* fix(app): restore smart Changes comparison selection
The tab migration persisted the selected comparison, pinning Changes to an empty view after checkout state changed. Keep comparison overrides ephemeral per surface and expire them when dirtiness changes, while preserving only presentation state in tabs.
* chore(app): date Changes compatibility cleanup
* feat(app): let the file panel close its tree rail
The file panel's tree rail was permanent on desktop — the changes panel
had a folder-tree toggle in its toolbar, the file toolbar had nothing, so
the rail was there whether you wanted it or not.
The changes panel's private DesktopTreeToggle becomes a shared
TreeRailToggle so both toolbars render the same affordance; that also
drops the treeToggleStyle prop threaded through ChangesToolbarProps,
which recomputed exactly what the component already built internally.
The i18n keys move out of workspace.git.diff into workspace.tree, since a
shared component reaching into the git namespace would rot.
The two rails keep independent flags — the file rail in panel-store, the
changes rail in useChangesPreferences — so closing one leaves the other
alone. FileTreeToggle wires itself to the store rather than taking a
callback: the bar renders several components below FilePanel, where the
rail actually lives.
Both rails also get narrower (320 -> 260 default, 200 -> 180 minimum).
The persist version bump resets treeRailWidth on purpose: nearly every
existing install carries the old 320 default, so without the reset the
narrower rail would only ever reach new users. Anyone who dragged their
rail to a deliberate custom width loses it once.
Note that MIN_CONTENT_WIDTH still clamps the rail to
`containerWidth - 240`, so in a narrow pane the new default never
applies — that floor, not the default, is what sets the width there.
* feat(app): make the side panel an empty workspace surface
The fixed, hideable side panel keeps supporting context beside an agent without seeding content. Pane-local choices stay local, while implicit supporting opens follow a persisted routing preference.
* test(app): exercise side panel policy through its capability boundary
The browser rail journey already covers the real tree-toggle behavior. Side-panel policy tests now pass their platform capability through the public boundary instead of replacing a production module.
* test(app): expect an empty side panel after upgrade
* test(app): expect an empty first split pane
* test(app): account for the empty side panel in split retention
* feat(app): make workspace panel tabs independent
Give explicit New actions fresh tab instances, keep panel state opaque to tab management, preserve File navigation context, and stabilize uncached File transitions.
* fix(app): preserve file conflicts during preview refresh
Keep the current preview mounted for same-target reads and conversions so the editor retains its conflict observation state. Clear retained previews only when the file target changes.
Size tabs from rendered labels and switch to horizontal overflow once minimum click targets are reached, keeping the add-tab action adjacent until it must remain fixed.
Make Changes an always-expanded document with an optional desktop navigation tree, keep Git actions in their platform-owned headers, remove pinned and inline split shortcuts, and place review tabs beside Changes.
* feat(app): add persistent workspace side panes
Keep the common review and file-browsing workflow beside the active agent without tearing down pane contents. Workspace tabs now share one compact chip language, assistant file links route into the retained right pane, and diff/file trees share stable geometry.
* fix(app): localize pull request empty state
* test(app): update explorer pane coverage
* fix(app): preserve explorer pane workflows
* test(app): make explorer tab selection idempotent
* fix(app): persist workspace review pins
* fix(app): preserve sidebar scrim drag hook
* fix(app): restore companion pane interactions
* test(app): follow selected sidebar surface
* fix: reject oversized checkout diffs
* fix(diff): keep large previews from disconnecting clients
The physical socket limit is an OOM backstop, not a frame-size contract. Bound structured diff construction incrementally and report oversized previews without closing the client's socket.
* fix(app): preserve oversized diff state
* fix(diff): stay within relay frame limit
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Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
Open the complete working comparison in a desktop workspace tab while preserving inline sidebar diffs when the tab is closed.
Working and commit comparisons share one diff panel, and workspace layout is the sole owner of live tab persistence and identity.
Refs #1520
