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/scratchpads/ci-docker-publish-20260330.md

@@ -21,7 +21,7 @@
   - `pnpm typecheck`
   - `pnpm format:check`
   - `docker compose up -d`
-  - `pnpm --filter @mosaic/db db:push`
+  - `pnpm --filter @mosaicstack/db db:push`
   - `pnpm test`
   - `pnpm build`
   - Manual review of `.woodpecker/ci.yml` diff: publish steps are main-only, depend on `build`, and use secret-backed registry auth plus dual tags.