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Rebuild the workspace home as a Windows 8 Start-screen-style tile grid,
replacing the max-w-3xl vertical card list.
Pure core (zero DOM/Svelte/fetch, fully unit-tested):
- logic/tile-layout.ts — geometryFor(width, height) resolves WIDE (4 fixed
~120px rows, column-wise flow, 4x2 span cap) or TALL (2 fixed columns,
row-wise flow, 2x2 cap); pack() is the ONLY order->coordinates transform
(greedy first-fit in fill order, hole-free, render-clamped per geometry);
firstEmptySlot/insertAtFirstEmptySlot/mergeLayout/resizeTile/moveTile/
sortByRecentActivity/sanitizeLayout. Persisted data is
orientation-independent {version:1, tiles:[{id,colSpan,rowSpan,order}]} —
order + spans only, never positions; the same data renders in either
geometry (spans clamp for the render, persisted values untouched).
- logic/drag-controller.ts — pure pointer/press state machine: mouse
threshold-drag + tap-open; touch long-press lifts + selects, pre-lift
movement cancels so vertical scrolling never fights the gesture.
Shell:
- tile-layout-store.svelte.ts — thin reactive wrapper persisting through
the injected createLocalStore adapter (dispatch.workspaces.tiles), ops:
sync/resize/move/placeFirstEmpty/sortByRecentActivity.
- ui/HomeTileGrid.svelte — CSS-grid tile canvas (wide: horizontal scroll +
snap + wheel pan + pan arrow + scroll indicator; tall: native vertical
scroll), FLIP-animated reflow, drag ghost, transient resize preview.
- ui/HomeHeader.svelte — fixed chrome: Dispatch display title, New
workspace popover (same slug validation; creates via create-on-miss and
does NOT navigate — the new tile lands in the first empty slot in fill
order and enters rename mode), global Plugins button, sort-by-recent
overflow; compact icon buttons + bottom sheet on tall screens.
- ui/WorkspaceTile.svelte — tile face (title, /slug, conversation count,
relative last-activity, live active dots, starred tint); inline rename
with the old card's semantics.
- ui/TileActionBar.svelte — slides up on select (right-click / long-press):
Open, Rename, Resize, Star/Unstar, Details, Plugins, Delete (old confirm
+ store call preserved).
- ui/ResizePicker.svelte — Word-style insert-table hover grid (wide 4x2 /
tall 2x2) with arrow/Enter/Escape support and ghost preview on commit.
- ui/WorkspaceDetails.svelte — flyout holding the old card's default-cwd
input + default-computer select (same store calls + error states).
- WorkspacesHome.svelte orchestrates; App.svelte untouched (same props).
- WorkspaceCard.svelte is removed (replaced by the tile system).
Manual tile order rules; starred workspaces get a tint (star is no longer
a sort key); workspaces unknown to the layout append at the end.
vitest: jsdom gains PointerEvent (MouseEvent-based) + Element.animate
stubs — the pointer logic is the outermost edge for the drag tests.
Verification: svelte-check 0/0, vitest 1655 passed (102 files, twice),
biome clean, vite build OK.
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