Workspace file preview is a local desktop surface, so image files should not be blocked by the text preview byte cap. Large text files now return a bounded preview instead of an unusable too-large state, while binary files remain explicitly unsupported.
Constraint: Avoid unbounded text payloads that can freeze the desktop renderer
Rejected: Remove all read limits | large generated files can still overload JSON transport and syntax rendering
Confidence: high
Scope-risk: moderate
Directive: Keep image preview detection before text-size limiting so local images remain renderable
Tested: bun test src/server/__tests__/workspace-service.test.ts
Tested: bun test src/server/__tests__/sessions.test.ts
Tested: cd desktop && bun run lint
Tested: cd desktop && bun run test -- src/components/workspace/WorkspacePanel.test.tsx
Tested: cd desktop && bun run build
Not-tested: Full packaged macOS smoke after this commit
Expose a workspace inspector for desktop sessions so users can browse the active project, preview files, inspect session-derived changes, and review diffs even when the work directory is not a git repository.
Constraint: The workspace view must work for temporary and non-git project directories.
Rejected: Rely only on git status | non-git sessions would lose the changed-files surface.
Confidence: medium
Scope-risk: moderate
Directive: Keep undo semantics separate from workspace browsing; checkpoint-backed rewind should remain the source of truth for rollback.
Tested: bun test src/server/__tests__/sessions.test.ts src/server/__tests__/workspace-service.test.ts
Tested: cd desktop && bun run test -- src/components/workspace/WorkspacePanel.test.tsx src/stores/workspacePanelStore.test.ts
Tested: cd desktop && bun run lint
Tested: git diff --check
Not-tested: Full desktop packaged app build after this commit
The desktop terminal already supported independent PTY sessions, but it only lived inside settings. This change promotes it to a first-class tab workflow so users can open multiple host terminals without leaving the chat-oriented desktop layout.
Constraint: Tauri terminal sessions are process-backed and must stay mounted while switching tabs.
Rejected: Reuse the settings terminal as a navigated page only | it cannot support multiple independent terminal tabs.
Rejected: Hide inactive xterm panes with display none | xterm lost visible output after tab switches during E2E.
Confidence: high
Scope-risk: moderate
Directive: Keep inactive terminal panes mounted and avoid display none unless xterm repaint behavior is reverified.
Tested: bun run test src/components/layout/ContentRouter.test.tsx src/components/layout/Sidebar.test.tsx src/components/layout/TabBar.test.tsx src/pages/TerminalSettings.test.tsx
Tested: bun run lint
Tested: bun run build
Tested: ./scripts/build-macos-arm64.sh
Tested: Computer Use E2E against build-artifacts/macos-arm64 app for multiple terminals, command output retention, tab switching, and terminal cleanup
Not-tested: Intel macOS package
The pointer-drag rewrite left the tab close control without its hover trigger,
so tabs could still be closed logically but no longer exposed the affordance.
This restores the hover group, trims the close icon to a lighter visual weight,
and adds a regression test to keep close-click behavior from colliding with drag.
Constraint: Tab close must remain compatible with the custom pointer-drag reorder flow
Rejected: Reintroduce a larger hoverable close button | made the tab chrome look visually heavy
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep the close control visually subordinate to the tab label and verify drag-click interactions before changing tab hit areas
Tested: cd desktop && bun run test -- TabBar; cd desktop && bun run lint
Not-tested: Full desktop app manual visual QA in Tauri runtime
The tab strip was relying on browser drag-and-drop, which worked in the web UI
but did not reliably start inside the macOS overlay title bar in the packaged
Tauri desktop app. This switches tab reordering to a pointer-driven interaction
that computes insertion positions directly, keeps the drag indicator behavior,
and preserves the separate window-drag fallback for non-tab title-bar space.
Constraint: Must work inside the macOS overlay title bar where native window hit-testing interferes with browser drag events
Rejected: Keep tuning draggable/drop handling | web behavior stayed fine while desktop never consistently entered the drag sequence
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep tab reordering on explicit pointer handling unless the title-bar architecture changes away from overlay hit-testing
Tested: bun run test -- src/components/layout/TabBar.test.tsx; bun run lint; bun run build
Not-tested: Manual packaged desktop app verification after this commit
The recent macOS title-bar drag fix marked the entire session tab strip as a
native drag region. That restored window movement in the overlay title area,
but it also intercepted the tab component's own HTML drag events and regressed
manual tab reordering. This narrows the native drag surface to a small gutter
beside the tabs while keeping the explicit empty-space startDragging fallback,
and adds a focused regression test for drag-to-reorder.
Constraint: Must preserve window dragging from non-tab title-bar space on macOS overlay windows
Rejected: Keep the whole tab bar as a drag region | conflicts with tab-level drag-and-drop reordering
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Do not reapply data-tauri-drag-region to the full tab strip unless tab reordering is redesigned around a different drag mechanism
Tested: bun run test -- src/components/layout/TabBar.test.tsx; bun run lint; bun run build
Not-tested: Manual desktop runtime verification after this commit
The macOS desktop build could lose its draggable gutter on the right side of
the tab bar once multiple session tabs consumed the native overlay title area.
This adds a Tauri window-drag fallback for clicks on the tab strip's empty
space while preserving tab and control interactions, and locks that behavior
with focused regression tests.
Constraint: Must preserve tab clicks, close buttons, and overflow controls while restoring drag behavior
Rejected: Rework the title bar layout around a dedicated spacer | larger UI diff for a narrow hit-testing bug
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep drag fallback limited to true empty gutter hits; do not trigger it from interactive tab descendants
Tested: bun run test src/components/layout/TabBar.test.tsx; bun run lint; bun run build; manual macOS app verification
Not-tested: Windows runtime drag behavior was not manually exercised after this change
Related: #92
- Tab drag-and-drop reordering with visual drop indicator
- Add moveTab action to tabStore with localStorage persistence
- Context menu: add "Close Left" and "Close All" options
- Add i18n translations for new menu items (en/zh)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- TabBar: darker background (surface-container), active tab uses top brand
accent + lighter bg, consistent bottom border, draggable empty area
- Settings sidebar width matches TAB_WIDTH (180px) for vertical alignment
- Remove rounded corners and side borders from tabs for cleaner look
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The 38px absolute drag overlay was blocking tab clicks, requiring
padding that created a visible gap. Sidebar already handles its own
drag region, and TabBar uses data-tauri-drag-region directly.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Move Tauri title bar padding into TabBar instead of main container,
eliminating the double spacing (38px gap + 36px tab bar)
- Remove StatusBar entirely (project/model info already in ChatInput)
- TabBar renders a drag region spacer even when no tabs are open
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Settings and Scheduled Tasks now open as special tabs in the TabBar,
matching IDE conventions (closeable, icon-prefixed, persistent)
- New Session directly creates a session with the current workDir
- ChatInput shows DirectoryPicker before first message, locks after
- Remove connection status from StatusBar (unnecessary noise)
- ContentRouter routes by tab type instead of activeView
- Settings page no longer has a back-button header
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
