message.id)
-      return
-    }
-
-    requestAnimationFrame(() => {
-      const next = document.getElementById(anchor(message.id))
-      if (!next) return
-      if (!scrollToElement(next, behavior)) return
-    })
-    updateHash(message.id)
-  }
-
-  const applyHash = (behavior: ScrollBehavior) => {
-    const hash = window.location.hash.slice(1)
-    if (!hash) {
-      autoScroll.forceScrollToBottom()
-
-      const el = scroller
-      if (el) scheduleScrollState(el)
-      return
-    }
-
-    const match = hash.match(/^message-(.+)$/)
-    if (match) {
-      autoScroll.pause()
-      const msg = visibleUserMessages().find((m) => m.id === match[1])
-      if (msg) {
-        scrollToMessage(msg, behavior)
-        return
-      }
-
-      // If we have a message hash but the message isn't loaded/rendered yet,
-      // don't fall back to "bottom". We'll retry once messages arrive.
-      return
-    }
-
-    const target = document.getElementById(hash)
-    if (target) {
-      autoScroll.pause()
-      scrollToElement(target, behavior)
-      return
-    }
-
-    autoScroll.forceScrollToBottom()
-
-    const el = scroller
-    if (el) scheduleScrollState(el)
-  }
-
-  createEffect(() => {
-    const sessionID = params.id
-    const ready = messagesReady()
-    if (!sessionID || !ready) return
-
-    requestAnimationFrame(() => {
-      applyHash("auto")
-    })
-  })
-
-  // Retry message navigation once the target message is actually loaded.
-  createEffect(() => {
-    const sessionID = params.id
-    const ready = messagesReady()
-    if (!sessionID || !ready) return
-
-    // dependencies
-    visibleUserMessages().length
-    store.turnStart
-
-    const targetId =
-      ui.pendingMessage ??
-      (() => {
-        const hash = window.location.hash.slice(1)
-        const match = hash.match(/^message-(.+)$/)
-        if (!match) return undefined
-        return match[1]
-      })()
-    if (!targetId) return
-    if (store.messageId === targetId) return
-
-    const msg = visibleUserMessages().find((m) => m.id === targetId)
-    if (!msg) return
-    if (ui.pendingMessage === targetId) setUi("pendingMessage", undefined)
-    autoScroll.pause()
-    requestAnimationFrame(() => scrollToMessage(msg, "auto"))
-  })
-
-  createEffect(() => {
-    const sessionID = params.id
-    const ready = messagesReady()
-    if (!sessionID || !ready) return
-
-    const handler = () => requestAnimationFrame(() => applyHash("auto"))
-    window.addEventListener("hashchange", handler)
-    onCleanup(() => window.removeEventListener("hashchange", handler))
+  const { clearMessageHash, scrollToMessage } = useSessionHashScroll({
+    sessionKey,
+    sessionID: () => params.id,
+    messagesReady,
+    visibleUserMessages,
+    turnStart: () => store.turnStart,
+    currentMessageId: () => store.messageId,
+    pendingMessage: () => ui.pendingMessage,
+    setPendingMessage: (value) => setUi("pendingMessage", value),
+    setActiveMessage,
+    setTurnStart: (value) => setStore("turnStart", value),
+    scheduleTurnBackfill,
+    autoScroll,
+    scroller: () => scroller,
+    anchor,
+    scheduleScrollState,
+    consumePendingMessage: layout.pendingMessage.consume,
   })
 
   createEffect(() => {
@@ -2158,20 +1480,17 @@ export default function Page() {
     if (!terminal.ready()) return
     language.locale()
 
-    const label = (pty: LocalPTY) => {
-      const title = pty.title
-      const number = pty.titleNumber
-      const match = title.match(/^Terminal (\d+)$/)
-      const parsed = match ? Number(match[1]) : undefined
-      const isDefaultTitle = Number.isFinite(number) && number > 0 && Number.isFinite(parsed) && parsed === number
-
-      if (title && !isDefaultTitle) return title
-      if (Number.isFinite(number) && number > 0) return language.t("terminal.title.numbered", { number })
-      if (title) return title
-      return language.t("terminal.title")
-    }
-
-    touch(handoff.terminal, params.dir!, terminal.all().map(label))
+    touch(
+      handoff.terminal,
+      params.dir!,
+      terminal.all().map((pty) =>
+        terminalTabLabel({
+          title: pty.title,
+          titleNumber: pty.titleNumber,
+          t: language.t as (key: string, vars?: Record<string, string | number | boolean>) => string,
+        }),
+      ),
+    )
   })
 
   createEffect(() => {
@@ -2200,34 +1519,14 @@ export default function Page() {
     <div class="relative bg-background-base size-full overflow-hidden flex flex-col">
       <SessionHeader />
       <div class="flex-1 min-h-0 flex flex-col md:flex-row">
-        {/* Mobile tab bar */}
-        <Show when={!isDesktop() && params.id}>
-          <Tabs class="h-auto">
-            <Tabs.List>
-              <Tabs.Trigger
-                value="session"
-                class="w-1/2"
-                classes={{ button: "w-full" }}
-                onClick={() => setStore("mobileTab", "session")}
-              >
-                {language.t("session.tab.session")}
-              </Tabs.Trigger>
-              <Tabs.Trigger
-                value="changes"
-                class="w-1/2 !border-r-0"
-                classes={{ button: "w-full" }}
-                onClick={() => setStore("mobileTab", "changes")}
-              >
-                <Switch>
-                  <Match when={hasReview()}>
-                    {language.t("session.review.filesChanged", { count: reviewCount() })}
-                  </Match>
-                  <Match when={true}>{language.t("session.review.change.other")}</Match>
-                </Switch>
-              </Tabs.Trigger>
-            </Tabs.List>
-          </Tabs>
-        </Show>
+        <SessionMobileTabs
+          open={!isDesktop() && !!params.id}
+          hasReview={hasReview()}
+          reviewCount={reviewCount()}
+          onSession={() => setStore("mobileTab", "session")}
+          onChanges={() => setStore("mobileTab", "changes")}
+          t={language.t as (key: string, vars?: Record<string, string | number | boolean>) => string}
+        />
 
         {/* Session panel */}
         <div
@@ -2245,347 +1544,79 @@ export default function Page() {
             <Switch>
               <Match when={params.id}>
                 <Show when={activeMessage()}>
-                  <Show
-                    when={!mobileChanges()}
-                    fallback={
-                      <div class="relative h-full overflow-hidden">
-                        {reviewContent({
-                          diffStyle: "unified",
-                          classes: {
-                            root: "pb-[calc(var(--prompt-height,8rem)+32px)]",
-                            header: "px-4",
-                            container: "px-4",
-                          },
-                          loadingClass: "px-4 py-4 text-text-weak",
-                          emptyClass: "h-full px-4 pb-30 flex flex-col items-center justify-center text-center gap-6",
-                        })}
-                      </div>
-                    }
-                  >
-                    <div class="relative w-full h-full min-w-0">
-                      <div
-                        class="absolute left-1/2 -translate-x-1/2 bottom-[calc(var(--prompt-height,8rem)+32px)] z-[60] pointer-events-none transition-all duration-200 ease-out"
-                        classList={{
-                          "opacity-100 translate-y-0 scale-100": ui.scroll.overflow && !ui.scroll.bottom,
-                          "opacity-0 translate-y-2 scale-95 pointer-events-none":
-                            !ui.scroll.overflow || ui.scroll.bottom,
-                        }}
-                      >
-                        <button
-                          class="pointer-events-auto size-8 flex items-center justify-center rounded-full bg-background-base border border-border-base shadow-sm text-text-base hover:bg-background-stronger transition-colors"
-                          onClick={resumeScroll}
-                        >
-                          <Icon name="arrow-down-to-line" />
-                        </button>
-                      </div>
-                      <div
-                        ref={setScrollRef}
-                        onWheel={(e) => {
-                          const root = e.currentTarget
-                          const target = e.target instanceof Element ? e.target : undefined
-                          const nested = target?.closest("[data-scrollable]")
-                          if (!nested || nested === root) {
-                            markScrollGesture(root)
-                            return
-                          }
-
-                          if (!(nested instanceof HTMLElement)) {
-                            markScrollGesture(root)
-                            return
-                          }
-
-                          const max = nested.scrollHeight - nested.clientHeight
-                          if (max <= 1) {
-                            markScrollGesture(root)
-                            return
-                          }
-
-                          const delta =
-                            e.deltaMode === 1
-                              ? e.deltaY * 40
-                              : e.deltaMode === 2
-                                ? e.deltaY * root.clientHeight
-                                : e.deltaY
-                          if (!delta) return
-
-                          if (delta < 0) {
-                            if (nested.scrollTop + delta <= 0) markScrollGesture(root)
-                            return
-                          }
-
-                          const remaining = max - nested.scrollTop
-                          if (delta > remaining) markScrollGesture(root)
-                        }}
-                        onTouchStart={(e) => {
-                          touchGesture = e.touches[0]?.clientY
-                        }}
-                        onTouchMove={(e) => {
-                          const next = e.touches[0]?.clientY
-                          const prev = touchGesture
-                          touchGesture = next
-                          if (next === undefined || prev === undefined) return
-
-                          const delta = prev - next
-                          if (!delta) return
-
-                          const root = e.currentTarget
-                          const target = e.target instanceof Element ? e.target : undefined
-                          const nested = target?.closest("[data-scrollable]")
-                          if (!nested || nested === root) {
-                            markScrollGesture(root)
-                            return
-                          }
-
-                          if (!(nested instanceof HTMLElement)) {
-                            markScrollGesture(root)
-                            return
-                          }
-
-                          const max = nested.scrollHeight - nested.clientHeight
-                          if (max <= 1) {
-                            markScrollGesture(root)
-                            return
-                          }
-
-                          if (delta < 0) {
-                            if (nested.scrollTop + delta <= 0) markScrollGesture(root)
-                            return
-                          }
-
-                          const remaining = max - nested.scrollTop
-                          if (delta > remaining) markScrollGesture(root)
-                        }}
-                        onTouchEnd={() => {
-                          touchGesture = undefined
-                        }}
-                        onTouchCancel={() => {
-                          touchGesture = undefined
-                        }}
-                        onPointerDown={(e) => {
-                          if (e.target !== e.currentTarget) return
-                          markScrollGesture(e.currentTarget)
-                        }}
-                        onScroll={(e) => {
-                          scheduleScrollState(e.currentTarget)
-                          if (!hasScrollGesture()) return
-                          autoScroll.handleScroll()
-                          markScrollGesture(e.currentTarget)
-                          if (isDesktop()) scrollSpy.onScroll()
-                        }}
-                        onClick={autoScroll.handleInteraction}
-                        class="relative min-w-0 w-full h-full overflow-y-auto session-scroller"
-                        style={{ "--session-title-height": info()?.title || info()?.parentID ? "40px" : "0px" }}
-                      >
-                        <Show when={info()?.title || info()?.parentID}>
-                          <div
-                            classList={{
-                              "sticky top-0 z-30 bg-background-stronger": true,
-                              "w-full": true,
-                              "px-4 md:px-6": true,
-                              "md:max-w-200 md:mx-auto 3xl:max-w-[1200px]": centered(),
-                            }}
-                          >
-                            <div class="h-10 w-full flex items-center justify-between gap-2">
-                              <div class="flex items-center gap-1 min-w-0 flex-1">
-                                <Show when={info()?.parentID}>
-                                  <IconButton
-                                    tabIndex={-1}
-                                    icon="arrow-left"
-                                    variant="ghost"
-                                    onClick={() => {
-                                      navigate(`/${params.dir}/session/${info()?.parentID}`)
-                                    }}
-                                    aria-label={language.t("common.goBack")}
-                                  />
-                                </Show>
-                                <Show when={info()?.title || title.editing}>
-                                  <Show
-                                    when={title.editing}
-                                    fallback={
-                                      <h1
-                                        class="text-16-medium text-text-strong truncate min-w-0"
-                                        onDblClick={openTitleEditor}
-                                      >
-                                        {info()?.title}
-                                      </h1>
-                                    }
-                                  >
-                                    <InlineInput
-                                      ref={(el) => {
-                                        titleRef = el
-                                      }}
-                                      value={title.draft}
-                                      disabled={title.saving}
-                                      class="text-16-medium text-text-strong grow-1 min-w-0"
-                                      onInput={(event) => setTitle("draft", event.currentTarget.value)}
-                                      onKeyDown={(event) => {
-                                        event.stopPropagation()
-                                        if (event.key === "Enter") {
-                                          event.preventDefault()
-                                          void saveTitleEditor()
-                                          return
-                                        }
-                                        if (event.key === "Escape") {
-                                          event.preventDefault()
-                                          closeTitleEditor()
-                                        }
-                                      }}
-                                      onBlur={() => closeTitleEditor()}
-                                    />
-                                  </Show>
-                                </Show>
-                              </div>
-                              <Show when={params.id}>
-                                {(id) => (
-                                  <div class="shrink-0 flex items-center">
-                                    <DropdownMenu
-                                      open={title.menuOpen}
-                                      onOpenChange={(open) => setTitle("menuOpen", open)}
-                                    >
-                                      <Tooltip value={language.t("common.moreOptions")} placement="top">
-                                        <DropdownMenu.Trigger
-                                          as={IconButton}
-                                          icon="dot-grid"
-                                          variant="ghost"
-                                          class="size-6 rounded-md data-[expanded]:bg-surface-base-active"
-                                          aria-label={language.t("common.moreOptions")}
-                                        />
-                                      </Tooltip>
-                                      <DropdownMenu.Portal>
-                                        <DropdownMenu.Content
-                                          onCloseAutoFocus={(event) => {
-                                            if (!title.pendingRename) return
-                                            event.preventDefault()
-                                            setTitle("pendingRename", false)
-                                            openTitleEditor()
-                                          }}
-                                        >
-                                          <DropdownMenu.Item
-                                            onSelect={() => {
-                                              setTitle({ pendingRename: true, menuOpen: false })
-                                            }}
-                                          >
-                                            <DropdownMenu.ItemLabel>
-                                              {language.t("common.rename")}
-                                            </DropdownMenu.ItemLabel>
-                                          </DropdownMenu.Item>
-                                          <DropdownMenu.Item onSelect={() => void archiveSession(id())}>
-                                            <DropdownMenu.ItemLabel>
-                                              {language.t("common.archive")}
-                                            </DropdownMenu.ItemLabel>
-                                          </DropdownMenu.Item>
-                                          <DropdownMenu.Separator />
-                                          <DropdownMenu.Item
-                                            onSelect={() => dialog.show(() => <DialogDeleteSession sessionID={id()} />)}
-                                          >
-                                            <DropdownMenu.ItemLabel>
-                                              {language.t("common.delete")}
-                                            </DropdownMenu.ItemLabel>
-                                          </DropdownMenu.Item>
-                                        </DropdownMenu.Content>
-                                      </DropdownMenu.Portal>
-                                    </DropdownMenu>
-                                  </div>
-                                )}
-                              </Show>
-                            </div>
-                          </div>
-                        </Show>
-
-                        <div
-                          ref={(el) => {
-                            content = el
-                            autoScroll.contentRef(el)
-
-                            const root = scroller
-                            if (root) scheduleScrollState(root)
-                          }}
-                          role="log"
-                          class="flex flex-col gap-12 items-start justify-start pb-[calc(var(--prompt-height,8rem)+64px)] md:pb-[calc(var(--prompt-height,10rem)+64px)] transition-[margin]"
-                          classList={{
-                            "w-full": true,
-                            "md:max-w-200 md:mx-auto 3xl:max-w-[1200px]": centered(),
-                            "mt-0.5": centered(),
-                            "mt-0": !centered(),
-                          }}
-                        >
-                          <Show when={store.turnStart > 0}>
-                            <div class="w-full flex justify-center">
-                              <Button
-                                variant="ghost"
-                                size="large"
-                                class="text-12-medium opacity-50"
-                                onClick={() => setStore("turnStart", 0)}
-                              >
-                                {language.t("session.messages.renderEarlier")}
-                              </Button>
-                            </div>
-                          </Show>
-                          <Show when={historyMore()}>
-                            <div class="w-full flex justify-center">
-                              <Button
-                                variant="ghost"
-                                size="large"
-                                class="text-12-medium opacity-50"
-                                disabled={historyLoading()}
-                                onClick={() => {
-                                  const id = params.id
-                                  if (!id) return
-                                  setStore("turnStart", 0)
-                                  sync.session.history.loadMore(id)
-                                }}
-                              >
-                                {historyLoading()
-                                  ? language.t("session.messages.loadingEarlier")
-                                  : language.t("session.messages.loadEarlier")}
-                              </Button>
-                            </div>
-                          </Show>
-                          <For each={renderedUserMessages()}>
-                            {(message) => {
-                              if (import.meta.env.DEV) {
-                                onMount(() => {
-                                  const id = params.id
-                                  if (!id) return
-                                  navMark({ dir: params.dir, to: id, name: "session:first-turn-mounted" })
-                                })
-                              }
-
-                              return (
