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/tasks/WP2-macp-package.md

@@ -101,7 +101,7 @@ packages/macp/
 
 ```json
 {
-  "name": "@mosaic/macp",
+  "name": "@mosaicstack/macp",
   "version": "0.0.1",
   "type": "module",
   "exports": {
@@ -146,5 +146,5 @@ Port ALL existing Python tests as TypeScript equivalents:
 
 After this package is built:
 
-- `packages/coord` should import `@mosaic/macp` for event emission and gate types
-- `plugins/macp` should import `@mosaic/macp` for credential resolution and protocol types
+- `packages/coord` should import `@mosaicstack/macp` for event emission and gate types
+- `plugins/macp` should import `@mosaicstack/macp` for credential resolution and protocol types