[codex] Add pinned projects to menu bar

[spaceshipmike]

Summary

• replace the tray click-to-open behavior with a menu containing Open App, Pinned Projects, Preferences, and Quit Setlist
• add durable pinned-project preferences plus IPC/preload/renderer APIs for pinning and tray navigation
• let pinned project menu items open the registered folder in Finder, with Option-click routing into the Setlist project detail view
• keep sidebar quick access useful by showing recent non-archived projects when no visible pins exist, and filter archived pins consistently
• stop tracking the generated .fctry/state.json file so local workflow state stays out of Git

Review Fixes

• archived raw pinned names no longer render through the renderer fallback
• empty pinned prefs now show a Recent fallback instead of a dead empty Pinned section
• added pure renderer helper tests for archived pins, recent fallback, current-first ordering, and pin/unpin name updates

Validation

• npm test
• npm exec -- vitest run packages/app/src/renderer/components/AppSidebar.test.ts packages/app/src/main/prefs.test.ts
• npm exec -- tsc --noEmit -p packages/app/tsconfig.main.json
• npm exec -- tsc --noEmit -p packages/app/tsconfig.preload.json
• git diff --check

Known Baseline

• npm exec -- tsc --noEmit -p packages/app/tsconfig.renderer.json still fails on existing errors in RegisterProjectDialog.tsx and OverviewTab.tsx, unrelated to this change.