-                                <div
-                                  id={anchor(message.id)}
-                                  data-message-id={message.id}
-                                  ref={(el) => {
-                                    scrollSpy.register(el, message.id)
-                                    onCleanup(() => scrollSpy.unregister(message.id))
-                                  }}
-                                  classList={{
-                                    "min-w-0 w-full max-w-full": true,
-                                    "md:max-w-200 3xl:max-w-[1200px]": centered(),
-                                  }}
-                                >
-                                  <SessionTurn
-                                    sessionID={params.id!}
-                                    messageID={message.id}
-                                    lastUserMessageID={lastUserMessage()?.id}
-                                    stepsExpanded={store.expanded[message.id] ?? false}
-                                    onStepsExpandedToggle={() =>
-                                      setStore("expanded", message.id, (open: boolean | undefined) => !open)
-                                    }
-                                    classes={{
-                                      root: "min-w-0 w-full relative",
-                                      content: "flex flex-col justify-between !overflow-visible",
-                                      container: "w-full px-4 md:px-6",
-                                    }}
-                                  />
-                                </div>
-                              )
-                            }}
-                          </For>
-                        </div>
-                      </div>
-                    </div>
-                  </Show>
+                  <MessageTimeline
+                    mobileChanges={mobileChanges()}
+                    mobileFallback={reviewContent({
+                      diffStyle: "unified",
+                      classes: {
+                        root: "pb-[calc(var(--prompt-height,8rem)+32px)]",
+                        header: "px-4",
+                        container: "px-4",
+                      },
+                      loadingClass: "px-4 py-4 text-text-weak",
+                      emptyClass: "h-full px-4 pb-30 flex flex-col items-center justify-center text-center gap-6",
+                    })}
+                    scroll={ui.scroll}
+                    onResumeScroll={resumeScroll}
+                    setScrollRef={setScrollRef}
+                    onScheduleScrollState={scheduleScrollState}
+                    onAutoScrollHandleScroll={autoScroll.handleScroll}
+                    onMarkScrollGesture={markScrollGesture}
+                    hasScrollGesture={hasScrollGesture}
+                    isDesktop={isDesktop()}
+                    onScrollSpyScroll={scrollSpy.onScroll}
+                    onAutoScrollInteraction={autoScroll.handleInteraction}
+                    showHeader={!!(info()?.title || info()?.parentID)}
+                    centered={centered()}
+                    title={info()?.title}
+                    parentID={info()?.parentID}
+                    openTitleEditor={openTitleEditor}
+                    closeTitleEditor={closeTitleEditor}
+                    saveTitleEditor={saveTitleEditor}
+                    titleRef={(el) => {
+                      titleRef = el
+                    }}
+                    titleState={title}
+                    onTitleDraft={(value) => setTitle("draft", value)}
+                    onTitleMenuOpen={(open) => setTitle("menuOpen", open)}
+                    onTitlePendingRename={(value) => setTitle("pendingRename", value)}
+                    onNavigateParent={() => {
+                      navigate(`/${params.dir}/session/${info()?.parentID}`)
+                    }}
+                    sessionID={params.id!}
+                    onArchiveSession={(sessionID) => void archiveSession(sessionID)}
+                    onDeleteSession={(sessionID) => dialog.show(() => <DialogDeleteSession sessionID={sessionID} />)}
+                    t={language.t as (key: string, vars?: Record<string, string | number | boolean>) => string}
+                    setContentRef={(el) => {
+                      content = el
+                      autoScroll.contentRef(el)
+
+                      const root = scroller
+                      if (root) scheduleScrollState(root)
+                    }}
+                    turnStart={store.turnStart}
+                    onRenderEarlier={() => setStore("turnStart", 0)}
+                    historyMore={historyMore()}
+                    historyLoading={historyLoading()}
+                    onLoadEarlier={() => {
+                      const id = params.id
+                      if (!id) return
+                      setStore("turnStart", 0)
+                      sync.session.history.loadMore(id)
+                    }}
+                    renderedUserMessages={renderedUserMessages()}
+                    anchor={anchor}
+                    onRegisterMessage={scrollSpy.register}
+                    onUnregisterMessage={scrollSpy.unregister}
+                    onFirstTurnMount={() => {
+                      const id = params.id
+                      if (!id) return
+                      navMark({ dir: params.dir, to: id, name: "session:first-turn-mounted" })
+                    }}
+                    lastUserMessageID={lastUserMessage()?.id}
+                    expanded={store.expanded}
+                    onToggleExpanded={(id) => setStore("expanded", id, (open: boolean | undefined) => !open)}
+                  />
                 </Show>
               </Match>
               <Match when={true}>
@@ -2610,115 +1641,27 @@ export default function Page() {
             </Switch>
           </div>
 
-          {/* Prompt input */}
-          <div
-            ref={(el) => (promptDock = el)}
-            class="absolute inset-x-0 bottom-0 pt-12 pb-4 flex flex-col justify-center items-center z-50 bg-gradient-to-t from-background-stronger via-background-stronger to-transparent pointer-events-none"
-          >
-            <div
-              classList={{
-                "w-full px-4 pointer-events-auto": true,
-                "md:max-w-200 md:mx-auto 3xl:max-w-[1200px]": centered(),
-              }}
-            >
-              <Show when={questionRequest()} keyed>
-                {(req) => {
-                  const count = req.questions.length
-                  const subtitle =
-                    count === 0
-                      ? ""
-                      : `${count} ${language.t(count > 1 ? "ui.common.question.other" : "ui.common.question.one")}`
-                  return (
-                    <div data-component="tool-part-wrapper" data-question="true" class="mb-3">
-                      <BasicTool
-                        icon="bubble-5"
-                        locked
-                        defaultOpen
-                        trigger={{
-                          title: language.t("ui.tool.questions"),
-                          subtitle,
-                        }}
-                      />
-                      <QuestionDock request={req} />
-                    </div>
-                  )
-                }}
-              </Show>
-
-              <Show when={permRequest()} keyed>
-                {(perm) => (
-                  <div data-component="tool-part-wrapper" data-permission="true" class="mb-3">
-                    <BasicTool
-                      icon="checklist"
-                      locked
-                      defaultOpen
-                      trigger={{
-                        title: language.t("notification.permission.title"),
-                        subtitle:
-                          perm.permission === "doom_loop"
-                            ? language.t("settings.permissions.tool.doom_loop.title")
-                            : perm.permission,
-                      }}
-                    >
-                      <Show when={perm.patterns.length > 0}>
-                        <div class="flex flex-col gap-1 py-2 px-3 max-h-40 overflow-y-auto no-scrollbar">
-                          <For each={perm.patterns}>
-                            {(pattern) => <code class="text-12-regular text-text-base break-all">{pattern}</code>}
-                          </For>
-                        </div>
-                      </Show>
-                      <Show when={perm.permission === "doom_loop"}>
-                        <div class="text-12-regular text-text-weak pb-2 px-3">
-                          {language.t("settings.permissions.tool.doom_loop.description")}
-                        </div>
-                      </Show>
-                    </BasicTool>
-                    <div data-component="permission-prompt">
-                      <div data-slot="permission-actions">
-                        <Button variant="ghost" size="small" onClick={() => decide("reject")} disabled={ui.responding}>
-                          {language.t("ui.permission.deny")}
-                        </Button>
-                        <Button
-                          variant="secondary"
-                          size="small"
-                          onClick={() => decide("always")}
-                          disabled={ui.responding}
-                        >
-                          {language.t("ui.permission.allowAlways")}
-                        </Button>
-                        <Button variant="primary" size="small" onClick={() => decide("once")} disabled={ui.responding}>
-                          {language.t("ui.permission.allowOnce")}
-                        </Button>
-                      </div>
-                    </div>
-                  </div>
-                )}
-              </Show>
-
-              <Show when={!blocked()}>
-                <Show
-                  when={prompt.ready()}
-                  fallback={
-                    <div class="w-full min-h-32 md:min-h-40 rounded-md border border-border-weak-base bg-background-base/50 px-4 py-3 text-text-weak whitespace-pre-wrap pointer-events-none">
-                      {handoff.session.get(sessionKey())?.prompt || language.t("prompt.loading")}
-                    </div>
-                  }
-                >
-                  <PromptInput
-                    ref={(el) => {
-                      inputRef = el
-                    }}
-                    newSessionWorktree={newSessionWorktree()}
-                    onNewSessionWorktreeReset={() => setStore("newSessionWorktree", "main")}
-                    onSubmit={() => {
-                      comments.clear()
-                      resumeScroll()
-                    }}
-                  />
-                </Show>
-              </Show>
-            </div>
-          </div>
+          <SessionPromptDock
+            centered={centered()}
+            questionRequest={questionRequest}
+            permissionRequest={permRequest}
+            blocked={blocked()}
+            promptReady={prompt.ready()}
+            handoffPrompt={handoff.session.get(sessionKey())?.prompt}
+            t={language.t as (key: string, vars?: Record<string, string | number | boolean>) => string}
+            responding={ui.responding}
+            onDecide={decide}
+            inputRef={(el) => {
+              inputRef = el
+            }}
+            newSessionWorktree={newSessionWorktree()}
+            onNewSessionWorktreeReset={() => setStore("newSessionWorktree", "main")}
+            onSubmit={() => {
+              comments.clear()
+              resumeScroll()
+            }}
+            setPromptDockRef={(el) => (promptDock = el)}
+          />
 
           <Show when={isDesktop() && view().reviewPanel.opened()}>
             <ResizeHandle
@@ -2731,925 +1674,62 @@ export default function Page() {
           </Show>
         </div>
 
-        {/* Desktop side panel - hidden on mobile */}
-        <Show when={isDesktop() && view().reviewPanel.opened()}>
-          <aside
-            id="review-panel"
-            aria-label={language.t("session.panel.reviewAndFiles")}
-            class="relative flex-1 min-w-0 h-full border-l border-border-weak-base flex"
-          >
-            <div class="flex-1 min-w-0 h-full">
-              <Show
-                when={layout.fileTree.opened() && fileTreeTab() === "changes"}
-                fallback={
-                  <DragDropProvider
-                    onDragStart={handleDragStart}
-                    onDragEnd={handleDragEnd}
-                    onDragOver={handleDragOver}
-                    collisionDetector={closestCenter}
-                  >
-                    <DragDropSensors />
-                    <ConstrainDragYAxis />
-                    <Tabs value={activeTab()} onChange={openTab}>
-                      <div class="sticky top-0 shrink-0 flex">
-                        <Tabs.List
-                          ref={(el: HTMLDivElement) => {
-                            let scrollTimeout: number | undefined
-                            let prevScrollWidth = el.scrollWidth
-                            let prevContextOpen = contextOpen()
-
-                            const handler = () => {
-                              if (scrollTimeout !== undefined) clearTimeout(scrollTimeout)
-                              scrollTimeout = window.setTimeout(() => {
-                                const scrollWidth = el.scrollWidth
-                                const clientWidth = el.clientWidth
-                                const currentContextOpen = contextOpen()
-
-                                // Only scroll when a tab is added (width increased), not on removal
-                                if (scrollWidth > prevScrollWidth) {
-                                  if (!prevContextOpen && currentContextOpen) {
-                                    // Context tab was opened, scroll to first
-                                    el.scrollTo({
-                                      left: 0,
-                                      behavior: "smooth",
-                                    })
-                                  } else if (scrollWidth > clientWidth) {
-                                    // File tab was added, scroll to rightmost
-                                    el.scrollTo({
-                                      left: scrollWidth - clientWidth,
-                                      behavior: "smooth",
-                                    })
-                                  }
-                                }
-                                // When width decreases (tab removed), don't scroll - let browser handle it naturally
-
-                                prevScrollWidth = scrollWidth
-                                prevContextOpen = currentContextOpen
-                              }, 0)
-                            }
-
-                            const wheelHandler = (e: WheelEvent) => {
-                              // Enable horizontal scrolling with mouse wheel
-                              if (Math.abs(e.deltaY) > Math.abs(e.deltaX)) {
-                                el.scrollLeft += e.deltaY > 0 ? 50 : -50
-                                e.preventDefault()
-                              }
-                            }
-
-                            el.addEventListener("wheel", wheelHandler, { passive: false })
-
-                            const observer = new MutationObserver(handler)
-                            observer.observe(el, { childList: true })
-
-                            onCleanup(() => {
-                              el.removeEventListener("wheel", wheelHandler)
-                              observer.disconnect()
-                              if (scrollTimeout !== undefined) clearTimeout(scrollTimeout)
-                            })
-                          }}
-                        >
-                          <Show when={reviewTab()}>
-                            <Tabs.Trigger value="review" classes={{ button: "!pl-6" }}>
-                              <div class="flex items-center gap-1.5">
-                                <div>{language.t("session.tab.review")}</div>
-                                <Show when={hasReview()}>
-                                  <div class="text-12-medium text-text-strong h-4 px-2 flex flex-col items-center justify-center rounded-full bg-surface-base">
-                                    {reviewCount()}
-                                  </div>
-                                </Show>
-                              </div>
-                            </Tabs.Trigger>
-                          </Show>
-                          <Show when={contextOpen()}>
-                            <Tabs.Trigger
-                              value="context"
-                              closeButton={
-                                <Tooltip value={language.t("common.closeTab")} placement="bottom">
-                                  <IconButton
-                                    icon="close-small"
-                                    variant="ghost"
-                                    class="h-5 w-5"
-                                    onClick={() => tabs().close("context")}
-                                    aria-label={language.t("common.closeTab")}
-                                  />
-                                </Tooltip>
-                              }
-                              hideCloseButton
-                              onMiddleClick={() => tabs().close("context")}
-                            >
-                              <div class="flex items-center gap-2">
-                                <SessionContextUsage variant="indicator" />
-                                <div>{language.t("session.tab.context")}</div>
-                              </div>
-                            </Tabs.Trigger>
-                          </Show>
-                          <SortableProvider ids={openedTabs()}>
-                            <For each={openedTabs()}>
-                              {(tab) => <SortableTab tab={tab} onTabClose={tabs().close} />}
-                            </For>
-                          </SortableProvider>
-                          <StickyAddButton>
-                            <TooltipKeybind
-                              title={language.t("command.file.open")}
-                              keybind={command.keybind("file.open")}
-                              class="flex items-center"
-                            >
-                              <IconButton
-                                icon="plus-small"
-                                variant="ghost"
-                                iconSize="large"
-                                onClick={() =>
-                                  dialog.show(() => <DialogSelectFile mode="files" onOpenFile={() => showAllFiles()} />)
-                                }
-                                aria-label={language.t("command.file.open")}
-                              />
-                            </TooltipKeybind>
-                          </StickyAddButton>
-                        </Tabs.List>
-                      </div>
-
-                      <Show when={reviewTab()}>
-                        <Tabs.Content value="review" class="flex flex-col h-full overflow-hidden contain-strict">
-                          <Show when={activeTab() === "review"}>{reviewPanel()}</Show>
-                        </Tabs.Content>
-                      </Show>
-
-                      <Tabs.Content value="empty" class="flex flex-col h-full overflow-hidden contain-strict">
-                        <Show when={activeTab() === "empty"}>
-                          <div class="relative pt-2 flex-1 min-h-0 overflow-hidden">
-                            <div class="h-full px-6 pb-42 flex flex-col items-center justify-center text-center gap-6">
-                              <Mark class="w-14 opacity-10" />
-                              <div class="text-14-regular text-text-weak max-w-56">
-                                {language.t("session.files.selectToOpen")}
-                              </div>
-                            </div>
-                          </div>
-                        </Show>
-                      </Tabs.Content>
-
-                      <Show when={contextOpen()}>
-                        <Tabs.Content value="context" class="flex flex-col h-full overflow-hidden contain-strict">
-                          <Show when={activeTab() === "context"}>
-                            <div class="relative pt-2 flex-1 min-h-0 overflow-hidden">
-                              <SessionContextTab
-                                messages={messages}
-                                visibleUserMessages={visibleUserMessages}
-                                view={view}
-                                info={info}
-                              />
-                            </div>
-                          </Show>
-                        </Tabs.Content>
-                      </Show>
-
-                      <Show when={activeFileTab()} keyed>
-                        {(tab) => {
-                          let scroll: HTMLDivElement | undefined
-                          let scrollFrame: number | undefined
-                          let pending: { x: number; y: number } | undefined
-                          let codeScroll: HTMLElement[] = []
-
-                          const path = createMemo(() => file.pathFromTab(tab))
-                          const state = createMemo(() => {
-                            const p = path()
-                            if (!p) return
-                            return file.get(p)
-                          })
-                          const contents = createMemo(() => state()?.content?.content ?? "")
-                          const cacheKey = createMemo(() => checksum(contents()))
-                          const isImage = createMemo(() => {
-                            const c = state()?.content
-                            return (
-                              c?.encoding === "base64" &&
-                              c?.mimeType?.startsWith("image/") &&
-                              c?.mimeType !== "image/svg+xml"
-                            )
-                          })
-                          const isSvg = createMemo(() => {
-                            const c = state()?.content
-                            return c?.mimeType === "image/svg+xml"
-                          })
