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

apps/web/playwright.config.ts

@@ -7,7 +7,7 @@ import { defineConfig, devices } from '@playwright/test';
  *   - Next.js web app running on http://localhost:3000
  *   - NestJS gateway running on http://localhost:14242
  *
- * Run with:   pnpm --filter @mosaic/web test:e2e
+ * Run with:   pnpm --filter @mosaicstack/web test:e2e
  */
 export default defineConfig({
   testDir: './e2e',