fix: rename all packages from @mosaic/* to @mosaicstack/*

- Updated all package.json name fields and dependency references
- Updated all TypeScript/JavaScript imports
- Updated .woodpecker/publish.yml filters and registry paths
- Updated tools/install.sh scope default
- Updated .npmrc registry paths (worktree + host)
- Enhanced update-checker.ts with checkForAllUpdates() multi-package support
- Updated CLI update command to show table of all packages
- Added KNOWN_PACKAGES, formatAllPackagesTable, getInstallAllCommand
- Marked checkForUpdate() with @deprecated JSDoc

Closes #391

docs/PRD-TUI_Improvements.md

@@ -57,7 +57,7 @@ Multi-panel layout with keyboard navigation.
 
 - **Ink 5** (React for CLI) — already in deps
 - **Component architecture** — break monolithic `app.tsx` into composable components
-- **Typed Socket.IO events** — leverage `@mosaic/types` `ServerToClientEvents` / `ClientToServerEvents`
+- **Typed Socket.IO events** — leverage `@mosaicstack/types` `ServerToClientEvents` / `ClientToServerEvents`
 - **Local state only** (Wave 1) — cwd/branch read from `process.cwd()` and `git` at startup
 - **Gateway metadata** (future) — extend socket handshake or add REST endpoint for model info, token usage