-                          const isBinary = createMemo(() => state()?.content?.type === "binary")
-                          const svgContent = createMemo(() => {
-                            if (!isSvg()) return
-                            const c = state()?.content
-                            if (!c) return
-                            if (c.encoding !== "base64") return c.content
-                            return decode64(c.content)
-                          })
-
-                          const svgDecodeFailed = createMemo(() => {
-                            if (!isSvg()) return false
-                            const c = state()?.content
-                            if (!c) return false
-                            if (c.encoding !== "base64") return false
-                            return svgContent() === undefined
-                          })
-
-                          const svgToast = { shown: false }
-                          createEffect(() => {
-                            if (!svgDecodeFailed()) return
-                            if (svgToast.shown) return
-                            svgToast.shown = true
-                            showToast({
-                              variant: "error",
-                              title: language.t("toast.file.loadFailed.title"),
-                              description: "Invalid base64 content.",
-                            })
-                          })
-                          const svgPreviewUrl = createMemo(() => {
-                            if (!isSvg()) return
-                            const c = state()?.content
-                            if (!c) return
-                            if (c.encoding === "base64") return `data:image/svg+xml;base64,${c.content}`
-                            return `data:image/svg+xml;charset=utf-8,${encodeURIComponent(c.content)}`
-                          })
-                          const imageDataUrl = createMemo(() => {
-                            if (!isImage()) return
-                            const c = state()?.content
-                            return `data:${c?.mimeType};base64,${c?.content}`
-                          })
-                          const selectedLines = createMemo(() => {
-                            const p = path()
-                            if (!p) return null
-                            if (file.ready()) return file.selectedLines(p) ?? null
-                            return handoff.session.get(sessionKey())?.files[p] ?? null
-                          })
-
-                          let wrap: HTMLDivElement | undefined
-
-                          const fileComments = createMemo(() => {
-                            const p = path()
-                            if (!p) return []
-                            return comments.list(p)
-                          })
-
-                          const commentedLines = createMemo(() => fileComments().map((comment) => comment.selection))
-
-                          const [note, setNote] = createStore({
-                            openedComment: null as string | null,
-                            commenting: null as SelectedLineRange | null,
-                            draft: "",
-                            positions: {} as Record<string, number>,
-                            draftTop: undefined as number | undefined,
-                          })
-
-                          const openedComment = () => note.openedComment
-                          const setOpenedComment = (
-                            value:
-                              | typeof note.openedComment
-                              | ((value: typeof note.openedComment) => typeof note.openedComment),
-                          ) => setNote("openedComment", value)
-
-                          const commenting = () => note.commenting
-                          const setCommenting = (
-                            value: typeof note.commenting | ((value: typeof note.commenting) => typeof note.commenting),
-                          ) => setNote("commenting", value)
-
-                          const draft = () => note.draft
-                          const setDraft = (
-                            value: typeof note.draft | ((value: typeof note.draft) => typeof note.draft),
-                          ) => setNote("draft", value)
-
-                          const positions = () => note.positions
-                          const setPositions = (
-                            value: typeof note.positions | ((value: typeof note.positions) => typeof note.positions),
-                          ) => setNote("positions", value)
-
-                          const draftTop = () => note.draftTop
-                          const setDraftTop = (
-                            value: typeof note.draftTop | ((value: typeof note.draftTop) => typeof note.draftTop),
-                          ) => setNote("draftTop", value)
-
-                          const commentLabel = (range: SelectedLineRange) => {
-                            const start = Math.min(range.start, range.end)
-                            const end = Math.max(range.start, range.end)
-                            if (start === end) return `line ${start}`
-                            return `lines ${start}-${end}`
-                          }
-
-                          const getRoot = () => {
-                            const el = wrap
-                            if (!el) return
-
-                            const host = el.querySelector("diffs-container")
-                            if (!(host instanceof HTMLElement)) return
-
-                            const root = host.shadowRoot
-                            if (!root) return
-
-                            return root
-                          }
-
-                          const findMarker = (root: ShadowRoot, range: SelectedLineRange) => {
-                            const line = Math.max(range.start, range.end)
-                            const node = root.querySelector(`[data-line="${line}"]`)
-                            if (!(node instanceof HTMLElement)) return
-                            return node
-                          }
-
-                          const markerTop = (wrapper: HTMLElement, marker: HTMLElement) => {
-                            const wrapperRect = wrapper.getBoundingClientRect()
-                            const rect = marker.getBoundingClientRect()
-                            return rect.top - wrapperRect.top + Math.max(0, (rect.height - 20) / 2)
-                          }
-
-                          const updateComments = () => {
-                            const el = wrap
-                            const root = getRoot()
-                            if (!el || !root) {
-                              setPositions({})
-                              setDraftTop(undefined)
-                              return
-                            }
-
-                            const next: Record<string, number> = {}
-                            for (const comment of fileComments()) {
-                              const marker = findMarker(root, comment.selection)
-                              if (!marker) continue
-                              next[comment.id] = markerTop(el, marker)
-                            }
-
-                            setPositions(next)
-
-                            const range = commenting()
-                            if (!range) {
-                              setDraftTop(undefined)
-                              return
-                            }
-
-                            const marker = findMarker(root, range)
-                            if (!marker) {
-                              setDraftTop(undefined)
-                              return
-                            }
-
-                            setDraftTop(markerTop(el, marker))
-                          }
-
-                          const scheduleComments = () => {
-                            requestAnimationFrame(updateComments)
-                          }
-
-                          createEffect(() => {
-                            fileComments()
-                            scheduleComments()
-                          })
-
-                          createEffect(() => {
-                            const range = commenting()
-                            scheduleComments()
-                            if (!range) return
-                            setDraft("")
-                          })
-
-                          createEffect(() => {
-                            const focus = comments.focus()
-                            const p = path()
-                            if (!focus || !p) return
-                            if (focus.file !== p) return
-                            if (activeTab() !== tab) return
-
-                            const target = fileComments().find((comment) => comment.id === focus.id)
-                            if (!target) return
-
-                            setOpenedComment(target.id)
-                            setCommenting(null)
-                            file.setSelectedLines(p, target.selection)
-                            requestAnimationFrame(() => comments.clearFocus())
-                          })
-
-                          const renderCode = (source: string, wrapperClass: string) => (
-                            <div
-                              ref={(el) => {
-                                wrap = el
-                                scheduleComments()
-                              }}
-                              class={`relative overflow-hidden ${wrapperClass}`}
-                            >
-                              <Dynamic
-                                component={codeComponent}
-                                file={{
-                                  name: path() ?? "",
-                                  contents: source,
-                                  cacheKey: cacheKey(),
-                                }}
-                                enableLineSelection
-                                selectedLines={selectedLines()}
-                                commentedLines={commentedLines()}
-                                onRendered={() => {
-                                  requestAnimationFrame(restoreScroll)
-                                  requestAnimationFrame(scheduleComments)
-                                }}
-                                onLineSelected={(range: SelectedLineRange | null) => {
-                                  const p = path()
-                                  if (!p) return
-                                  file.setSelectedLines(p, range)
-                                  if (!range) setCommenting(null)
-                                }}
-                                onLineSelectionEnd={(range: SelectedLineRange | null) => {
-                                  if (!range) {
-                                    setCommenting(null)
-                                    return
-                                  }
-
-                                  setOpenedComment(null)
-                                  setCommenting(range)
-                                }}
-                                overflow="scroll"
-                                class="select-text"
-                              />
-                              <For each={fileComments()}>
-                                {(comment) => (
-                                  <LineCommentView
-                                    id={comment.id}
-                                    top={positions()[comment.id]}
-                                    open={openedComment() === comment.id}
-                                    comment={comment.comment}
-                                    selection={commentLabel(comment.selection)}
-                                    onMouseEnter={() => {
-                                      const p = path()
-                                      if (!p) return
-                                      file.setSelectedLines(p, comment.selection)
-                                    }}
-                                    onClick={() => {
-                                      const p = path()
-                                      if (!p) return
-                                      setCommenting(null)
-                                      setOpenedComment((current) => (current === comment.id ? null : comment.id))
-                                      file.setSelectedLines(p, comment.selection)
-                                    }}
-                                  />
-                                )}
-                              </For>
-                              <Show when={commenting()}>
-                                {(range) => (
-                                  <Show when={draftTop() !== undefined}>
-                                    <LineCommentEditor
-                                      top={draftTop()}
-                                      value={draft()}
-                                      selection={commentLabel(range())}
-                                      onInput={(value) => setDraft(value)}
-                                      onCancel={() => setCommenting(null)}
-                                      onSubmit={(value) => {
-                                        const p = path()
-                                        if (!p) return
-                                        addCommentToContext({
-                                          file: p,
-                                          selection: range(),
-                                          comment: value,
-                                          origin: "file",
-                                        })
-                                        setCommenting(null)
-                                      }}
-                                      onPopoverFocusOut={(e: FocusEvent) => {
-                                        const current = e.currentTarget as HTMLDivElement
-                                        const target = e.relatedTarget
-                                        if (target instanceof Node && current.contains(target)) return
-
-                                        setTimeout(() => {
-                                          if (!document.activeElement || !current.contains(document.activeElement)) {
-                                            setCommenting(null)
-                                          }
-                                        }, 0)
-                                      }}
-                                    />
-                                  </Show>
-                                )}
-                              </Show>
-                            </div>
-                          )
-
-                          const getCodeScroll = () => {
-                            const el = scroll
-                            if (!el) return []
-
-                            const host = el.querySelector("diffs-container")
-                            if (!(host instanceof HTMLElement)) return []
-
-                            const root = host.shadowRoot
-                            if (!root) return []
-
-                            return Array.from(root.querySelectorAll("[data-code]")).filter(
-                              (node): node is HTMLElement => node instanceof HTMLElement && node.clientWidth > 0,
-                            )
-                          }
-
-                          const queueScrollUpdate = (next: { x: number; y: number }) => {
-                            pending = next
-                            if (scrollFrame !== undefined) return
-
-                            scrollFrame = requestAnimationFrame(() => {
-                              scrollFrame = undefined
-
-                              const next = pending
-                              pending = undefined
-                              if (!next) return
-
-                              view().setScroll(tab, next)
-                            })
-                          }
-
-                          const handleCodeScroll = (event: Event) => {
-                            const el = scroll
-                            if (!el) return
-
-                            const target = event.currentTarget
-                            if (!(target instanceof HTMLElement)) return
-
-                            queueScrollUpdate({
-                              x: target.scrollLeft,
-                              y: el.scrollTop,
-                            })
-                          }
-
-                          const syncCodeScroll = () => {
-                            const next = getCodeScroll()
-                            if (next.length === codeScroll.length && next.every((el, i) => el === codeScroll[i])) return
-
-                            for (const item of codeScroll) {
-                              item.removeEventListener("scroll", handleCodeScroll)
-                            }
-
-                            codeScroll = next
-
-                            for (const item of codeScroll) {
-                              item.addEventListener("scroll", handleCodeScroll)
-                            }
-                          }
-
-                          const restoreScroll = () => {
-                            const el = scroll
-                            if (!el) return
-
-                            const s = view()?.scroll(tab)
-                            if (!s) return
-
-                            syncCodeScroll()
-
-                            if (codeScroll.length > 0) {
-                              for (const item of codeScroll) {
-                                if (item.scrollLeft !== s.x) item.scrollLeft = s.x
-                              }
-                            }
-
-                            if (el.scrollTop !== s.y) el.scrollTop = s.y
-
-                            if (codeScroll.length > 0) return
-
-                            if (el.scrollLeft !== s.x) el.scrollLeft = s.x
-                          }
-
-                          const handleScroll = (event: Event & { currentTarget: HTMLDivElement }) => {
-                            if (codeScroll.length === 0) syncCodeScroll()
-
-                            queueScrollUpdate({
-                              x: codeScroll[0]?.scrollLeft ?? event.currentTarget.scrollLeft,
-                              y: event.currentTarget.scrollTop,
-                            })
-                          }
-
-                          createEffect(
-                            on(
-                              () => state()?.loaded,
-                              (loaded) => {
-                                if (!loaded) return
-                                requestAnimationFrame(restoreScroll)
-                              },
-                              { defer: true },
-                            ),
-                          )
-
-                          createEffect(
-                            on(
-                              () => file.ready(),
-                              (ready) => {
-                                if (!ready) return
-                                requestAnimationFrame(restoreScroll)
-                              },
-                              { defer: true },
-                            ),
-                          )
-
-                          createEffect(
-                            on(
-                              () => tabs().active() === tab,
-                              (active) => {
-                                if (!active) return
-                                if (!state()?.loaded) return
-                                requestAnimationFrame(restoreScroll)
-                              },
-                            ),
-                          )
-
-                          onCleanup(() => {
-                            for (const item of codeScroll) {
-                              item.removeEventListener("scroll", handleCodeScroll)
-                            }
-
-                            if (scrollFrame === undefined) return
-                            cancelAnimationFrame(scrollFrame)
-                          })
-
-                          return (
-                            <Tabs.Content
-                              value={tab}
-                              class="mt-3 relative"
-                              ref={(el: HTMLDivElement) => {
-                                scroll = el
-                                restoreScroll()
-                              }}
-                              onScroll={handleScroll}
-                            >
-                              <Switch>
-                                <Match when={state()?.loaded && isImage()}>
-                                  <div class="px-6 py-4 pb-40">
-                                    <img
-                                      src={imageDataUrl()}
-                                      alt={path()}
-                                      class="max-w-full"
-                                      onLoad={() => requestAnimationFrame(restoreScroll)}
-                                    />
-                                  </div>
-                                </Match>
-                                <Match when={state()?.loaded && isSvg()}>
-                                  <div class="flex flex-col gap-4 px-6 py-4">
-                                    {renderCode(svgContent() ?? "", "")}
-                                    <Show when={svgPreviewUrl()}>
-                                      <div class="flex justify-center pb-40">
-                                        <img src={svgPreviewUrl()} alt={path()} class="max-w-full max-h-96" />
-                                      </div>
-                                    </Show>
-                                  </div>
-                                </Match>
-                                <Match when={state()?.loaded && isBinary()}>
-                                  <div class="h-full px-6 pb-42 flex flex-col items-center justify-center text-center gap-6">
-                                    <Mark class="w-14 opacity-10" />
-                                    <div class="flex flex-col gap-2 max-w-md">
-                                      <div class="text-14-semibold text-text-strong truncate">
-                                        {path()?.split("/").pop()}
-                                      </div>
-                                      <div class="text-14-regular text-text-weak">
