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

.woodpecker/ci.yml

@@ -59,7 +59,7 @@ steps:
           sleep 1
         done
       # Run migrations (DATABASE_URL is set in environment above)
-      - pnpm --filter @mosaic/db run db:migrate
+      - pnpm --filter @mosaicstack/db run db:migrate
       # Run all tests
       - pnpm test
     depends_on: