tui: fix task status to show current tool state from message store

3 files changed, 22 insertions, 8 deletions

diff --git a/AGENTS.md b/AGENTS.md
index 8cfe768da..3df71f641 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -12,6 +12,7 @@
 - Prefer single word variable names where possible
 - Use Bun APIs when possible, like `Bun.file()`
 - Rely on type inference when possible; avoid explicit type annotations or interfaces unless necessary for exports or clarity
+- Prefer functional array methods (flatMap, filter, map) over for loops; use type guards on filter to maintain type inference downstream
 
 ### Avoid let statements
 
diff --git a/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx b/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
index ada84e487..209469bad 100644
--- a/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
+++ b/packages/opencode/src/cli/cmd/tui/routes/session/index.tsx
@@ -1799,9 +1799,19 @@ function Task(props: ToolProps<typeof TaskTool>) {
   const keybind = useKeybind()
   const { navigate } = useRoute()
   const local = useLocal()
+  const sync = useSync()
+
+  const tools = createMemo(() => {
+    const sessionID = props.metadata.sessionId
+    const msgs = sync.data.message[sessionID ?? ""] ?? []
+    return msgs.flatMap((msg) =>
+      (sync.data.part[msg.id] ?? [])
+        .filter((part): part is ToolPart => part.type === "tool")
+        .map((part) => ({ tool: part.tool, state: part.state })),
+    )
+  })
 
-  const current = createMemo(() => props.metadata.summary?.findLast((x) => x.state.status !== "pending"))
-  const color = createMemo(() => local.agent.color(props.input.subagent_type ?? "unknown"))
+  const current = createMemo(() => tools().findLast((x) => x.state.status !== "pending"))
 
   return (
     <Switch>
@@ -1817,13 +1827,17 @@ function Task(props: ToolProps<typeof TaskTool>) {
         >
           <box>
             <text style={{ fg: theme.textMuted }}>
-              {props.input.description} ({props.metadata.summary?.length ?? 0} toolcalls)
+              {props.input.description} ({tools().length} toolcalls)
             </text>
             <Show when={current()}>
-              <text style={{ fg: current()!.state.status === "error" ? theme.error : theme.textMuted }}>
-                └ {Locale.titlecase(current()!.tool)}{" "}
-                {current()!.state.status === "completed" ? current()!.state.title : ""}
-              </text>
+              {(item) => {
+                const title = item().state.status === "completed" ? (item().state as any).title : ""
+                return (
+                  <text style={{ fg: item().state.status === "error" ? theme.error : theme.textMuted }}>
+                    └ {Locale.titlecase(item().tool)} {title}
+                  </text>
+                )
+              }}
             </Show>
           </box>
           <Show when={props.metadata.sessionId}>
diff --git a/packages/opencode/src/tool/task.ts b/packages/opencode/src/tool/task.ts
index ad4268b7b..ac28d9f32 100644
--- a/packages/opencode/src/tool/task.ts
+++ b/packages/opencode/src/tool/task.ts
@@ -130,7 +130,6 @@ export const TaskTool = Tool.define("task", async (ctx) => {
         ctx.metadata({
           title: params.description,
           metadata: {
-            summary: Object.values(parts).sort((a, b) => a.id.localeCompare(b.id)),
             sessionId: session.id,
             model,
           },