-                                        {language.t("session.files.binaryContent")}
-                                      </div>
-                                    </div>
-                                  </div>
-                                </Match>
-                                <Match when={state()?.loaded}>{renderCode(contents(), "pb-40")}</Match>
-                                <Match when={state()?.loading}>
-                                  <div class="px-6 py-4 text-text-weak">{language.t("common.loading")}...</div>
-                                </Match>
-                                <Match when={state()?.error}>
-                                  {(err) => <div class="px-6 py-4 text-text-weak">{err()}</div>}
-                                </Match>
-                              </Switch>
-                            </Tabs.Content>
-                          )
-                        }}
-                      </Show>
-                    </Tabs>
-                    <DragOverlay>
-                      <Show when={store.activeDraggable}>
-                        {(tab) => {
-                          const path = createMemo(() => file.pathFromTab(tab()))
-                          return (
-                            <div class="relative px-6 h-12 flex items-center bg-background-stronger border-x border-border-weak-base border-b border-b-transparent">
-                              <Show when={path()}>{(p) => <FileVisual active path={p()} />}</Show>
-                            </div>
-                          )
-                        }}
-                      </Show>
-                    </DragOverlay>
-                  </DragDropProvider>
-                }
-              >
-                {reviewPanel()}
-              </Show>
-            </div>
-
-            <Show when={layout.fileTree.opened()}>
-              <div
-                id="file-tree-panel"
-                class="relative shrink-0 h-full"
-                style={{ width: `${layout.fileTree.width()}px` }}
-              >
-                <div class="h-full border-l border-border-weak-base flex flex-col overflow-hidden group/filetree">
-                  <Tabs
-                    variant="pill"
-                    value={fileTreeTab()}
-                    onChange={setFileTreeTabValue}
-                    class="h-full"
-                    data-scope="filetree"
-                  >
-                    <Tabs.List>
-                      <Tabs.Trigger value="changes" class="flex-1" classes={{ button: "w-full" }}>
-                        {reviewCount()}{" "}
-                        {language.t(reviewCount() === 1 ? "session.review.change.one" : "session.review.change.other")}
-                      </Tabs.Trigger>
-                      <Tabs.Trigger value="all" class="flex-1" classes={{ button: "w-full" }}>
-                        {language.t("session.files.all")}
-                      </Tabs.Trigger>
-                    </Tabs.List>
-                    <Tabs.Content value="changes" class="bg-background-base px-3 py-0">
-                      <Switch>
-                        <Match when={hasReview()}>
-                          <Show
-                            when={diffsReady()}
-                            fallback={
-                              <div class="px-2 py-2 text-12-regular text-text-weak">
-                                {language.t("common.loading")}
-                                {language.t("common.loading.ellipsis")}
-                              </div>
-                            }
-                          >
-                            <FileTree
-                              path=""
-                              allowed={diffFiles()}
-                              kinds={kinds()}
-                              draggable={false}
-                              active={tree.activeDiff}
-                              onFileClick={(node) => focusReviewDiff(node.path)}
-                            />
-                          </Show>
-                        </Match>
-                        <Match when={true}>
-                          <div class="mt-8 text-center text-12-regular text-text-weak">
-                            {language.t("session.review.noChanges")}
-                          </div>
-                        </Match>
-                      </Switch>
-                    </Tabs.Content>
-                    <Tabs.Content value="all" class="bg-background-base px-3 py-0">
-                      <FileTree
-                        path=""
-                        modified={diffFiles()}
-                        kinds={kinds()}
-                        onFileClick={(node) => openTab(file.tab(node.path))}
-                      />
-                    </Tabs.Content>
-                  </Tabs>
-                </div>
-                <ResizeHandle
-                  direction="horizontal"
-                  edge="start"
-                  size={layout.fileTree.width()}
-                  min={200}
-                  max={480}
-                  collapseThreshold={160}
-                  onResize={layout.fileTree.resize}
-                  onCollapse={layout.fileTree.close}
-                />
-              </div>
-            </Show>
-          </aside>
-        </Show>
+        <SessionSidePanel
+          open={isDesktop() && view().reviewPanel.opened()}
+          language={language}
+          layout={layout}
+          command={command}
+          dialog={dialog}
+          file={file}
+          comments={comments}
+          sync={sync}
+          hasReview={hasReview()}
+          reviewCount={reviewCount()}
+          reviewTab={reviewTab()}
+          contextOpen={contextOpen}
+          openedTabs={openedTabs}
+          activeTab={activeTab}
+          activeFileTab={activeFileTab}
+          tabs={tabs}
+          openTab={openTab}
+          showAllFiles={showAllFiles}
+          reviewPanel={reviewPanel}
+          messages={messages as () => unknown[]}
+          visibleUserMessages={visibleUserMessages as () => unknown[]}
+          view={view}
+          info={info as () => unknown}
+          handoffFiles={() => handoff.session.get(sessionKey())?.files}
+          codeComponent={codeComponent}
+          addCommentToContext={addCommentToContext}
+          activeDraggable={() => store.activeDraggable}
+          onDragStart={handleDragStart}
+          onDragEnd={handleDragEnd}
+          onDragOver={handleDragOver}
+          fileTreeTab={fileTreeTab}
+          setFileTreeTabValue={setFileTreeTabValue}
+          diffsReady={diffsReady()}
+          diffFiles={diffFiles()}
+          kinds={kinds()}
+          activeDiff={tree.activeDiff}
+          focusReviewDiff={focusReviewDiff}
+        />
       </div>
 
-      <Show when={isDesktop() && view().terminal.opened()}>
-        <div
-          id="terminal-panel"
-          role="region"
-          aria-label={language.t("terminal.title")}
-          class="relative w-full flex flex-col shrink-0 border-t border-border-weak-base"
-          style={{ height: `${layout.terminal.height()}px` }}
-        >
-          <ResizeHandle
-            direction="vertical"
-            size={layout.terminal.height()}
-            min={100}
-            max={window.innerHeight * 0.6}
-            collapseThreshold={50}
-            onResize={layout.terminal.resize}
-            onCollapse={view().terminal.close}
-          />
-          <Show
-            when={terminal.ready()}
-            fallback={
-              <div class="flex flex-col h-full pointer-events-none">
-                <div class="h-10 flex items-center gap-2 px-2 border-b border-border-weak-base bg-background-stronger overflow-hidden">
-                  <For each={handoff.terminal.get(params.dir!) ?? []}>
-                    {(title) => (
-                      <div class="px-2 py-1 rounded-md bg-surface-base text-14-regular text-text-weak truncate max-w-40">
-                        {title}
-                      </div>
-                    )}
-                  </For>
-                  <div class="flex-1" />
-                  <div class="text-text-weak pr-2">
-                    {language.t("common.loading")}
-                    {language.t("common.loading.ellipsis")}
-                  </div>
-                </div>
-                <div class="flex-1 flex items-center justify-center text-text-weak">
-                  {language.t("terminal.loading")}
-                </div>
-              </div>
-            }
-          >
-            <DragDropProvider
-              onDragStart={handleTerminalDragStart}
-              onDragEnd={handleTerminalDragEnd}
-              onDragOver={handleTerminalDragOver}
-              collisionDetector={closestCenter}
-            >
-              <DragDropSensors />
-              <ConstrainDragYAxis />
-              <div class="flex flex-col h-full">
-                <Tabs
-                  variant="alt"
-                  value={terminal.active()}
-                  onChange={(id) => {
-                    // Only switch tabs if not in the middle of starting edit mode
-                    terminal.open(id)
-                  }}
-                  class="!h-auto !flex-none"
-                >
-                  <Tabs.List class="h-10">
-                    <SortableProvider ids={terminal.all().map((t: LocalPTY) => t.id)}>
-                      <For each={terminal.all()}>
-                        {(pty) => (
-                          <SortableTerminalTab
-                            terminal={pty}
-                            onClose={() => {
-                              view().terminal.close()
-                              setUi("autoCreated", false)
-                            }}
-                          />
-                        )}
-                      </For>
-                    </SortableProvider>
-                    <div class="h-full flex items-center justify-center">
-                      <TooltipKeybind
-                        title={language.t("command.terminal.new")}
-                        keybind={command.keybind("terminal.new")}
-                        class="flex items-center"
-                      >
-                        <IconButton
-                          icon="plus-small"
-                          variant="ghost"
-                          iconSize="large"
-                          onClick={terminal.new}
-                          aria-label={language.t("command.terminal.new")}
-                        />
-                      </TooltipKeybind>
-                    </div>
-                  </Tabs.List>
-                </Tabs>
-                <div class="flex-1 min-h-0 relative">
-                  <For each={terminal.all()}>
-                    {(pty) => (
-                      <div
-                        id={`terminal-wrapper-${pty.id}`}
-                        class="absolute inset-0"
-                        style={{
-                          display: terminal.active() === pty.id ? "block" : "none",
-                        }}
-                      >
-                        <Show when={pty.id} keyed>
-                          <Terminal
-                            pty={pty}
-                            onCleanup={terminal.update}
-                            onConnectError={() => terminal.clone(pty.id)}
-                          />
-                        </Show>
-                      </div>
-                    )}
-                  </For>
-                </div>
-              </div>
-              <DragOverlay>
-                <Show when={store.activeTerminalDraggable}>
-                  {(draggedId) => {
-                    const pty = createMemo(() => terminal.all().find((t: LocalPTY) => t.id === draggedId()))
-                    return (
-                      <Show when={pty()}>
-                        {(t) => (
-                          <div class="relative p-1 h-10 flex items-center bg-background-stronger text-14-regular">
-                            {(() => {
-                              const title = t().title
-                              const number = t().titleNumber
-                              const match = title.match(/^Terminal (\d+)$/)
-                              const parsed = match ? Number(match[1]) : undefined
-                              const isDefaultTitle =
-                                Number.isFinite(number) && number > 0 && Number.isFinite(parsed) && parsed === number
-
-                              if (title && !isDefaultTitle) return title
-                              if (Number.isFinite(number) && number > 0)
-                                return language.t("terminal.title.numbered", { number })
-                              if (title) return title
-                              return language.t("terminal.title")
-                            })()}
-                          </div>
-                        )}
-                      </Show>
-                    )
-                  }}
-                </Show>
-              </DragOverlay>
-            </DragDropProvider>
-          </Show>
-        </div>
-      </Show>
+      <TerminalPanel
+        open={isDesktop() && view().terminal.opened()}
+        height={layout.terminal.height()}
+        resize={layout.terminal.resize}
+        close={view().terminal.close}
+        terminal={terminal}
+        language={language}
+        command={command}
+        handoff={() => handoff.terminal.get(params.dir!) ?? []}
+        activeTerminalDraggable={() => store.activeTerminalDraggable}
+        handleTerminalDragStart={handleTerminalDragStart}
+        handleTerminalDragOver={handleTerminalDragOver}
+        handleTerminalDragEnd={handleTerminalDragEnd}
+        onCloseTab={() => setUi("autoCreated", false)}
+      />
     </div>
   )
 }
diff --git a/packages/app/src/pages/session/file-tab-scroll.test.ts b/packages/app/src/pages/session/file-tab-scroll.test.ts
new file mode 100644
index 000000000..89e0dcc8f
--- /dev/null
+++ b/packages/app/src/pages/session/file-tab-scroll.test.ts
@@ -0,0 +1,40 @@
+import { describe, expect, test } from "bun:test"
+import { nextTabListScrollLeft } from "./file-tab-scroll"
+
+describe("nextTabListScrollLeft", () => {
+  test("does not scroll when width shrinks", () => {
+    const left = nextTabListScrollLeft({
+      prevScrollWidth: 500,
+      scrollWidth: 420,
+      clientWidth: 300,
+      prevContextOpen: false,
+      contextOpen: false,
+    })
+
+    expect(left).toBeUndefined()
+  })
+
+  test("scrolls to start when context tab opens", () => {
+    const left = nextTabListScrollLeft({
+      prevScrollWidth: 400,
+      scrollWidth: 500,
+      clientWidth: 320,
+      prevContextOpen: false,
+      contextOpen: true,
+    })
+
+    expect(left).toBe(0)
+  })
+
+  test("scrolls to right edge for new file tabs", () => {
+    const left = nextTabListScrollLeft({
+      prevScrollWidth: 500,
+      scrollWidth: 780,
+      clientWidth: 300,
+      prevContextOpen: true,
+      contextOpen: true,
+    })
+
+    expect(left).toBe(480)
+  })
+})
diff --git a/packages/app/src/pages/session/file-tab-scroll.ts b/packages/app/src/pages/session/file-tab-scroll.ts
new file mode 100644
index 000000000..b69188d40
--- /dev/null
+++ b/packages/app/src/pages/session/file-tab-scroll.ts
@@ -0,0 +1,67 @@
+type Input = {
+  prevScrollWidth: number
+  scrollWidth: number
+  clientWidth: number
+  prevContextOpen: boolean
+  contextOpen: boolean
+}
+
+export const nextTabListScrollLeft = (input: Input) => {
+  if (input.scrollWidth <= input.prevScrollWidth) return
+  if (!input.prevContextOpen && input.contextOpen) return 0
+  if (input.scrollWidth <= input.clientWidth) return
+  return input.scrollWidth - input.clientWidth
+}
+
+export const createFileTabListSync = (input: { el: HTMLDivElement; contextOpen: () => boolean }) => {
+  let frame: number | undefined
+  let prevScrollWidth = input.el.scrollWidth
+  let prevContextOpen = input.contextOpen()
+
+  const update = () => {
+    const scrollWidth = input.el.scrollWidth
+    const clientWidth = input.el.clientWidth
+    const contextOpen = input.contextOpen()
+    const left = nextTabListScrollLeft({
+      prevScrollWidth,
+      scrollWidth,
+      clientWidth,
+      prevContextOpen,
+      contextOpen,
+    })
+
+    if (left !== undefined) {
+      input.el.scrollTo({
+        left,
+        behavior: "smooth",
+      })
+    }
+
+    prevScrollWidth = scrollWidth
+    prevContextOpen = contextOpen
+  }
+
+  const schedule = () => {
+    if (frame !== undefined) cancelAnimationFrame(frame)
+    frame = requestAnimationFrame(() => {
+      frame = undefined
+      update()
+    })
+  }
+
+  const onWheel = (e: WheelEvent) => {
+    if (Math.abs(e.deltaY) <= Math.abs(e.deltaX)) return
+    input.el.scrollLeft += e.deltaY > 0 ? 50 : -50
+    e.preventDefault()
+  }
+
+  input.el.addEventListener("wheel", onWheel, { passive: false })
+  const observer = new MutationObserver(schedule)
+  observer.observe(input.el, { childList: true })
+
+  return () => {
+    input.el.removeEventListener("wheel", onWheel)
+    observer.disconnect()
+    if (frame !== undefined) cancelAnimationFrame(frame)
+  }
+}
diff --git a/packages/app/src/pages/session/file-tabs.tsx b/packages/app/src/pages/session/file-tabs.tsx
new file mode 100644
index 000000000..0c8281a66
--- /dev/null
+++ b/packages/app/src/pages/session/file-tabs.tsx
@@ -0,0 +1,516 @@
+import { type ValidComponent, createEffect, createMemo, For, Match, on, onCleanup, Show, Switch } from "solid-js"
+import { createStore } from "solid-js/store"
+import { Dynamic } from "solid-js/web"
+import { checksum } from "@opencode-ai/util/encode"
+import { decode64 } from "@/utils/base64"
+import { showToast } from "@opencode-ai/ui/toast"
+import { LineComment as LineCommentView, LineCommentEditor } from "@opencode-ai/ui/line-comment"
+import { Mark } from "@opencode-ai/ui/logo"
+import { Tabs } from "@opencode-ai/ui/tabs"
+import { useLayout } from "@/context/layout"
+import { useFile, type SelectedLineRange } from "@/context/file"
+import { useComments } from "@/context/comments"
+import { useLanguage } from "@/context/language"
+
+export function FileTabContent(props: {
+  tab: string
+  activeTab: () => string
+  tabs: () => ReturnType<ReturnType<typeof useLayout>["tabs"]>
+  view: () => ReturnType<ReturnType<typeof useLayout>["view"]>
+  handoffFiles: () => Record<string, SelectedLineRange | null> | undefined
+  file: ReturnType<typeof useFile>
+  comments: ReturnType<typeof useComments>
+  language: ReturnType<typeof useLanguage>
+  codeComponent: NonNullable<ValidComponent>
+  addCommentToContext: (input: {
+    file: string
+    selection: SelectedLineRange
+    comment: string
+    preview?: string
+    origin?: "review" | "file"
+  }) => void
+}) {
+  let scroll: HTMLDivElement | undefined
+  let scrollFrame: number | undefined
+  let pending: { x: number; y: number } | undefined
+  let codeScroll: HTMLElement[] = []
+
+  const path = createMemo(() => props.file.pathFromTab(props.tab))
+  const state = createMemo(() => {
+    const p = path()
+    if (!p) return
+    return props.file.get(p)
+  })
+  const contents = createMemo(() => state()?.content?.content ?? "")
+  const cacheKey = createMemo(() => checksum(contents()))
+  const isImage = createMemo(() => {
+    const c = state()?.content
+    return c?.encoding === "base64" && c?.mimeType?.startsWith("image/") && c?.mimeType !== "image/svg+xml"
+  })
+  const isSvg = createMemo(() => {
+    const c = state()?.content
+    return c?.mimeType === "image/svg+xml"
+  })
+  const isBinary = createMemo(() => state()?.content?.type === "binary")
+  const svgContent = createMemo(() => {
+    if (!isSvg()) return
+    const c = state()?.content
+    if (!c) return
+    if (c.encoding !== "base64") return c.content
+    return decode64(c.content)
+  })
+
+  const svgDecodeFailed = createMemo(() => {
+    if (!isSvg()) return false
+    const c = state()?.content
+    if (!c) return false
+    if (c.encoding !== "base64") return false
+    return svgContent() === undefined
+  })
+
+  const svgToast = { shown: false }
+  createEffect(() => {
+    if (!svgDecodeFailed()) return
+    if (svgToast.shown) return
+    svgToast.shown = true
+    showToast({
+      variant: "error",
+      title: props.language.t("toast.file.loadFailed.title"),
+      description: "Invalid base64 content.",
+    })
+  })
+  const svgPreviewUrl = createMemo(() => {
+    if (!isSvg()) return
+    const c = state()?.content
+    if (!c) return
+    if (c.encoding === "base64") return `data:image/svg+xml;base64,${c.content}`
+    return `data:image/svg+xml;charset=utf-8,${encodeURIComponent(c.content)}`
+  })
+  const imageDataUrl = createMemo(() => {
+    if (!isImage()) return
+    const c = state()?.content
+    return `data:${c?.mimeType};base64,${c?.content}`
+  })
+  const selectedLines = createMemo(() => {
+    const p = path()
+    if (!p) return null
+    if (props.file.ready()) return props.file.selectedLines(p) ?? null
+    return props.handoffFiles()?.[p] ?? null
+  })
+
+  let wrap: HTMLDivElement | undefined
+
+  const fileComments = createMemo(() => {
+    const p = path()
+    if (!p) return []
+    return props.comments.list(p)
+  })
+
+  const commentedLines = createMemo(() => fileComments().map((comment) => comment.selection))
+
+  const [note, setNote] = createStore({
+    openedComment: null as string | null,
+    commenting: null as SelectedLineRange | null,
+    draft: "",
+    positions: {} as Record<string, number>,
+    draftTop: undefined as number | undefined,
+  })
+
+  const openedComment = () => note.openedComment
+  const setOpenedComment = (
+    value: typeof note.openedComment | ((value: typeof note.openedComment) => typeof note.openedComment),
+  ) => setNote("openedComment", value)
+
+  const commenting = () => note.commenting
+  const setCommenting = (value: typeof note.commenting | ((value: typeof note.commenting) => typeof note.commenting)) =>
+    setNote("commenting", value)
+
+  const draft = () => note.draft
+  const setDraft = (value: typeof note.draft | ((value: typeof note.draft) => typeof note.draft)) =>
+    setNote("draft", value)
+
+  const positions = () => note.positions
+  const setPositions = (value: typeof note.positions | ((value: typeof note.positions) => typeof note.positions)) =>
+    setNote("positions", value)
+
+  const draftTop = () => note.draftTop
+  const setDraftTop = (value: typeof note.draftTop | ((value: typeof note.draftTop) => typeof note.draftTop)) =>
+    setNote("draftTop", value)
+
+  const commentLabel = (range: SelectedLineRange) => {
+    const start = Math.min(range.start, range.end)
+    const end = Math.max(range.start, range.end)
