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

CLAUDE.md

@@ -26,13 +26,13 @@ pnpm test             # Vitest (all packages)
 pnpm build            # Build all packages
 
 # Database
-pnpm --filter @mosaic/db db:push      # Push schema to PG (dev)
-pnpm --filter @mosaic/db db:generate  # Generate migrations
-pnpm --filter @mosaic/db db:migrate   # Run migrations
+pnpm --filter @mosaicstack/db db:push      # Push schema to PG (dev)
+pnpm --filter @mosaicstack/db db:generate  # Generate migrations
+pnpm --filter @mosaicstack/db db:migrate   # Run migrations
 
 # Dev
 docker compose up -d                  # Start PG, Valkey, OTEL, Jaeger
-pnpm --filter @mosaic/gateway exec tsx src/main.ts  # Start gateway
+pnpm --filter @mosaicstack/gateway exec tsx src/main.ts  # Start gateway
 ```
 
 ## Conventions