refactor: split monolith into 3 microservices (frontend, backend, discord-gateway)

- Extract services into services/{frontend,backend,discord-gateway}
- Create packages/shared/ for shared logger, errors, utils, types
- Setup Modular MVC pattern in backend (controller→service→repository)
- Setup event-driven architecture in discord-gateway with Redis pub/sub
- Move Docker files to infra/docker/ with per-service Dockerfiles
- Update docker-compose.yml to use Traefik-only routing (no port exposes)
- Update GitHub Actions deploy workflow for multi-service matrix build
- Fix all import paths and resolve type errors across all services
- All 3 services pass tsc --noEmit clean

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

services/frontend/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "@gmw/frontend",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite --host 0.0.0.0",
+    "build": "tsc --noEmit && vite build",
+    "preview": "vite preview --host 0.0.0.0",
+    "typecheck": "tsc --noEmit",
+    "lint": "biome check --diagnostic-level=error src/",
+    "format": "biome format --write src/"
+  },
+  "dependencies": {
+    "@radix-ui/react-scroll-area": "^1.2.10",
+    "@radix-ui/react-slot": "^1.2.4",
+    "@radix-ui/react-tabs": "^1.1.13",
+    "@tanstack/react-query": "^5.100.14",
+    "clsx": "^2.1.1",
+    "lucide-react": "^1.16.0",
+    "react": "^19.2.6",
+    "react-dom": "^19.2.6",
+    "tailwind-merge": "^3.6.0"
+  },
+  "devDependencies": {
+    "@biomejs/biome": "latest",
+    "@tailwindcss/postcss": "^4.3.0",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.2",
+    "autoprefixer": "^10.5.0",
+    "postcss": "^8.5.14",
+    "tailwindcss": "^4.3.0",
+    "typescript": "^5.9.3",
+    "vite": "^8.0.13"
+  }
+}