+    if (start === end) return `line ${start}`
+    return `lines ${start}-${end}`
+  }
+
+  const getRoot = () => {
+    const el = wrap
+    if (!el) return
+
+    const host = el.querySelector("diffs-container")
+    if (!(host instanceof HTMLElement)) return
+
+    const root = host.shadowRoot
+    if (!root) return
+
+    return root
+  }
+
+  const findMarker = (root: ShadowRoot, range: SelectedLineRange) => {
+    const line = Math.max(range.start, range.end)
+    const node = root.querySelector(`[data-line="${line}"]`)
+    if (!(node instanceof HTMLElement)) return
+    return node
+  }
+
+  const markerTop = (wrapper: HTMLElement, marker: HTMLElement) => {
+    const wrapperRect = wrapper.getBoundingClientRect()
+    const rect = marker.getBoundingClientRect()
+    return rect.top - wrapperRect.top + Math.max(0, (rect.height - 20) / 2)
+  }
+
+  const updateComments = () => {
+    const el = wrap
+    const root = getRoot()
+    if (!el || !root) {
+      setPositions({})
+      setDraftTop(undefined)
+      return
+    }
+
+    const next: Record<string, number> = {}
+    for (const comment of fileComments()) {
+      const marker = findMarker(root, comment.selection)
+      if (!marker) continue
+      next[comment.id] = markerTop(el, marker)
+    }
+
+    setPositions(next)
+
+    const range = commenting()
+    if (!range) {
+      setDraftTop(undefined)
+      return
+    }
+
+    const marker = findMarker(root, range)
+    if (!marker) {
+      setDraftTop(undefined)
+      return
+    }
+
+    setDraftTop(markerTop(el, marker))
+  }
+
+  const scheduleComments = () => {
+    requestAnimationFrame(updateComments)
+  }
+
+  createEffect(() => {
+    fileComments()
+    scheduleComments()
+  })
+
+  createEffect(() => {
+    const range = commenting()
+    scheduleComments()
+    if (!range) return
+    setDraft("")
+  })
+
+  createEffect(() => {
+    const focus = props.comments.focus()
+    const p = path()
+    if (!focus || !p) return
+    if (focus.file !== p) return
+    if (props.activeTab() !== props.tab) return
+
+    const target = fileComments().find((comment) => comment.id === focus.id)
+    if (!target) return
+
+    setOpenedComment(target.id)
+    setCommenting(null)
+    props.file.setSelectedLines(p, target.selection)
+    requestAnimationFrame(() => props.comments.clearFocus())
+  })
+
+  const getCodeScroll = () => {
+    const el = scroll
+    if (!el) return []
+
+    const host = el.querySelector("diffs-container")
+    if (!(host instanceof HTMLElement)) return []
+
+    const root = host.shadowRoot
+    if (!root) return []
+
+    return Array.from(root.querySelectorAll("[data-code]")).filter(
+      (node): node is HTMLElement => node instanceof HTMLElement && node.clientWidth > 0,
+    )
+  }
+
+  const queueScrollUpdate = (next: { x: number; y: number }) => {
+    pending = next
+    if (scrollFrame !== undefined) return
+
+    scrollFrame = requestAnimationFrame(() => {
+      scrollFrame = undefined
+
+      const out = pending
+      pending = undefined
+      if (!out) return
+
+      props.view().setScroll(props.tab, out)
+    })
+  }
+
+  const handleCodeScroll = (event: Event) => {
+    const el = scroll
+    if (!el) return
+
+    const target = event.currentTarget
+    if (!(target instanceof HTMLElement)) return
+
+    queueScrollUpdate({
+      x: target.scrollLeft,
+      y: el.scrollTop,
+    })
+  }
+
+  const syncCodeScroll = () => {
+    const next = getCodeScroll()
+    if (next.length === codeScroll.length && next.every((el, i) => el === codeScroll[i])) return
+
+    for (const item of codeScroll) {
+      item.removeEventListener("scroll", handleCodeScroll)
+    }
+
+    codeScroll = next
+
+    for (const item of codeScroll) {
+      item.addEventListener("scroll", handleCodeScroll)
+    }
+  }
+
+  const restoreScroll = () => {
+    const el = scroll
+    if (!el) return
+
+    const s = props.view()?.scroll(props.tab)
+    if (!s) return
+
+    syncCodeScroll()
+
+    if (codeScroll.length > 0) {
+      for (const item of codeScroll) {
+        if (item.scrollLeft !== s.x) item.scrollLeft = s.x
+      }
+    }
+
+    if (el.scrollTop !== s.y) el.scrollTop = s.y
+    if (codeScroll.length > 0) return
+    if (el.scrollLeft !== s.x) el.scrollLeft = s.x
+  }
+
+  const handleScroll = (event: Event & { currentTarget: HTMLDivElement }) => {
+    if (codeScroll.length === 0) syncCodeScroll()
+
+    queueScrollUpdate({
+      x: codeScroll[0]?.scrollLeft ?? event.currentTarget.scrollLeft,
+      y: event.currentTarget.scrollTop,
+    })
+  }
+
+  createEffect(
+    on(
+      () => state()?.loaded,
+      (loaded) => {
+        if (!loaded) return
+        requestAnimationFrame(restoreScroll)
+      },
+      { defer: true },
+    ),
+  )
+
+  createEffect(
+    on(
+      () => props.file.ready(),
+      (ready) => {
+        if (!ready) return
+        requestAnimationFrame(restoreScroll)
+      },
+      { defer: true },
+    ),
+  )
+
+  createEffect(
+    on(
+      () => props.tabs().active() === props.tab,
+      (active) => {
+        if (!active) return
+        if (!state()?.loaded) return
+        requestAnimationFrame(restoreScroll)
+      },
+    ),
+  )
+
+  onCleanup(() => {
+    for (const item of codeScroll) {
+      item.removeEventListener("scroll", handleCodeScroll)
+    }
+
+    if (scrollFrame === undefined) return
+    cancelAnimationFrame(scrollFrame)
+  })
+
+  const renderCode = (source: string, wrapperClass: string) => (
+    <div
+      ref={(el) => {
+        wrap = el
+        scheduleComments()
+      }}
+      class={`relative overflow-hidden ${wrapperClass}`}
+    >
+      <Dynamic
+        component={props.codeComponent}
+        file={{
+          name: path() ?? "",
+          contents: source,
+          cacheKey: cacheKey(),
+        }}
+        enableLineSelection
+        selectedLines={selectedLines()}
+        commentedLines={commentedLines()}
+        onRendered={() => {
+          requestAnimationFrame(restoreScroll)
+          requestAnimationFrame(scheduleComments)
+        }}
+        onLineSelected={(range: SelectedLineRange | null) => {
+          const p = path()
+          if (!p) return
+          props.file.setSelectedLines(p, range)
+          if (!range) setCommenting(null)
+        }}
+        onLineSelectionEnd={(range: SelectedLineRange | null) => {
+          if (!range) {
+            setCommenting(null)
+            return
+          }
+
+          setOpenedComment(null)
+          setCommenting(range)
+        }}
+        overflow="scroll"
+        class="select-text"
+      />
+      <For each={fileComments()}>
+        {(comment) => (
+          <LineCommentView
+            id={comment.id}
+            top={positions()[comment.id]}
+            open={openedComment() === comment.id}
+            comment={comment.comment}
+            selection={commentLabel(comment.selection)}
+            onMouseEnter={() => {
+              const p = path()
+              if (!p) return
+              props.file.setSelectedLines(p, comment.selection)
+            }}
+            onClick={() => {
+              const p = path()
+              if (!p) return
+              setCommenting(null)
+              setOpenedComment((current) => (current === comment.id ? null : comment.id))
+              props.file.setSelectedLines(p, comment.selection)
+            }}
+          />
+        )}
+      </For>
+      <Show when={commenting()}>
+        {(range) => (
+          <Show when={draftTop() !== undefined}>
+            <LineCommentEditor
+              top={draftTop()}
+              value={draft()}
+              selection={commentLabel(range())}
+              onInput={(value) => setDraft(value)}
+              onCancel={() => setCommenting(null)}
+              onSubmit={(value) => {
+                const p = path()
+                if (!p) return
+                props.addCommentToContext({
+                  file: p,
+                  selection: range(),
+                  comment: value,
+                  origin: "file",
+                })
+                setCommenting(null)
+              }}
+              onPopoverFocusOut={(e: FocusEvent) => {
+                const current = e.currentTarget as HTMLDivElement
+                const target = e.relatedTarget
+                if (target instanceof Node && current.contains(target)) return
+
+                setTimeout(() => {
+                  if (!document.activeElement || !current.contains(document.activeElement)) {
+                    setCommenting(null)
+                  }
+                }, 0)
+              }}
+            />
+          </Show>
+        )}
+      </Show>
+    </div>
+  )
+
+  return (
+    <Tabs.Content
+      value={props.tab}
+      class="mt-3 relative"
+      ref={(el: HTMLDivElement) => {
+        scroll = el
+        restoreScroll()
+      }}
+      onScroll={handleScroll}
+    >
+      <Switch>
+        <Match when={state()?.loaded && isImage()}>
+          <div class="px-6 py-4 pb-40">
+            <img
+              src={imageDataUrl()}
+              alt={path()}
+              class="max-w-full"
+              onLoad={() => requestAnimationFrame(restoreScroll)}
+            />
+          </div>
+        </Match>
+        <Match when={state()?.loaded && isSvg()}>
+          <div class="flex flex-col gap-4 px-6 py-4">
+            {renderCode(svgContent() ?? "", "")}
+            <Show when={svgPreviewUrl()}>
+              <div class="flex justify-center pb-40">
+                <img src={svgPreviewUrl()} alt={path()} class="max-w-full max-h-96" />
+              </div>
+            </Show>
+          </div>
+        </Match>
+        <Match when={state()?.loaded && isBinary()}>
+          <div class="h-full px-6 pb-42 flex flex-col items-center justify-center text-center gap-6">
+            <Mark class="w-14 opacity-10" />
+            <div class="flex flex-col gap-2 max-w-md">
+              <div class="text-14-semibold text-text-strong truncate">{path()?.split("/").pop()}</div>
+              <div class="text-14-regular text-text-weak">{props.language.t("session.files.binaryContent")}</div>
+            </div>
+          </div>
+        </Match>
+        <Match when={state()?.loaded}>{renderCode(contents(), "pb-40")}</Match>
+        <Match when={state()?.loading}>
+          <div class="px-6 py-4 text-text-weak">{props.language.t("common.loading")}...</div>
+        </Match>
+        <Match when={state()?.error}>{(err) => <div class="px-6 py-4 text-text-weak">{err()}</div>}</Match>
+      </Switch>
+    </Tabs.Content>
+  )
+}
diff --git a/packages/app/src/pages/session/message-gesture.test.ts b/packages/app/src/pages/session/message-gesture.test.ts
new file mode 100644
index 000000000..b2af4bb83
--- /dev/null
+++ b/packages/app/src/pages/session/message-gesture.test.ts
@@ -0,0 +1,62 @@
+import { describe, expect, test } from "bun:test"
+import { normalizeWheelDelta, shouldMarkBoundaryGesture } from "./message-gesture"
+
+describe("normalizeWheelDelta", () => {
+  test("converts line mode to px", () => {
+    expect(normalizeWheelDelta({ deltaY: 3, deltaMode: 1, rootHeight: 500 })).toBe(120)
+  })
+
+  test("converts page mode to container height", () => {
+    expect(normalizeWheelDelta({ deltaY: -1, deltaMode: 2, rootHeight: 600 })).toBe(-600)
+  })
+
+  test("keeps pixel mode unchanged", () => {
+    expect(normalizeWheelDelta({ deltaY: 16, deltaMode: 0, rootHeight: 600 })).toBe(16)
+  })
+})
+
+describe("shouldMarkBoundaryGesture", () => {
+  test("marks when nested scroller cannot scroll", () => {
+    expect(
+      shouldMarkBoundaryGesture({
+        delta: 20,
+        scrollTop: 0,
+        scrollHeight: 300,
+        clientHeight: 300,
+      }),
+    ).toBe(true)
+  })
+
+  test("marks when scrolling beyond top boundary", () => {
+    expect(
+      shouldMarkBoundaryGesture({
+        delta: -40,
+        scrollTop: 10,
+        scrollHeight: 1000,
+        clientHeight: 400,
+      }),
+    ).toBe(true)
+  })
+
+  test("marks when scrolling beyond bottom boundary", () => {
+    expect(
+      shouldMarkBoundaryGesture({
+        delta: 50,
+        scrollTop: 580,
+        scrollHeight: 1000,
+        clientHeight: 400,
+      }),
+    ).toBe(true)
+  })
+
+  test("does not mark when nested scroller can consume movement", () => {
+    expect(
+      shouldMarkBoundaryGesture({
+        delta: 20,
+        scrollTop: 200,
+        scrollHeight: 1000,
+        clientHeight: 400,
+      }),
+    ).toBe(false)
+  })
+})
diff --git a/packages/app/src/pages/session/message-gesture.ts b/packages/app/src/pages/session/message-gesture.ts
new file mode 100644
index 000000000..731cb1bde
--- /dev/null
+++ b/packages/app/src/pages/session/message-gesture.ts
@@ -0,0 +1,21 @@
+export const normalizeWheelDelta = (input: { deltaY: number; deltaMode: number; rootHeight: number }) => {
+  if (input.deltaMode === 1) return input.deltaY * 40
+  if (input.deltaMode === 2) return input.deltaY * input.rootHeight
+  return input.deltaY
+}
+
+export const shouldMarkBoundaryGesture = (input: {
+  delta: number
+  scrollTop: number
+  scrollHeight: number
+  clientHeight: number
+}) => {
+  const max = input.scrollHeight - input.clientHeight
+  if (max <= 1) return true
+  if (!input.delta) return false
+
+  if (input.delta < 0) return input.scrollTop + input.delta <= 0
+
+  const remaining = max - input.scrollTop
+  return input.delta > remaining
+}
diff --git a/packages/app/src/pages/session/message-timeline.tsx b/packages/app/src/pages/session/message-timeline.tsx
new file mode 100644
index 000000000..f536c7061
--- /dev/null
+++ b/packages/app/src/pages/session/message-timeline.tsx
@@ -0,0 +1,348 @@
+import { For, onCleanup, onMount, Show, type JSX } from "solid-js"
+import { Button } from "@opencode-ai/ui/button"
+import { Icon } from "@opencode-ai/ui/icon"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
+import { InlineInput } from "@opencode-ai/ui/inline-input"
+import { Tooltip } from "@opencode-ai/ui/tooltip"
+import { SessionTurn } from "@opencode-ai/ui/session-turn"
+import type { UserMessage } from "@opencode-ai/sdk/v2"
+import { shouldMarkBoundaryGesture, normalizeWheelDelta } from "@/pages/session/message-gesture"
+
+export function MessageTimeline(props: {
+  mobileChanges: boolean
+  mobileFallback: JSX.Element
+  scroll: { overflow: boolean; bottom: boolean }
+  onResumeScroll: () => void
+  setScrollRef: (el: HTMLDivElement | undefined) => void
+  onScheduleScrollState: (el: HTMLDivElement) => void
+  onAutoScrollHandleScroll: () => void
+  onMarkScrollGesture: (target?: EventTarget | null) => void
+  hasScrollGesture: () => boolean
+  isDesktop: boolean
+  onScrollSpyScroll: () => void
+  onAutoScrollInteraction: (event: MouseEvent) => void
+  showHeader: boolean
+  centered: boolean
+  title?: string
+  parentID?: string
+  openTitleEditor: () => void
+  closeTitleEditor: () => void
+  saveTitleEditor: () => void | Promise<void>
+  titleRef: (el: HTMLInputElement) => void
+  titleState: {
+    draft: string
+    editing: boolean
+    saving: boolean
+    menuOpen: boolean
+    pendingRename: boolean
+  }
+  onTitleDraft: (value: string) => void
+  onTitleMenuOpen: (open: boolean) => void
+  onTitlePendingRename: (value: boolean) => void
+  onNavigateParent: () => void
+  sessionID: string
+  onArchiveSession: (sessionID: string) => void
+  onDeleteSession: (sessionID: string) => void
+  t: (key: string, vars?: Record<string, string | number | boolean>) => string
+  setContentRef: (el: HTMLDivElement) => void
+  turnStart: number
+  onRenderEarlier: () => void
+  historyMore: boolean
+  historyLoading: boolean
+  onLoadEarlier: () => void
+  renderedUserMessages: UserMessage[]
+  anchor: (id: string) => string
+  onRegisterMessage: (el: HTMLDivElement, id: string) => void
+  onUnregisterMessage: (id: string) => void
+  onFirstTurnMount?: () => void
+  lastUserMessageID?: string
+  expanded: Record<string, boolean>
+  onToggleExpanded: (id: string) => void
+}) {
+  let touchGesture: number | undefined
+
+  return (
+    <Show
+      when={!props.mobileChanges}
+      fallback={<div class="relative h-full overflow-hidden">{props.mobileFallback}</div>}
+    >
+      <div class="relative w-full h-full min-w-0">
+        <div
+          class="absolute left-1/2 -translate-x-1/2 bottom-[calc(var(--prompt-height,8rem)+32px)] z-[60] pointer-events-none transition-all duration-200 ease-out"
+          classList={{
+            "opacity-100 translate-y-0 scale-100": props.scroll.overflow && !props.scroll.bottom,
+            "opacity-0 translate-y-2 scale-95 pointer-events-none": !props.scroll.overflow || props.scroll.bottom,
+          }}
+        >
+          <button
+            class="pointer-events-auto size-8 flex items-center justify-center rounded-full bg-background-base border border-border-base shadow-sm text-text-base hover:bg-background-stronger transition-colors"
+            onClick={props.onResumeScroll}
+          >
+            <Icon name="arrow-down-to-line" />
+          </button>
+        </div>
+        <div
+          ref={props.setScrollRef}
+          onWheel={(e) => {
+            const root = e.currentTarget
+            const target = e.target instanceof Element ? e.target : undefined
+            const nested = target?.closest("[data-scrollable]")
+            if (!nested || nested === root) {
+              props.onMarkScrollGesture(root)
+              return
+            }
+
+            if (!(nested instanceof HTMLElement)) {
+              props.onMarkScrollGesture(root)
+              return
+            }
+
+            const delta = normalizeWheelDelta({
+              deltaY: e.deltaY,
+              deltaMode: e.deltaMode,
+              rootHeight: root.clientHeight,
+            })
+            if (!delta) return
+
+            if (
+              shouldMarkBoundaryGesture({
+                delta,
+                scrollTop: nested.scrollTop,
+                scrollHeight: nested.scrollHeight,
+                clientHeight: nested.clientHeight,
+              })
+            ) {
+              props.onMarkScrollGesture(root)
+            }
+          }}
+          onTouchStart={(e) => {
+            touchGesture = e.touches[0]?.clientY
+          }}
+          onTouchMove={(e) => {
+            const next = e.touches[0]?.clientY
+            const prev = touchGesture
+            touchGesture = next
+            if (next === undefined || prev === undefined) return
+
+            const delta = prev - next
+            if (!delta) return
+
+            const root = e.currentTarget
+            const target = e.target instanceof Element ? e.target : undefined
+            const nested = target?.closest("[data-scrollable]")
+            if (!nested || nested === root) {
+              props.onMarkScrollGesture(root)
+              return
+            }
+
+            if (!(nested instanceof HTMLElement)) {
+              props.onMarkScrollGesture(root)
+              return
+            }
+
+            if (
+              shouldMarkBoundaryGesture({
+                delta,
+                scrollTop: nested.scrollTop,
+                scrollHeight: nested.scrollHeight,
+                clientHeight: nested.clientHeight,
+              })
+            ) {
+              props.onMarkScrollGesture(root)
+            }
+          }}
+          onTouchEnd={() => {
+            touchGesture = undefined
+          }}
+          onTouchCancel={() => {
+            touchGesture = undefined
+          }}
+          onPointerDown={(e) => {
+            if (e.target !== e.currentTarget) return
+            props.onMarkScrollGesture(e.currentTarget)
+          }}
+          onScroll={(e) => {
+            props.onScheduleScrollState(e.currentTarget)
+            if (!props.hasScrollGesture()) return
+            props.onAutoScrollHandleScroll()
+            props.onMarkScrollGesture(e.currentTarget)
+            if (props.isDesktop) props.onScrollSpyScroll()
+          }}
+          onClick={props.onAutoScrollInteraction}
+          class="relative min-w-0 w-full h-full overflow-y-auto session-scroller"
+          style={{ "--session-title-height": props.showHeader ? "40px" : "0px" }}
+        >
+          <Show when={props.showHeader}>
+            <div
+              classList={{
+                "sticky top-0 z-30 bg-background-stronger": true,
+                "w-full": true,
+                "px-4 md:px-6": true,
+                "md:max-w-200 md:mx-auto 3xl:max-w-[1200px]": props.centered,
+              }}
+            >
+              <div class="h-10 w-full flex items-center justify-between gap-2">
+                <div class="flex items-center gap-1 min-w-0 flex-1">
+                  <Show when={props.parentID}>
+                    <IconButton
+                      tabIndex={-1}
+                      icon="arrow-left"
+                      variant="ghost"
+                      onClick={props.onNavigateParent}
+                      aria-label={props.t("common.goBack")}
+                    />
+                  </Show>
+                  <Show when={props.title || props.titleState.editing}>
+                    <Show
+                      when={props.titleState.editing}
+                      fallback={
+                        <h1 class="text-16-medium text-text-strong truncate min-w-0" onDblClick={props.openTitleEditor}>
+                          {props.title}
+                        </h1>
+                      }
+                    >
+                      <InlineInput
+                        ref={props.titleRef}
+                        value={props.titleState.draft}
+                        disabled={props.titleState.saving}
+                        class="text-16-medium text-text-strong grow-1 min-w-0"
+                        onInput={(event) => props.onTitleDraft(event.currentTarget.value)}
+                        onKeyDown={(event) => {
+                          event.stopPropagation()
+                          if (event.key === "Enter") {
+                            event.preventDefault()
+                            void props.saveTitleEditor()
+                            return
+                          }
+                          if (event.key === "Escape") {
+                            event.preventDefault()
+                            props.closeTitleEditor()
+                          }
+                        }}
+                        onBlur={props.closeTitleEditor}
+                      />
+                    </Show>
+                  </Show>
+                </div>
+                <Show when={props.sessionID}>
+                  {(id) => (
+                    <div class="shrink-0 flex items-center">
