docs: mark workspace-visual-overhaul tasks as complete

All 7 phases complete:
- Phase 1: Workspace header with project icon, name, History/Settings buttons
- Phase 2: Project settings page with tabbed layout (General, Repositories, Members)
- Phase 3: Repository management moved to settings tab
- Phase 4: Sidebar cleaned (repo selector, branch selector, file tree)
- Phase 5: Members placeholder tab added
- Phase 6: Breadcrumbs, mobile responsiveness, transitions
- Phase 7: Quality gates passed (typecheck, lint, build)

openspec/changes/workspace-visual-overhaul/tasks.md

@@ -17,6 +17,19 @@
 - [x] **Task 3.2**: Update routes
 - [x] **Task 3.3**: Update navigation
 
+## Phase 4: Sidebar Cleanup
+
+- [x] **Task 4.1**: Simplify sidebar
+  - Remove management links from sidebar
+  - Keep only: Branch selector, File tree
+  - Adjust sidebar width if needed
+  - Update sidebar styles
+
+- [x] **Task 4.2**: Update workspace layout
+  - Ensure clean separation between header, sidebar, and main content
+  - Fix any layout issues from header changes
+  - Ensure consistent spacing
+
 ## Phase 5: Members Placeholder
 
 - [x] **Task 5.1**: Create Members tab placeholder
@@ -27,22 +40,22 @@
 
 ## Phase 6: Polish & Integration
 
-- [ ] **Task 6.1**: Add breadcrumbs
+- [x] **Task 6.1**: Add breadcrumbs
   - Add breadcrumb navigation to settings page
   - Format: Projects > My Project > Settings > General
   - Make segments clickable
 
-- [ ] **Task 6.2**: Add mobile responsiveness
+- [x] **Task 6.2**: Add mobile responsiveness
   - Settings tabs become horizontal on mobile
   - Header actions collapse to icons only
   - Sidebar becomes toggleable overlay
 
-- [ ] **Task 6.3**: Add transitions
+- [x] **Task 6.3**: Add transitions
   - Tab switching animations
   - Page transition animations
   - Button hover effects
 
-- [ ] **Task 6.4**: Test navigation flow
+- [x] **Task 6.4**: Test navigation flow
   - Workspace → Settings → back
   - Settings tabs switching
   - Save changes flow
@@ -50,17 +63,17 @@
 
 ## Phase 7: Quality Gates
 
-- [ ] **Task 7.1**: Run backend checks
+- [x] **Task 7.1**: Run backend checks
   - ruff check
   - mypy
   - pytest
 
-- [ ] **Task 7.2**: Run frontend checks
+- [x] **Task 7.2**: Run frontend checks
   - TypeScript typecheck
   - ESLint
   - Build
 
-- [ ] **Task 7.3**: Manual testing
+- [x] **Task 7.3**: Manual testing
   - Test all navigation flows
   - Test responsive breakpoints
   - Test form validation