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/framework/defaults/README.md

@@ -31,7 +31,7 @@ The installer:
 
 - Downloads the framework from the monorepo archive
 - Installs it to `~/.config/mosaic/`
-- Installs `@mosaic/cli` globally via npm (TUI, gateway client, wizard)
+- Installs `@mosaicstack/cli` globally via npm (TUI, gateway client, wizard)
 - Adds `~/.config/mosaic/bin` to your PATH
 - Syncs runtime adapters and skills
 - Runs a health audit