+                      <DropdownMenu open={props.titleState.menuOpen} onOpenChange={props.onTitleMenuOpen}>
+                        <Tooltip value={props.t("common.moreOptions")} placement="top">
+                          <DropdownMenu.Trigger
+                            as={IconButton}
+                            icon="dot-grid"
+                            variant="ghost"
+                            class="size-6 rounded-md data-[expanded]:bg-surface-base-active"
+                            aria-label={props.t("common.moreOptions")}
+                          />
+                        </Tooltip>
+                        <DropdownMenu.Portal>
+                          <DropdownMenu.Content
+                            onCloseAutoFocus={(event) => {
+                              if (!props.titleState.pendingRename) return
+                              event.preventDefault()
+                              props.onTitlePendingRename(false)
+                              props.openTitleEditor()
+                            }}
+                          >
+                            <DropdownMenu.Item
+                              onSelect={() => {
+                                props.onTitlePendingRename(true)
+                                props.onTitleMenuOpen(false)
+                              }}
+                            >
+                              <DropdownMenu.ItemLabel>{props.t("common.rename")}</DropdownMenu.ItemLabel>
+                            </DropdownMenu.Item>
+                            <DropdownMenu.Item onSelect={() => props.onArchiveSession(id())}>
+                              <DropdownMenu.ItemLabel>{props.t("common.archive")}</DropdownMenu.ItemLabel>
+                            </DropdownMenu.Item>
+                            <DropdownMenu.Separator />
+                            <DropdownMenu.Item onSelect={() => props.onDeleteSession(id())}>
+                              <DropdownMenu.ItemLabel>{props.t("common.delete")}</DropdownMenu.ItemLabel>
+                            </DropdownMenu.Item>
+                          </DropdownMenu.Content>
+                        </DropdownMenu.Portal>
+                      </DropdownMenu>
+                    </div>
+                  )}
+                </Show>
+              </div>
+            </div>
+          </Show>
+
+          <div
+            ref={props.setContentRef}
+            role="log"
+            class="flex flex-col gap-12 items-start justify-start pb-[calc(var(--prompt-height,8rem)+64px)] md:pb-[calc(var(--prompt-height,10rem)+64px)] transition-[margin]"
+            classList={{
+              "w-full": true,
+              "md:max-w-200 md:mx-auto 3xl:max-w-[1200px]": props.centered,
+              "mt-0.5": props.centered,
+              "mt-0": !props.centered,
+            }}
+          >
+            <Show when={props.turnStart > 0}>
+              <div class="w-full flex justify-center">
+                <Button variant="ghost" size="large" class="text-12-medium opacity-50" onClick={props.onRenderEarlier}>
+                  {props.t("session.messages.renderEarlier")}
+                </Button>
+              </div>
+            </Show>
+            <Show when={props.historyMore}>
+              <div class="w-full flex justify-center">
+                <Button
+                  variant="ghost"
+                  size="large"
+                  class="text-12-medium opacity-50"
+                  disabled={props.historyLoading}
+                  onClick={props.onLoadEarlier}
+                >
+                  {props.historyLoading
+                    ? props.t("session.messages.loadingEarlier")
+                    : props.t("session.messages.loadEarlier")}
+                </Button>
+              </div>
+            </Show>
+            <For each={props.renderedUserMessages}>
+              {(message) => {
+                if (import.meta.env.DEV && props.onFirstTurnMount) {
+                  onMount(() => props.onFirstTurnMount?.())
+                }
+
+                return (
+                  <div
+                    id={props.anchor(message.id)}
+                    data-message-id={message.id}
+                    ref={(el) => {
+                      props.onRegisterMessage(el, message.id)
+                      onCleanup(() => props.onUnregisterMessage(message.id))
+                    }}
+                    classList={{
+                      "min-w-0 w-full max-w-full": true,
+                      "md:max-w-200 3xl:max-w-[1200px]": props.centered,
+                    }}
+                  >
+                    <SessionTurn
+                      sessionID={props.sessionID}
+                      messageID={message.id}
+                      lastUserMessageID={props.lastUserMessageID}
+                      stepsExpanded={props.expanded[message.id] ?? false}
+                      onStepsExpandedToggle={() => props.onToggleExpanded(message.id)}
+                      classes={{
+                        root: "min-w-0 w-full relative",
+                        content: "flex flex-col justify-between !overflow-visible",
+                        container: "w-full px-4 md:px-6",
+                      }}
+                    />
+                  </div>
+                )
+              }}
+            </For>
+          </div>
+        </div>
+      </div>
+    </Show>
+  )
+}
diff --git a/packages/app/src/pages/session/review-tab.tsx b/packages/app/src/pages/session/review-tab.tsx
new file mode 100644
index 000000000..a4232dd74
--- /dev/null
+++ b/packages/app/src/pages/session/review-tab.tsx
@@ -0,0 +1,158 @@
+import { createEffect, on, onCleanup, createSignal, type JSX } from "solid-js"
+import type { FileDiff } from "@opencode-ai/sdk/v2"
+import { SessionReview } from "@opencode-ai/ui/session-review"
+import type { SelectedLineRange } from "@/context/file"
+import { useSDK } from "@/context/sdk"
+import { useLayout } from "@/context/layout"
+import type { LineComment } from "@/context/comments"
+
+export type DiffStyle = "unified" | "split"
+
+export interface SessionReviewTabProps {
+  title?: JSX.Element
+  empty?: JSX.Element
+  diffs: () => FileDiff[]
+  view: () => ReturnType<ReturnType<typeof useLayout>["view"]>
+  diffStyle: DiffStyle
+  onDiffStyleChange?: (style: DiffStyle) => void
+  onViewFile?: (file: string) => void
+  onLineComment?: (comment: { file: string; selection: SelectedLineRange; comment: string; preview?: string }) => void
+  comments?: LineComment[]
+  focusedComment?: { file: string; id: string } | null
+  onFocusedCommentChange?: (focus: { file: string; id: string } | null) => void
+  focusedFile?: string
+  onScrollRef?: (el: HTMLDivElement) => void
+  classes?: {
+    root?: string
+    header?: string
+    container?: string
+  }
+}
+
+export function StickyAddButton(props: { children: JSX.Element }) {
+  const [stuck, setStuck] = createSignal(false)
+  let button: HTMLDivElement | undefined
+
+  createEffect(() => {
+    const node = button
+    if (!node) return
+
+    const scroll = node.parentElement
+    if (!scroll) return
+
+    const handler = () => {
+      const rect = node.getBoundingClientRect()
+      const scrollRect = scroll.getBoundingClientRect()
+      setStuck(rect.right >= scrollRect.right && scroll.scrollWidth > scroll.clientWidth)
+    }
+
+    scroll.addEventListener("scroll", handler, { passive: true })
+    const observer = new ResizeObserver(handler)
+    observer.observe(scroll)
+    handler()
+    onCleanup(() => {
+      scroll.removeEventListener("scroll", handler)
+      observer.disconnect()
+    })
+  })
+
+  return (
+    <div
+      ref={button}
+      class="bg-background-base h-full shrink-0 sticky right-0 z-10 flex items-center justify-center border-b border-border-weak-base px-3"
+      classList={{ "border-l": stuck() }}
+    >
+      {props.children}
+    </div>
+  )
+}
+
+export function SessionReviewTab(props: SessionReviewTabProps) {
+  let scroll: HTMLDivElement | undefined
+  let frame: number | undefined
+  let pending: { x: number; y: number } | undefined
+
+  const sdk = useSDK()
+
+  const readFile = async (path: string) => {
+    return sdk.client.file
+      .read({ path })
+      .then((x) => x.data)
+      .catch(() => undefined)
+  }
+
+  const restoreScroll = () => {
+    const el = scroll
+    if (!el) return
+
+    const s = props.view().scroll("review")
+    if (!s) return
+
+    if (el.scrollTop !== s.y) el.scrollTop = s.y
+    if (el.scrollLeft !== s.x) el.scrollLeft = s.x
+  }
+
+  const handleScroll = (event: Event & { currentTarget: HTMLDivElement }) => {
+    pending = {
+      x: event.currentTarget.scrollLeft,
+      y: event.currentTarget.scrollTop,
+    }
+    if (frame !== undefined) return
+
+    frame = requestAnimationFrame(() => {
+      frame = undefined
+
+      const next = pending
+      pending = undefined
+      if (!next) return
+
+      props.view().setScroll("review", next)
+    })
+  }
+
+  createEffect(
+    on(
+      () => props.diffs().length,
+      () => {
+        requestAnimationFrame(restoreScroll)
+      },
+      { defer: true },
+    ),
+  )
+
+  onCleanup(() => {
+    if (frame === undefined) return
+    cancelAnimationFrame(frame)
+  })
+
+  return (
+    <SessionReview
+      title={props.title}
+      empty={props.empty}
+      scrollRef={(el) => {
+        scroll = el
+        props.onScrollRef?.(el)
+        restoreScroll()
+      }}
+      onScroll={handleScroll}
+      onDiffRendered={() => requestAnimationFrame(restoreScroll)}
+      open={props.view().review.open()}
+      onOpenChange={props.view().review.setOpen}
+      classes={{
+        root: props.classes?.root ?? "pb-40",
+        header: props.classes?.header ?? "px-6",
+        container: props.classes?.container ?? "px-6",
+      }}
+      diffs={props.diffs()}
+      diffStyle={props.diffStyle}
+      onDiffStyleChange={props.onDiffStyleChange}
+      onViewFile={props.onViewFile}
+      focusedFile={props.focusedFile}
+      readFile={readFile}
+      onLineComment={props.onLineComment}
+      comments={props.comments}
+      focusedComment={props.focusedComment}
+      onFocusedCommentChange={props.onFocusedCommentChange}
+    />
+  )
+}
diff --git a/packages/app/src/pages/session/session-command-helpers.ts b/packages/app/src/pages/session/session-command-helpers.ts
new file mode 100644
index 000000000..b71a7b768
--- /dev/null
+++ b/packages/app/src/pages/session/session-command-helpers.ts
@@ -0,0 +1,10 @@
+export const canAddSelectionContext = (input: {
+  active?: string
+  pathFromTab: (tab: string) => string | undefined
+  selectedLines: (path: string) => unknown
+}) => {
+  if (!input.active) return false
+  const path = input.pathFromTab(input.active)
+  if (!path) return false
+  return input.selectedLines(path) != null
+}
diff --git a/packages/app/src/pages/session/session-mobile-tabs.tsx b/packages/app/src/pages/session/session-mobile-tabs.tsx
new file mode 100644
index 000000000..41f058231
--- /dev/null
+++ b/packages/app/src/pages/session/session-mobile-tabs.tsx
@@ -0,0 +1,36 @@
+import { Match, Show, Switch } from "solid-js"
+import { Tabs } from "@opencode-ai/ui/tabs"
+
+export function SessionMobileTabs(props: {
+  open: boolean
+  hasReview: boolean
+  reviewCount: number
+  onSession: () => void
+  onChanges: () => void
+  t: (key: string, vars?: Record<string, string | number | boolean>) => string
+}) {
+  return (
+    <Show when={props.open}>
+      <Tabs class="h-auto">
+        <Tabs.List>
+          <Tabs.Trigger value="session" class="w-1/2" classes={{ button: "w-full" }} onClick={props.onSession}>
+            {props.t("session.tab.session")}
+          </Tabs.Trigger>
+          <Tabs.Trigger
+            value="changes"
+            class="w-1/2 !border-r-0"
+            classes={{ button: "w-full" }}
+            onClick={props.onChanges}
+          >
+            <Switch>
+              <Match when={props.hasReview}>
+                {props.t("session.review.filesChanged", { count: props.reviewCount })}
+              </Match>
+              <Match when={true}>{props.t("session.review.change.other")}</Match>
+            </Switch>
+          </Tabs.Trigger>
+        </Tabs.List>
+      </Tabs>
+    </Show>
+  )
+}
diff --git a/packages/app/src/pages/session/session-prompt-dock.test.ts b/packages/app/src/pages/session/session-prompt-dock.test.ts
new file mode 100644
index 000000000..b3a9945d6
--- /dev/null
+++ b/packages/app/src/pages/session/session-prompt-dock.test.ts
@@ -0,0 +1,22 @@
+import { describe, expect, test } from "bun:test"
+import { questionSubtitle } from "./session-prompt-helpers"
+
+describe("questionSubtitle", () => {
+  const t = (key: string) => {
+    if (key === "ui.common.question.one") return "question"
+    if (key === "ui.common.question.other") return "questions"
+    return key
+  }
+
+  test("returns empty for zero", () => {
+    expect(questionSubtitle(0, t)).toBe("")
+  })
+
+  test("uses singular label", () => {
+    expect(questionSubtitle(1, t)).toBe("1 question")
+  })
+
+  test("uses plural label", () => {
+    expect(questionSubtitle(3, t)).toBe("3 questions")
+  })
+})
diff --git a/packages/app/src/pages/session/session-prompt-dock.tsx b/packages/app/src/pages/session/session-prompt-dock.tsx
new file mode 100644
index 000000000..697957027
--- /dev/null
+++ b/packages/app/src/pages/session/session-prompt-dock.tsx
@@ -0,0 +1,137 @@
+import { For, Show, type ComponentProps } from "solid-js"
+import { Button } from "@opencode-ai/ui/button"
+import { BasicTool } from "@opencode-ai/ui/basic-tool"
+import { PromptInput } from "@/components/prompt-input"
+import { QuestionDock } from "@/components/question-dock"
+import { questionSubtitle } from "@/pages/session/session-prompt-helpers"
+
+const questionDockRequest = (value: unknown) => value as ComponentProps<typeof QuestionDock>["request"]
+
+export function SessionPromptDock(props: {
+  centered: boolean
+  questionRequest: () => { questions: unknown[] } | undefined
+  permissionRequest: () => { patterns: string[]; permission: string } | undefined
+  blocked: boolean
+  promptReady: boolean
+  handoffPrompt?: string
+  t: (key: string, vars?: Record<string, string | number | boolean>) => string
+  responding: boolean
+  onDecide: (response: "once" | "always" | "reject") => void
+  inputRef: (el: HTMLDivElement) => void
+  newSessionWorktree: string
+  onNewSessionWorktreeReset: () => void
+  onSubmit: () => void
+  setPromptDockRef: (el: HTMLDivElement) => void
+}) {
+  return (
+    <div
+      ref={props.setPromptDockRef}
+      class="absolute inset-x-0 bottom-0 pt-12 pb-4 flex flex-col justify-center items-center z-50 bg-gradient-to-t from-background-stronger via-background-stronger to-transparent pointer-events-none"
+    >
+      <div
+        classList={{
+          "w-full px-4 pointer-events-auto": true,
+          "md:max-w-200 md:mx-auto 3xl:max-w-[1200px]": props.centered,
+        }}
+      >
+        <Show when={props.questionRequest()} keyed>
+          {(req) => {
+            const subtitle = questionSubtitle(req.questions.length, (key) => props.t(key))
+            return (
+              <div data-component="tool-part-wrapper" data-question="true" class="mb-3">
+                <BasicTool
+                  icon="bubble-5"
+                  locked
+                  defaultOpen
+                  trigger={{
+                    title: props.t("ui.tool.questions"),
+                    subtitle,
+                  }}
+                />
+                <QuestionDock request={questionDockRequest(req)} />
+              </div>
+            )
+          }}
+        </Show>
+
+        <Show when={props.permissionRequest()} keyed>
+          {(perm) => (
+            <div data-component="tool-part-wrapper" data-permission="true" class="mb-3">
+              <BasicTool
+                icon="checklist"
+                locked
+                defaultOpen
+                trigger={{
+                  title: props.t("notification.permission.title"),
+                  subtitle:
+                    perm.permission === "doom_loop"
+                      ? props.t("settings.permissions.tool.doom_loop.title")
+                      : perm.permission,
+                }}
+              >
+                <Show when={perm.patterns.length > 0}>
+                  <div class="flex flex-col gap-1 py-2 px-3 max-h-40 overflow-y-auto no-scrollbar">
+                    <For each={perm.patterns}>
+                      {(pattern) => <code class="text-12-regular text-text-base break-all">{pattern}</code>}
+                    </For>
+                  </div>
+                </Show>
+                <Show when={perm.permission === "doom_loop"}>
+                  <div class="text-12-regular text-text-weak pb-2 px-3">
+                    {props.t("settings.permissions.tool.doom_loop.description")}
+                  </div>
+                </Show>
+              </BasicTool>
+              <div data-component="permission-prompt">
+                <div data-slot="permission-actions">
+                  <Button
+                    variant="ghost"
+                    size="small"
+                    onClick={() => props.onDecide("reject")}
+                    disabled={props.responding}
+                  >
+                    {props.t("ui.permission.deny")}
+                  </Button>
+                  <Button
+                    variant="secondary"
+                    size="small"
+                    onClick={() => props.onDecide("always")}
+                    disabled={props.responding}
+                  >
+                    {props.t("ui.permission.allowAlways")}
+                  </Button>
+                  <Button
+                    variant="primary"
+                    size="small"
+                    onClick={() => props.onDecide("once")}
+                    disabled={props.responding}
+                  >
+                    {props.t("ui.permission.allowOnce")}
+                  </Button>
+                </div>
+              </div>
+            </div>
+          )}
+        </Show>
+
+        <Show when={!props.blocked}>
+          <Show
+            when={props.promptReady}
+            fallback={
+              <div class="w-full min-h-32 md:min-h-40 rounded-md border border-border-weak-base bg-background-base/50 px-4 py-3 text-text-weak whitespace-pre-wrap pointer-events-none">
+                {props.handoffPrompt || props.t("prompt.loading")}
+              </div>
+            }
+          >
+            <PromptInput
+              ref={props.inputRef}
+              newSessionWorktree={props.newSessionWorktree}
+              onNewSessionWorktreeReset={props.onNewSessionWorktreeReset}
+              onSubmit={props.onSubmit}
+            />
+          </Show>
+        </Show>
+      </div>
+    </div>
+  )
+}
diff --git a/packages/app/src/pages/session/session-prompt-helpers.ts b/packages/app/src/pages/session/session-prompt-helpers.ts
new file mode 100644
index 000000000..ac3234c93
--- /dev/null
+++ b/packages/app/src/pages/session/session-prompt-helpers.ts
@@ -0,0 +1,4 @@
+export const questionSubtitle = (count: number, t: (key: string) => string) => {
+  if (count === 0) return ""
+  return `${count} ${t(count > 1 ? "ui.common.question.other" : "ui.common.question.one")}`
+}
diff --git a/packages/app/src/pages/session/session-side-panel.tsx b/packages/app/src/pages/session/session-side-panel.tsx
new file mode 100644
index 000000000..573680dec
--- /dev/null
+++ b/packages/app/src/pages/session/session-side-panel.tsx
@@ -0,0 +1,306 @@
+import { For, Match, Show, Switch, createMemo, onCleanup, type JSX, type ValidComponent } from "solid-js"
+import { Tabs } from "@opencode-ai/ui/tabs"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { Tooltip, TooltipKeybind } from "@opencode-ai/ui/tooltip"
+import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
+import { Mark } from "@opencode-ai/ui/logo"
+import FileTree from "@/components/file-tree"
+import { SessionContextUsage } from "@/components/session-context-usage"
+import { SessionContextTab, SortableTab, FileVisual } from "@/components/session"
+import { DialogSelectFile } from "@/components/dialog-select-file"
+import { createFileTabListSync } from "@/pages/session/file-tab-scroll"
+import { FileTabContent } from "@/pages/session/file-tabs"
+import { StickyAddButton } from "@/pages/session/review-tab"
+import { DragDropProvider, DragDropSensors, DragOverlay, SortableProvider, closestCenter } from "@thisbeyond/solid-dnd"
+import { ConstrainDragYAxis } from "@/utils/solid-dnd"
+import type { DragEvent } from "@thisbeyond/solid-dnd"
+import { useComments } from "@/context/comments"
+import { useCommand } from "@/context/command"
+import { useDialog } from "@opencode-ai/ui/context/dialog"
+import { useFile, type SelectedLineRange } from "@/context/file"
+import { useLanguage } from "@/context/language"
+import { useLayout } from "@/context/layout"
+import { useSync } from "@/context/sync"
+
+export function SessionSidePanel(props: {
+  open: boolean
+  language: ReturnType<typeof useLanguage>
+  layout: ReturnType<typeof useLayout>
+  command: ReturnType<typeof useCommand>
+  dialog: ReturnType<typeof useDialog>
+  file: ReturnType<typeof useFile>
+  comments: ReturnType<typeof useComments>
+  sync: ReturnType<typeof useSync>
+  hasReview: boolean
+  reviewCount: number
+  reviewTab: boolean
+  contextOpen: () => boolean
+  openedTabs: () => string[]
+  activeTab: () => string
+  activeFileTab: () => string | undefined
+  tabs: () => ReturnType<ReturnType<typeof useLayout>["tabs"]>
+  openTab: (value: string) => void
+  showAllFiles: () => void
+  reviewPanel: () => JSX.Element
+  messages: () => unknown[]
+  visibleUserMessages: () => unknown[]
+  view: () => ReturnType<ReturnType<typeof useLayout>["view"]>
+  info: () => unknown
+  handoffFiles: () => Record<string, SelectedLineRange | null> | undefined
+  codeComponent: NonNullable<ValidComponent>
+  addCommentToContext: (input: {
+    file: string
+    selection: SelectedLineRange
+    comment: string
+    preview?: string
+    origin?: "review" | "file"
+  }) => void
+  activeDraggable: () => string | undefined
+  onDragStart: (event: unknown) => void
+  onDragEnd: () => void
+  onDragOver: (event: DragEvent) => void
+  fileTreeTab: () => "changes" | "all"
+  setFileTreeTabValue: (value: string) => void
+  diffsReady: boolean
+  diffFiles: string[]
+  kinds: Map<string, "add" | "del" | "mix">
+  activeDiff?: string
+  focusReviewDiff: (path: string) => void
+}) {
+  return (
+    <Show when={props.open}>
+      <aside
+        id="review-panel"
