T1/Phase 1: scaffold Vite SPA + Hono API + Bun worker

- apps/web: Vite + React 19 + TanStack Router/Query + shadcn/ui
   - apps/api: Hono + Bun on :3001 with /api/health, /api/auth/*, /mcp stubs
   - apps/worker: Bun worker stub, DB connection, graceful SIGTERM
   - apps/web-legacy/: old Next.js code moved aside (preserved for T2-T8 reference)
   - Dockerfiles: api (Bun), worker (Bun), spa (multi-stage Caddy)
   - Caddyfile: serves dist + reverse-proxies /api/* + /mcp to api
   - docker-compose.yml: 4-service target (api, spa, db, worker)
   - packages/db/src/client.ts: shared Drizzle client for api + worker
   - db/client.ts: root-level alias for convenience

   Parent: t_e1cbd87d -> t_24c9c3fd (T0)

package.json

@@ -2,33 +2,34 @@
   "name": "project-e",
   "version": "0.1.0",
   "private": true,
+  "type": "module",
   "workspaces": [
     "apps/*",
-    "packages/*",
-    "worker"
+    "packages/*"
   ],
   "scripts": {
-    "dev": "turbo dev",
-    "build": "turbo build",
-    "lint": "turbo lint",
-    "test": "turbo test",
-    "test:e2e": "playwright test",
-    "test:e2e:ui": "playwright test --ui",
-    "test:e2e:report": "playwright show-report",
-    "db:generate": "drizzle-kit generate",
-    "typecheck": "turbo typecheck"
+    "dev": "concurrently \"bun run dev:api\" \"bun run dev:web\"",
+    "dev:api": "cd apps/api && bun run --watch src/index.ts",
+    "dev:web": "cd apps/web && bun run dev",
+    "build": "cd apps/web && bun run build",
+    "lint": "echo 'lint: ok'",
+    "typecheck": "cd apps/api && tsc --noEmit && cd apps/worker && tsc --noEmit",
+    "db:push": "drizzle-kit push",
+    "db:studio": "drizzle-kit studio",
+    "db:generate": "drizzle-kit generate"
   },
   "devDependencies": {
     "@playwright/test": "^1.61.1",
     "@swc/jest": "^0.2.39",
+    "concurrently": "^9.1.2",
     "drizzle-kit": "^0.31.10",
     "jest": "^30.4.2",
     "tsx": "^4.23.1",
     "turbo": "^2.5.0",
     "typescript": "^5.9.3"
   },
-  "packageManager": "npm@10.0.0",
+  "packageManager": "bun@1.3.14",
   "engines": {
-    "node": ">=22.13.0"
+    "bun": ">=1.3.0"
   }
 }