The session sidebar already uses project grouping, so the change adds header-level project actions instead of replacing project row controls. Sorting and organization choices are persisted through the existing desktop UI preferences file and mirrored into local cache for startup continuity.
Constraint: Keep the existing project tree, drag ordering, pinning, hiding, and Finder project-row actions intact.
Rejected: Replacing project row actions with the header menu | row-level Finder and per-project session actions are still useful and already covered by tests.
Confidence: high
Scope-risk: moderate
Directive: Do not store sidebar organization in global Claude settings; keep it under cc-haha desktop-ui preferences.
Tested: cd desktop && bun run test -- src/components/layout/Sidebar.test.tsx
Tested: bun test src/server/__tests__/desktop-ui-preferences.test.ts
Tested: cd desktop && bun run lint
Tested: cd desktop && bun run build