+        aria-label={props.language.t("session.panel.reviewAndFiles")}
+        class="relative flex-1 min-w-0 h-full border-l border-border-weak-base flex"
+      >
+        <div class="flex-1 min-w-0 h-full">
+          <Show
+            when={props.layout.fileTree.opened() && props.fileTreeTab() === "changes"}
+            fallback={
+              <DragDropProvider
+                onDragStart={props.onDragStart}
+                onDragEnd={props.onDragEnd}
+                onDragOver={props.onDragOver}
+                collisionDetector={closestCenter}
+              >
+                <DragDropSensors />
+                <ConstrainDragYAxis />
+                <Tabs value={props.activeTab()} onChange={props.openTab}>
+                  <div class="sticky top-0 shrink-0 flex">
+                    <Tabs.List
+                      ref={(el: HTMLDivElement) => {
+                        const stop = createFileTabListSync({ el, contextOpen: props.contextOpen })
+                        onCleanup(stop)
+                      }}
+                    >
+                      <Show when={props.reviewTab}>
+                        <Tabs.Trigger value="review" classes={{ button: "!pl-6" }}>
+                          <div class="flex items-center gap-1.5">
+                            <div>{props.language.t("session.tab.review")}</div>
+                            <Show when={props.hasReview}>
+                              <div class="text-12-medium text-text-strong h-4 px-2 flex flex-col items-center justify-center rounded-full bg-surface-base">
+                                {props.reviewCount}
+                              </div>
+                            </Show>
+                          </div>
+                        </Tabs.Trigger>
+                      </Show>
+                      <Show when={props.contextOpen()}>
+                        <Tabs.Trigger
+                          value="context"
+                          closeButton={
+                            <Tooltip value={props.language.t("common.closeTab")} placement="bottom">
+                              <IconButton
+                                icon="close-small"
+                                variant="ghost"
+                                class="h-5 w-5"
+                                onClick={() => props.tabs().close("context")}
+                                aria-label={props.language.t("common.closeTab")}
+                              />
+                            </Tooltip>
+                          }
+                          hideCloseButton
+                          onMiddleClick={() => props.tabs().close("context")}
+                        >
+                          <div class="flex items-center gap-2">
+                            <SessionContextUsage variant="indicator" />
+                            <div>{props.language.t("session.tab.context")}</div>
+                          </div>
+                        </Tabs.Trigger>
+                      </Show>
+                      <SortableProvider ids={props.openedTabs()}>
+                        <For each={props.openedTabs()}>
+                          {(tab) => <SortableTab tab={tab} onTabClose={props.tabs().close} />}
+                        </For>
+                      </SortableProvider>
+                      <StickyAddButton>
+                        <TooltipKeybind
+                          title={props.language.t("command.file.open")}
+                          keybind={props.command.keybind("file.open")}
+                          class="flex items-center"
+                        >
+                          <IconButton
+                            icon="plus-small"
+                            variant="ghost"
+                            iconSize="large"
+                            onClick={() =>
+                              props.dialog.show(() => <DialogSelectFile mode="files" onOpenFile={props.showAllFiles} />)
+                            }
+                            aria-label={props.language.t("command.file.open")}
+                          />
+                        </TooltipKeybind>
+                      </StickyAddButton>
+                    </Tabs.List>
+                  </div>
+
+                  <Show when={props.reviewTab}>
+                    <Tabs.Content value="review" class="flex flex-col h-full overflow-hidden contain-strict">
+                      <Show when={props.activeTab() === "review"}>{props.reviewPanel()}</Show>
+                    </Tabs.Content>
+                  </Show>
+
+                  <Tabs.Content value="empty" class="flex flex-col h-full overflow-hidden contain-strict">
+                    <Show when={props.activeTab() === "empty"}>
+                      <div class="relative pt-2 flex-1 min-h-0 overflow-hidden">
+                        <div class="h-full px-6 pb-42 flex flex-col items-center justify-center text-center gap-6">
+                          <Mark class="w-14 opacity-10" />
+                          <div class="text-14-regular text-text-weak max-w-56">
+                            {props.language.t("session.files.selectToOpen")}
+                          </div>
+                        </div>
+                      </div>
+                    </Show>
+                  </Tabs.Content>
+
+                  <Show when={props.contextOpen()}>
+                    <Tabs.Content value="context" class="flex flex-col h-full overflow-hidden contain-strict">
+                      <Show when={props.activeTab() === "context"}>
+                        <div class="relative pt-2 flex-1 min-h-0 overflow-hidden">
+                          <SessionContextTab
+                            messages={props.messages as never}
+                            visibleUserMessages={props.visibleUserMessages as never}
+                            view={props.view as never}
+                            info={props.info as never}
+                          />
+                        </div>
+                      </Show>
+                    </Tabs.Content>
+                  </Show>
+
+                  <Show when={props.activeFileTab()} keyed>
+                    {(tab) => (
+                      <FileTabContent
+                        tab={tab}
+                        activeTab={props.activeTab}
+                        tabs={props.tabs}
+                        view={props.view}
+                        handoffFiles={props.handoffFiles}
+                        file={props.file}
+                        comments={props.comments}
+                        language={props.language}
+                        codeComponent={props.codeComponent}
+                        addCommentToContext={props.addCommentToContext}
+                      />
+                    )}
+                  </Show>
+                </Tabs>
+                <DragOverlay>
+                  <Show when={props.activeDraggable()}>
+                    {(tab) => {
+                      const path = createMemo(() => props.file.pathFromTab(tab()))
+                      return (
+                        <div class="relative px-6 h-12 flex items-center bg-background-stronger border-x border-border-weak-base border-b border-b-transparent">
+                          <Show when={path()}>{(p) => <FileVisual active path={p()} />}</Show>
+                        </div>
+                      )
+                    }}
+                  </Show>
+                </DragOverlay>
+              </DragDropProvider>
+            }
+          >
+            {props.reviewPanel()}
+          </Show>
+        </div>
+
+        <Show when={props.layout.fileTree.opened()}>
+          <div
+            id="file-tree-panel"
+            class="relative shrink-0 h-full"
+            style={{ width: `${props.layout.fileTree.width()}px` }}
+          >
+            <div class="h-full border-l border-border-weak-base flex flex-col overflow-hidden group/filetree">
+              <Tabs
+                variant="pill"
+                value={props.fileTreeTab()}
+                onChange={props.setFileTreeTabValue}
+                class="h-full"
+                data-scope="filetree"
+              >
+                <Tabs.List>
+                  <Tabs.Trigger value="changes" class="flex-1" classes={{ button: "w-full" }}>
+                    {props.reviewCount}{" "}
+                    {props.language.t(
+                      props.reviewCount === 1 ? "session.review.change.one" : "session.review.change.other",
+                    )}
+                  </Tabs.Trigger>
+                  <Tabs.Trigger value="all" class="flex-1" classes={{ button: "w-full" }}>
+                    {props.language.t("session.files.all")}
+                  </Tabs.Trigger>
+                </Tabs.List>
+                <Tabs.Content value="changes" class="bg-background-base px-3 py-0">
+                  <Switch>
+                    <Match when={props.hasReview}>
+                      <Show
+                        when={props.diffsReady}
+                        fallback={
+                          <div class="px-2 py-2 text-12-regular text-text-weak">
+                            {props.language.t("common.loading")}
+                            {props.language.t("common.loading.ellipsis")}
+                          </div>
+                        }
+                      >
+                        <FileTree
+                          path=""
+                          allowed={props.diffFiles}
+                          kinds={props.kinds}
+                          draggable={false}
+                          active={props.activeDiff}
+                          onFileClick={(node) => props.focusReviewDiff(node.path)}
+                        />
+                      </Show>
+                    </Match>
+                    <Match when={true}>
+                      <div class="mt-8 text-center text-12-regular text-text-weak">
+                        {props.language.t("session.review.noChanges")}
+                      </div>
+                    </Match>
+                  </Switch>
+                </Tabs.Content>
+                <Tabs.Content value="all" class="bg-background-base px-3 py-0">
+                  <FileTree
+                    path=""
+                    modified={props.diffFiles}
+                    kinds={props.kinds}
+                    onFileClick={(node) => props.openTab(props.file.tab(node.path))}
+                  />
+                </Tabs.Content>
+              </Tabs>
+            </div>
+            <ResizeHandle
+              direction="horizontal"
+              edge="start"
+              size={props.layout.fileTree.width()}
+              min={200}
+              max={480}
+              collapseThreshold={160}
+              onResize={props.layout.fileTree.resize}
+              onCollapse={props.layout.fileTree.close}
+            />
+          </div>
+        </Show>
+      </aside>
+    </Show>
+  )
+}
diff --git a/packages/app/src/pages/session/terminal-label.ts b/packages/app/src/pages/session/terminal-label.ts
new file mode 100644
index 000000000..6d336769b
--- /dev/null
+++ b/packages/app/src/pages/session/terminal-label.ts
@@ -0,0 +1,16 @@
+export const terminalTabLabel = (input: {
+  title?: string
+  titleNumber?: number
+  t: (key: string, vars?: Record<string, string | number | boolean>) => string
+}) => {
+  const title = input.title ?? ""
+  const number = input.titleNumber ?? 0
+  const match = title.match(/^Terminal (\d+)$/)
+  const parsed = match ? Number(match[1]) : undefined
+  const isDefaultTitle = Number.isFinite(number) && number > 0 && Number.isFinite(parsed) && parsed === number
+
+  if (title && !isDefaultTitle) return title
+  if (number > 0) return input.t("terminal.title.numbered", { number })
+  if (title) return title
+  return input.t("terminal.title")
+}
diff --git a/packages/app/src/pages/session/terminal-panel.test.ts b/packages/app/src/pages/session/terminal-panel.test.ts
new file mode 100644
index 000000000..43eeec32f
--- /dev/null
+++ b/packages/app/src/pages/session/terminal-panel.test.ts
@@ -0,0 +1,25 @@
+import { describe, expect, test } from "bun:test"
+import { terminalTabLabel } from "./terminal-label"
+
+const t = (key: string, vars?: Record<string, string | number | boolean>) => {
+  if (key === "terminal.title.numbered") return `Terminal ${vars?.number}`
+  if (key === "terminal.title") return "Terminal"
+  return key
+}
+
+describe("terminalTabLabel", () => {
+  test("returns custom title unchanged", () => {
+    const label = terminalTabLabel({ title: "server", titleNumber: 3, t })
+    expect(label).toBe("server")
+  })
+
+  test("normalizes default numbered title", () => {
+    const label = terminalTabLabel({ title: "Terminal 2", titleNumber: 2, t })
+    expect(label).toBe("Terminal 2")
+  })
+
+  test("falls back to generic title", () => {
+    const label = terminalTabLabel({ title: "", titleNumber: 0, t })
+    expect(label).toBe("Terminal")
+  })
+})
diff --git a/packages/app/src/pages/session/terminal-panel.tsx b/packages/app/src/pages/session/terminal-panel.tsx
new file mode 100644
index 000000000..09095d689
--- /dev/null
+++ b/packages/app/src/pages/session/terminal-panel.tsx
@@ -0,0 +1,169 @@
+import { createMemo, For, Show } from "solid-js"
+import { Tabs } from "@opencode-ai/ui/tabs"
+import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
+import { IconButton } from "@opencode-ai/ui/icon-button"
+import { TooltipKeybind } from "@opencode-ai/ui/tooltip"
+import { DragDropProvider, DragDropSensors, DragOverlay, SortableProvider, closestCenter } from "@thisbeyond/solid-dnd"
+import type { DragEvent } from "@thisbeyond/solid-dnd"
+import { ConstrainDragYAxis } from "@/utils/solid-dnd"
+import { SortableTerminalTab } from "@/components/session"
+import { Terminal } from "@/components/terminal"
+import { useTerminal, type LocalPTY } from "@/context/terminal"
+import { useLanguage } from "@/context/language"
+import { useCommand } from "@/context/command"
+import { terminalTabLabel } from "@/pages/session/terminal-label"
+
+export function TerminalPanel(props: {
+  open: boolean
+  height: number
+  resize: (value: number) => void
+  close: () => void
+  terminal: ReturnType<typeof useTerminal>
+  language: ReturnType<typeof useLanguage>
+  command: ReturnType<typeof useCommand>
+  handoff: () => string[]
+  activeTerminalDraggable: () => string | undefined
+  handleTerminalDragStart: (event: unknown) => void
+  handleTerminalDragOver: (event: DragEvent) => void
+  handleTerminalDragEnd: () => void
+  onCloseTab: () => void
+}) {
+  return (
+    <Show when={props.open}>
+      <div
+        id="terminal-panel"
+        role="region"
+        aria-label={props.language.t("terminal.title")}
+        class="relative w-full flex flex-col shrink-0 border-t border-border-weak-base"
+        style={{ height: `${props.height}px` }}
+      >
+        <ResizeHandle
+          direction="vertical"
+          size={props.height}
+          min={100}
+          max={window.innerHeight * 0.6}
+          collapseThreshold={50}
+          onResize={props.resize}
+          onCollapse={props.close}
+        />
+        <Show
+          when={props.terminal.ready()}
+          fallback={
+            <div class="flex flex-col h-full pointer-events-none">
+              <div class="h-10 flex items-center gap-2 px-2 border-b border-border-weak-base bg-background-stronger overflow-hidden">
+                <For each={props.handoff()}>
+                  {(title) => (
+                    <div class="px-2 py-1 rounded-md bg-surface-base text-14-regular text-text-weak truncate max-w-40">
+                      {title}
+                    </div>
+                  )}
+                </For>
+                <div class="flex-1" />
+                <div class="text-text-weak pr-2">
+                  {props.language.t("common.loading")}
+                  {props.language.t("common.loading.ellipsis")}
+                </div>
+              </div>
+              <div class="flex-1 flex items-center justify-center text-text-weak">
+                {props.language.t("terminal.loading")}
+              </div>
+            </div>
+          }
+        >
+          <DragDropProvider
+            onDragStart={props.handleTerminalDragStart}
+            onDragEnd={props.handleTerminalDragEnd}
+            onDragOver={props.handleTerminalDragOver}
+            collisionDetector={closestCenter}
+          >
+            <DragDropSensors />
+            <ConstrainDragYAxis />
+            <div class="flex flex-col h-full">
+              <Tabs
+                variant="alt"
+                value={props.terminal.active()}
+                onChange={(id) => props.terminal.open(id)}
+                class="!h-auto !flex-none"
+              >
+                <Tabs.List class="h-10">
+                  <SortableProvider ids={props.terminal.all().map((t: LocalPTY) => t.id)}>
+                    <For each={props.terminal.all()}>
+                      {(pty) => (
+                        <SortableTerminalTab
+                          terminal={pty}
+                          onClose={() => {
+                            props.close()
+                            props.onCloseTab()
+                          }}
+                        />
+                      )}
+                    </For>
+                  </SortableProvider>
+                  <div class="h-full flex items-center justify-center">
+                    <TooltipKeybind
+                      title={props.language.t("command.terminal.new")}
+                      keybind={props.command.keybind("terminal.new")}
+                      class="flex items-center"
+                    >
+                      <IconButton
+                        icon="plus-small"
+                        variant="ghost"
+                        iconSize="large"
+                        onClick={props.terminal.new}
+                        aria-label={props.language.t("command.terminal.new")}
+                      />
+                    </TooltipKeybind>
+                  </div>
+                </Tabs.List>
+              </Tabs>
+              <div class="flex-1 min-h-0 relative">
+                <For each={props.terminal.all()}>
+                  {(pty) => (
+                    <div
+                      id={`terminal-wrapper-${pty.id}`}
+                      class="absolute inset-0"
+                      style={{
+                        display: props.terminal.active() === pty.id ? "block" : "none",
+                      }}
+                    >
+                      <Show when={pty.id} keyed>
+                        <Terminal
+                          pty={pty}
+                          onCleanup={props.terminal.update}
+                          onConnectError={() => props.terminal.clone(pty.id)}
+                        />
+                      </Show>
+                    </div>
+                  )}
+                </For>
+              </div>
+            </div>
+            <DragOverlay>
+              <Show when={props.activeTerminalDraggable()}>
+                {(draggedId) => {
+                  const pty = createMemo(() => props.terminal.all().find((t: LocalPTY) => t.id === draggedId()))
+                  return (
+                    <Show when={pty()}>
+                      {(t) => (
+                        <div class="relative p-1 h-10 flex items-center bg-background-stronger text-14-regular">
+                          {terminalTabLabel({
+                            title: t().title,
+                            titleNumber: t().titleNumber,
+                            t: props.language.t as (
+                              key: string,
+                              vars?: Record<string, string | number | boolean>,
+                            ) => string,
+                          })}
+                        </div>
+                      )}
+                    </Show>
+                  )
+                }}
+              </Show>
+            </DragOverlay>
+          </DragDropProvider>
+        </Show>
+      </div>
+    </Show>
+  )
+}
diff --git a/packages/app/src/pages/session/use-session-commands.test.ts b/packages/app/src/pages/session/use-session-commands.test.ts
new file mode 100644
index 000000000..ada1871e1
--- /dev/null
+++ b/packages/app/src/pages/session/use-session-commands.test.ts
@@ -0,0 +1,44 @@
+import { describe, expect, test } from "bun:test"
+import { canAddSelectionContext } from "./session-command-helpers"
+
+describe("canAddSelectionContext", () => {
+  test("returns false without active tab", () => {
+    expect(
+      canAddSelectionContext({
+        active: undefined,
+        pathFromTab: () => "src/a.ts",
+        selectedLines: () => ({ start: 1, end: 1 }),
+      }),
+    ).toBe(false)
+  })
+
+  test("returns false when active tab is not a file", () => {
+    expect(
+      canAddSelectionContext({
+        active: "context",
+        pathFromTab: () => undefined,
+        selectedLines: () => ({ start: 1, end: 1 }),
+      }),
+    ).toBe(false)
+  })
+
+  test("returns false without selected lines", () => {
+    expect(
+      canAddSelectionContext({
+        active: "file://src/a.ts",
+        pathFromTab: () => "src/a.ts",
+        selectedLines: () => null,
+      }),
+    ).toBe(false)
+  })
+
+  test("returns true when file and selection exist", () => {
+    expect(
+      canAddSelectionContext({
+        active: "file://src/a.ts",
+        pathFromTab: () => "src/a.ts",
+        selectedLines: () => ({ start: 1, end: 2 }),
+      }),
+    ).toBe(true)
+  })
+})
diff --git a/packages/app/src/pages/session/use-session-commands.tsx b/packages/app/src/pages/session/use-session-commands.tsx
new file mode 100644
index 000000000..ae845a657
--- /dev/null
+++ b/packages/app/src/pages/session/use-session-commands.tsx
@@ -0,0 +1,439 @@
+import { createMemo } from "solid-js"
+import { useNavigate, useParams } from "@solidjs/router"
+import { useCommand } from "@/context/command"
+import { useDialog } from "@opencode-ai/ui/context/dialog"
+import { useFile, selectionFromLines, type FileSelection } from "@/context/file"
+import { useLanguage } from "@/context/language"
+import { useLayout } from "@/context/layout"
+import { useLocal } from "@/context/local"
+import { usePermission } from "@/context/permission"
+import { usePrompt } from "@/context/prompt"
+import { useSDK } from "@/context/sdk"
+import { useSync } from "@/context/sync"
+import { useTerminal } from "@/context/terminal"
+import { DialogSelectFile } from "@/components/dialog-select-file"
+import { DialogSelectModel } from "@/components/dialog-select-model"
+import { DialogSelectMcp } from "@/components/dialog-select-mcp"
