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

packages/mosaic/src/index.ts

@@ -3,9 +3,14 @@ export const VERSION = '0.0.0';
 export {
   backgroundUpdateCheck,
   checkForUpdate,
+  checkForAllUpdates,
   formatUpdateNotice,
+  formatAllPackagesTable,
   getInstallCommand,
+  getInstallAllCommand,
   getInstalledVersion,
   getLatestVersion,
   semverLt,
+  type UpdateCheckResult,
+  type PackageUpdateResult,
 } from './runtime/update-checker.js';