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/gateway/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@mosaic/gateway",
+  "name": "@mosaicstack/gateway",
   "version": "0.0.6",
   "repository": {
     "type": "git",
@@ -31,18 +31,18 @@
     "@mariozechner/pi-ai": "^0.65.0",
     "@mariozechner/pi-coding-agent": "^0.65.0",
     "@modelcontextprotocol/sdk": "^1.27.1",
-    "@mosaic/auth": "workspace:^",
-    "@mosaic/brain": "workspace:^",
-    "@mosaic/config": "workspace:^",
-    "@mosaic/coord": "workspace:^",
-    "@mosaic/db": "workspace:^",
-    "@mosaic/discord-plugin": "workspace:^",
-    "@mosaic/log": "workspace:^",
-    "@mosaic/memory": "workspace:^",
-    "@mosaic/queue": "workspace:^",
-    "@mosaic/storage": "workspace:^",
-    "@mosaic/telegram-plugin": "workspace:^",
-    "@mosaic/types": "workspace:^",
+    "@mosaicstack/auth": "workspace:^",
+    "@mosaicstack/brain": "workspace:^",
+    "@mosaicstack/config": "workspace:^",
+    "@mosaicstack/coord": "workspace:^",
+    "@mosaicstack/db": "workspace:^",
+    "@mosaicstack/discord-plugin": "workspace:^",
+    "@mosaicstack/log": "workspace:^",
+    "@mosaicstack/memory": "workspace:^",
+    "@mosaicstack/queue": "workspace:^",
+    "@mosaicstack/storage": "workspace:^",
+    "@mosaicstack/telegram-plugin": "workspace:^",
+    "@mosaicstack/types": "workspace:^",
     "@nestjs/common": "^11.0.0",
     "@nestjs/core": "^11.0.0",
     "@nestjs/platform-fastify": "^11.0.0",