feat: wire growth report API and worker

.env.example

@@ -11,3 +11,12 @@ SESSION_SECRET=replace-with-at-least-32-random-characters
 CURSOR_SECRET=replace-with-a-different-32-character-secret
 FRONTEND_ORIGIN=http://127.0.0.1:5173
 COOKIE_SECURE=false
+AI_GROWTH_ENABLED=false
+AVALAI_API_KEY=
+AVALAI_BASE_URL=https://api.avalai.ir
+AVALAI_MODEL=gpt-5-mini-2025-08-07
+AI_DAILY_REQUEST_BUDGET=0
+AI_DAILY_TOKEN_BUDGET=0
+AI_MAX_CONCURRENT=4
+AI_CREATE_PER_MINUTE=10
+AI_UNCACHED_SCOPES_PER_DAY=5