+import { DialogFork } from "@/components/dialog-fork"
+import { showToast } from "@opencode-ai/ui/toast"
+import { findLast } from "@opencode-ai/util/array"
+import { extractPromptFromParts } from "@/utils/prompt"
+import { UserMessage } from "@opencode-ai/sdk/v2"
+import { combineCommandSections } from "@/pages/session/helpers"
+import { canAddSelectionContext } from "@/pages/session/session-command-helpers"
+
+export const useSessionCommands = (input: {
+  command: ReturnType<typeof useCommand>
+  dialog: ReturnType<typeof useDialog>
+  file: ReturnType<typeof useFile>
+  language: ReturnType<typeof useLanguage>
+  local: ReturnType<typeof useLocal>
+  permission: ReturnType<typeof usePermission>
+  prompt: ReturnType<typeof usePrompt>
+  sdk: ReturnType<typeof useSDK>
+  sync: ReturnType<typeof useSync>
+  terminal: ReturnType<typeof useTerminal>
+  layout: ReturnType<typeof useLayout>
+  params: ReturnType<typeof useParams>
+  navigate: ReturnType<typeof useNavigate>
+  tabs: () => ReturnType<ReturnType<typeof useLayout>["tabs"]>
+  view: () => ReturnType<ReturnType<typeof useLayout>["view"]>
+  info: () => { revert?: { messageID?: string }; share?: { url?: string } } | undefined
+  status: () => { type: string }
+  userMessages: () => UserMessage[]
+  visibleUserMessages: () => UserMessage[]
+  activeMessage: () => UserMessage | undefined
+  showAllFiles: () => void
+  navigateMessageByOffset: (offset: number) => void
+  setExpanded: (id: string, fn: (open: boolean | undefined) => boolean) => void
+  setActiveMessage: (message: UserMessage | undefined) => void
+  addSelectionToContext: (path: string, selection: FileSelection) => void
+}) => {
+  const sessionCommands = createMemo(() => [
+    {
+      id: "session.new",
+      title: input.language.t("command.session.new"),
+      category: input.language.t("command.category.session"),
+      keybind: "mod+shift+s",
+      slash: "new",
+      onSelect: () => input.navigate(`/${input.params.dir}/session`),
+    },
+  ])
+
+  const fileCommands = createMemo(() => [
+    {
+      id: "file.open",
+      title: input.language.t("command.file.open"),
+      description: input.language.t("palette.search.placeholder"),
+      category: input.language.t("command.category.file"),
+      keybind: "mod+p",
+      slash: "open",
+      onSelect: () => input.dialog.show(() => <DialogSelectFile onOpenFile={input.showAllFiles} />),
+    },
+    {
+      id: "tab.close",
+      title: input.language.t("command.tab.close"),
+      category: input.language.t("command.category.file"),
+      keybind: "mod+w",
+      disabled: !input.tabs().active(),
+      onSelect: () => {
+        const active = input.tabs().active()
+        if (!active) return
+        input.tabs().close(active)
+      },
+    },
+  ])
+
+  const contextCommands = createMemo(() => [
+    {
+      id: "context.addSelection",
+      title: input.language.t("command.context.addSelection"),
+      description: input.language.t("command.context.addSelection.description"),
+      category: input.language.t("command.category.context"),
+      keybind: "mod+shift+l",
+      disabled: !canAddSelectionContext({
+        active: input.tabs().active(),
+        pathFromTab: input.file.pathFromTab,
+        selectedLines: input.file.selectedLines,
+      }),
+      onSelect: () => {
+        const active = input.tabs().active()
+        if (!active) return
+        const path = input.file.pathFromTab(active)
+        if (!path) return
+
+        const range = input.file.selectedLines(path)
+        if (!range) {
+          showToast({
+            title: input.language.t("toast.context.noLineSelection.title"),
+            description: input.language.t("toast.context.noLineSelection.description"),
+          })
+          return
+        }
+
+        input.addSelectionToContext(path, selectionFromLines(range))
+      },
+    },
+  ])
+
+  const viewCommands = createMemo(() => [
+    {
+      id: "terminal.toggle",
+      title: input.language.t("command.terminal.toggle"),
+      description: "",
+      category: input.language.t("command.category.view"),
+      keybind: "ctrl+`",
+      slash: "terminal",
+      onSelect: () => input.view().terminal.toggle(),
+    },
+    {
+      id: "review.toggle",
+      title: input.language.t("command.review.toggle"),
+      description: "",
+      category: input.language.t("command.category.view"),
+      keybind: "mod+shift+r",
+      onSelect: () => input.view().reviewPanel.toggle(),
+    },
+    {
+      id: "fileTree.toggle",
+      title: input.language.t("command.fileTree.toggle"),
+      description: "",
+      category: input.language.t("command.category.view"),
+      onSelect: () => {
+        const opening = !input.layout.fileTree.opened()
+        if (opening && !input.view().reviewPanel.opened()) input.view().reviewPanel.open()
+        input.layout.fileTree.toggle()
+      },
+    },
+    {
+      id: "terminal.new",
+      title: input.language.t("command.terminal.new"),
+      description: input.language.t("command.terminal.new.description"),
+      category: input.language.t("command.category.terminal"),
+      keybind: "ctrl+alt+t",
+      onSelect: () => {
+        if (input.terminal.all().length > 0) input.terminal.new()
+        input.view().terminal.open()
+      },
+    },
+    {
+      id: "steps.toggle",
+      title: input.language.t("command.steps.toggle"),
+      description: input.language.t("command.steps.toggle.description"),
+      category: input.language.t("command.category.view"),
+      keybind: "mod+e",
+      slash: "steps",
+      disabled: !input.params.id,
+      onSelect: () => {
+        const msg = input.activeMessage()
+        if (!msg) return
+        input.setExpanded(msg.id, (open: boolean | undefined) => !open)
+      },
+    },
+  ])
+
+  const messageCommands = createMemo(() => [
+    {
+      id: "message.previous",
+      title: input.language.t("command.message.previous"),
+      description: input.language.t("command.message.previous.description"),
+      category: input.language.t("command.category.session"),
+      keybind: "mod+arrowup",
+      disabled: !input.params.id,
+      onSelect: () => input.navigateMessageByOffset(-1),
+    },
+    {
+      id: "message.next",
+      title: input.language.t("command.message.next"),
+      description: input.language.t("command.message.next.description"),
+      category: input.language.t("command.category.session"),
+      keybind: "mod+arrowdown",
+      disabled: !input.params.id,
+      onSelect: () => input.navigateMessageByOffset(1),
+    },
+  ])
+
+  const agentCommands = createMemo(() => [
+    {
+      id: "model.choose",
+      title: input.language.t("command.model.choose"),
+      description: input.language.t("command.model.choose.description"),
+      category: input.language.t("command.category.model"),
+      keybind: "mod+'",
+      slash: "model",
+      onSelect: () => input.dialog.show(() => <DialogSelectModel />),
+    },
+    {
+      id: "mcp.toggle",
+      title: input.language.t("command.mcp.toggle"),
+      description: input.language.t("command.mcp.toggle.description"),
+      category: input.language.t("command.category.mcp"),
+      keybind: "mod+;",
+      slash: "mcp",
+      onSelect: () => input.dialog.show(() => <DialogSelectMcp />),
+    },
+    {
+      id: "agent.cycle",
+      title: input.language.t("command.agent.cycle"),
+      description: input.language.t("command.agent.cycle.description"),
+      category: input.language.t("command.category.agent"),
+      keybind: "mod+.",
+      slash: "agent",
+      onSelect: () => input.local.agent.move(1),
+    },
+    {
+      id: "agent.cycle.reverse",
+      title: input.language.t("command.agent.cycle.reverse"),
+      description: input.language.t("command.agent.cycle.reverse.description"),
+      category: input.language.t("command.category.agent"),
+      keybind: "shift+mod+.",
+      onSelect: () => input.local.agent.move(-1),
+    },
+    {
+      id: "model.variant.cycle",
+      title: input.language.t("command.model.variant.cycle"),
+      description: input.language.t("command.model.variant.cycle.description"),
+      category: input.language.t("command.category.model"),
+      keybind: "shift+mod+d",
+      onSelect: () => {
+        input.local.model.variant.cycle()
+      },
+    },
+  ])
+
+  const permissionCommands = createMemo(() => [
+    {
+      id: "permissions.autoaccept",
+      title:
+        input.params.id && input.permission.isAutoAccepting(input.params.id, input.sdk.directory)
+          ? input.language.t("command.permissions.autoaccept.disable")
+          : input.language.t("command.permissions.autoaccept.enable"),
+      category: input.language.t("command.category.permissions"),
+      keybind: "mod+shift+a",
+      disabled: !input.params.id || !input.permission.permissionsEnabled(),
+      onSelect: () => {
+        const sessionID = input.params.id
+        if (!sessionID) return
+        input.permission.toggleAutoAccept(sessionID, input.sdk.directory)
+        showToast({
+          title: input.permission.isAutoAccepting(sessionID, input.sdk.directory)
+            ? input.language.t("toast.permissions.autoaccept.on.title")
+            : input.language.t("toast.permissions.autoaccept.off.title"),
+          description: input.permission.isAutoAccepting(sessionID, input.sdk.directory)
+            ? input.language.t("toast.permissions.autoaccept.on.description")
+            : input.language.t("toast.permissions.autoaccept.off.description"),
+        })
+      },
+    },
+  ])
+
+  const sessionActionCommands = createMemo(() => [
+    {
+      id: "session.undo",
+      title: input.language.t("command.session.undo"),
+      description: input.language.t("command.session.undo.description"),
+      category: input.language.t("command.category.session"),
+      slash: "undo",
+      disabled: !input.params.id || input.visibleUserMessages().length === 0,
+      onSelect: async () => {
+        const sessionID = input.params.id
+        if (!sessionID) return
+        if (input.status()?.type !== "idle") {
+          await input.sdk.client.session.abort({ sessionID }).catch(() => {})
+        }
+        const revert = input.info()?.revert?.messageID
+        const message = findLast(input.userMessages(), (x) => !revert || x.id < revert)
+        if (!message) return
+        await input.sdk.client.session.revert({ sessionID, messageID: message.id })
+        const parts = input.sync.data.part[message.id]
+        if (parts) {
+          const restored = extractPromptFromParts(parts, { directory: input.sdk.directory })
+          input.prompt.set(restored)
+        }
+        const priorMessage = findLast(input.userMessages(), (x) => x.id < message.id)
+        input.setActiveMessage(priorMessage)
+      },
+    },
+    {
+      id: "session.redo",
+      title: input.language.t("command.session.redo"),
+      description: input.language.t("command.session.redo.description"),
+      category: input.language.t("command.category.session"),
+      slash: "redo",
+      disabled: !input.params.id || !input.info()?.revert?.messageID,
+      onSelect: async () => {
+        const sessionID = input.params.id
+        if (!sessionID) return
+        const revertMessageID = input.info()?.revert?.messageID
+        if (!revertMessageID) return
+        const nextMessage = input.userMessages().find((x) => x.id > revertMessageID)
+        if (!nextMessage) {
+          await input.sdk.client.session.unrevert({ sessionID })
+          input.prompt.reset()
+          const lastMsg = findLast(input.userMessages(), (x) => x.id >= revertMessageID)
+          input.setActiveMessage(lastMsg)
+          return
+        }
+        await input.sdk.client.session.revert({ sessionID, messageID: nextMessage.id })
+        const priorMsg = findLast(input.userMessages(), (x) => x.id < nextMessage.id)
+        input.setActiveMessage(priorMsg)
+      },
+    },
+    {
+      id: "session.compact",
+      title: input.language.t("command.session.compact"),
+      description: input.language.t("command.session.compact.description"),
+      category: input.language.t("command.category.session"),
+      slash: "compact",
+      disabled: !input.params.id || input.visibleUserMessages().length === 0,
+      onSelect: async () => {
+        const sessionID = input.params.id
+        if (!sessionID) return
+        const model = input.local.model.current()
+        if (!model) {
+          showToast({
+            title: input.language.t("toast.model.none.title"),
+            description: input.language.t("toast.model.none.description"),
+          })
+          return
+        }
+        await input.sdk.client.session.summarize({
+          sessionID,
+          modelID: model.id,
+          providerID: model.provider.id,
+        })
+      },
+    },
+    {
+      id: "session.fork",
+      title: input.language.t("command.session.fork"),
+      description: input.language.t("command.session.fork.description"),
+      category: input.language.t("command.category.session"),
+      slash: "fork",
+      disabled: !input.params.id || input.visibleUserMessages().length === 0,
+      onSelect: () => input.dialog.show(() => <DialogFork />),
+    },
+  ])
+
+  const shareCommands = createMemo(() => {
+    if (input.sync.data.config.share === "disabled") return []
+    return [
+      {
+        id: "session.share",
+        title: input.language.t("command.session.share"),
+        description: input.language.t("command.session.share.description"),
+        category: input.language.t("command.category.session"),
+        slash: "share",
+        disabled: !input.params.id || !!input.info()?.share?.url,
+        onSelect: async () => {
+          if (!input.params.id) return
+          await input.sdk.client.session
+            .share({ sessionID: input.params.id })
+            .then((res) => {
+              navigator.clipboard.writeText(res.data!.share!.url).catch(() =>
+                showToast({
+                  title: input.language.t("toast.session.share.copyFailed.title"),
+                  variant: "error",
+                }),
+              )
+            })
+            .then(() =>
+              showToast({
+                title: input.language.t("toast.session.share.success.title"),
+                description: input.language.t("toast.session.share.success.description"),
+                variant: "success",
+              }),
+            )
+            .catch(() =>
+              showToast({
+                title: input.language.t("toast.session.share.failed.title"),
+                description: input.language.t("toast.session.share.failed.description"),
+                variant: "error",
+              }),
+            )
+        },
+      },
+      {
+        id: "session.unshare",
+        title: input.language.t("command.session.unshare"),
+        description: input.language.t("command.session.unshare.description"),
+        category: input.language.t("command.category.session"),
+        slash: "unshare",
+        disabled: !input.params.id || !input.info()?.share?.url,
+        onSelect: async () => {
+          if (!input.params.id) return
+          await input.sdk.client.session
+            .unshare({ sessionID: input.params.id })
+            .then(() =>
+              showToast({
+                title: input.language.t("toast.session.unshare.success.title"),
+                description: input.language.t("toast.session.unshare.success.description"),
+                variant: "success",
+              }),
+            )
+            .catch(() =>
+              showToast({
+                title: input.language.t("toast.session.unshare.failed.title"),
+                description: input.language.t("toast.session.unshare.failed.description"),
+                variant: "error",
+              }),
+            )
+        },
+      },
+    ]
+  })
+
+  input.command.register("session", () =>
+    combineCommandSections([
+      sessionCommands(),
+      fileCommands(),
+      contextCommands(),
+      viewCommands(),
+      messageCommands(),
+      agentCommands(),
+      permissionCommands(),
+      sessionActionCommands(),
+      shareCommands(),
+    ]),
+  )
+}
diff --git a/packages/app/src/pages/session/use-session-hash-scroll.test.ts b/packages/app/src/pages/session/use-session-hash-scroll.test.ts
new file mode 100644
index 000000000..844f5451e
--- /dev/null
+++ b/packages/app/src/pages/session/use-session-hash-scroll.test.ts
@@ -0,0 +1,16 @@
+import { describe, expect, test } from "bun:test"
+import { messageIdFromHash } from "./use-session-hash-scroll"
+
+describe("messageIdFromHash", () => {
+  test("parses hash with leading #", () => {
+    expect(messageIdFromHash("#message-abc123")).toBe("abc123")
+  })
+
+  test("parses raw hash fragment", () => {
+    expect(messageIdFromHash("message-42")).toBe("42")
+  })
+
+  test("ignores non-message anchors", () => {
+    expect(messageIdFromHash("#review-panel")).toBeUndefined()
+  })
+})
diff --git a/packages/app/src/pages/session/use-session-hash-scroll.ts b/packages/app/src/pages/session/use-session-hash-scroll.ts
new file mode 100644
index 000000000..8952bbd98
--- /dev/null
+++ b/packages/app/src/pages/session/use-session-hash-scroll.ts
@@ -0,0 +1,174 @@
+import { createEffect, on, onCleanup } from "solid-js"
+import { UserMessage } from "@opencode-ai/sdk/v2"
+
+export const messageIdFromHash = (hash: string) => {
+  const value = hash.startsWith("#") ? hash.slice(1) : hash
+  const match = value.match(/^message-(.+)$/)
+  if (!match) return
+  return match[1]
+}
+
+export const useSessionHashScroll = (input: {
+  sessionKey: () => string
+  sessionID: () => string | undefined
+  messagesReady: () => boolean
+  visibleUserMessages: () => UserMessage[]
+  turnStart: () => number
+  currentMessageId: () => string | undefined
+  pendingMessage: () => string | undefined
+  setPendingMessage: (value: string | undefined) => void
+  setActiveMessage: (message: UserMessage | undefined) => void
+  setTurnStart: (value: number) => void
+  scheduleTurnBackfill: () => void
+  autoScroll: { pause: () => void; forceScrollToBottom: () => void }
+  scroller: () => HTMLDivElement | undefined
+  anchor: (id: string) => string
+  scheduleScrollState: (el: HTMLDivElement) => void
+  consumePendingMessage: (key: string) => string | undefined
+}) => {
+  const clearMessageHash = () => {
+    if (!window.location.hash) return
+    window.history.replaceState(null, "", window.location.href.replace(/#.*$/, ""))
+  }
+
+  const updateHash = (id: string) => {
+    window.history.replaceState(null, "", `#${input.anchor(id)}`)
+  }
+
+  const scrollToElement = (el: HTMLElement, behavior: ScrollBehavior) => {
+    const root = input.scroller()
+    if (!root) return false
+
+    const a = el.getBoundingClientRect()
+    const b = root.getBoundingClientRect()
+    const top = a.top - b.top + root.scrollTop
+    root.scrollTo({ top, behavior })
+    return true
+  }
+
+  const scrollToMessage = (message: UserMessage, behavior: ScrollBehavior = "smooth") => {
+    input.setActiveMessage(message)
+
+    const msgs = input.visibleUserMessages()
+    const index = msgs.findIndex((m) => m.id === message.id)
+    if (index !== -1 && index < input.turnStart()) {
+      input.setTurnStart(index)
+      input.scheduleTurnBackfill()
+
+      requestAnimationFrame(() => {
+        const el = document.getElementById(input.anchor(message.id))
+        if (!el) {
+          requestAnimationFrame(() => {
+            const next = document.getElementById(input.anchor(message.id))
+            if (!next) return
+            scrollToElement(next, behavior)
+          })
+          return
+        }
+        scrollToElement(el, behavior)
+      })
+
+      updateHash(message.id)
+      return
+    }
+
+    const el = document.getElementById(input.anchor(message.id))
+    if (!el) {
+      updateHash(message.id)
+      requestAnimationFrame(() => {
+        const next = document.getElementById(input.anchor(message.id))
+        if (!next) return
+        if (!scrollToElement(next, behavior)) return
+      })
+      return
+    }
+    if (scrollToElement(el, behavior)) {
+      updateHash(message.id)
+      return
+    }
+
+    requestAnimationFrame(() => {
+      const next = document.getElementById(input.anchor(message.id))
+      if (!next) return
+      if (!scrollToElement(next, behavior)) return
+    })
+    updateHash(message.id)
+  }
+
+  const applyHash = (behavior: ScrollBehavior) => {
+    const hash = window.location.hash.slice(1)
+    if (!hash) {
+      input.autoScroll.forceScrollToBottom()
+      const el = input.scroller()
+      if (el) input.scheduleScrollState(el)
+      return
+    }
+
+    const messageId = messageIdFromHash(hash)
+    if (messageId) {
+      input.autoScroll.pause()
+      const msg = input.visibleUserMessages().find((m) => m.id === messageId)
+      if (msg) {
+        scrollToMessage(msg, behavior)
+        return
+      }
+      return
+    }
+
+    const target = document.getElementById(hash)
+    if (target) {
+      input.autoScroll.pause()
+      scrollToElement(target, behavior)
+      return
+    }
+
+    input.autoScroll.forceScrollToBottom()
+    const el = input.scroller()
+    if (el) input.scheduleScrollState(el)
+  }
+
+  createEffect(
+    on(input.sessionKey, (key) => {
+      if (!input.sessionID()) return
+      const messageID = input.consumePendingMessage(key)
+      if (!messageID) return
+      input.setPendingMessage(messageID)
+    }),
+  )
+
+  createEffect(() => {
+    if (!input.sessionID() || !input.messagesReady()) return
+    requestAnimationFrame(() => applyHash("auto"))
+  })
+
+  createEffect(() => {
+    if (!input.sessionID() || !input.messagesReady()) return
+
+    input.visibleUserMessages().length
+    input.turnStart()
+
+    const targetId = input.pendingMessage() ?? messageIdFromHash(window.location.hash)
+    if (!targetId) return
+    if (input.currentMessageId() === targetId) return
+
+    const msg = input.visibleUserMessages().find((m) => m.id === targetId)
+    if (!msg) return
+
+    if (input.pendingMessage() === targetId) input.setPendingMessage(undefined)
+    input.autoScroll.pause()
+    requestAnimationFrame(() => scrollToMessage(msg, "auto"))
+  })
+
+  createEffect(() => {
+    if (!input.sessionID() || !input.messagesReady()) return
+    const handler = () => requestAnimationFrame(() => applyHash("auto"))
+    window.addEventListener("hashchange", handler)
+    onCleanup(() => window.removeEventListener("hashchange", handler))
+  })
+
+  return {
+    clearMessageHash,
+    scrollToMessage,
+    applyHash,
+  }
+}