Группы: приглашения вместо авто-добавления (согласиться/отказаться)

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

backend/app/main.py

@@ -15,7 +15,17 @@ from starlette.middleware.base import BaseHTTPMiddleware
 from app.core import security
 from app.core.config import settings
 from app.core.errors import AppError, app_error_handler
-from app.routers import achievements, admin, auth, groups, matches, reference, stats, users
+from app.routers import (
+    achievements,
+    admin,
+    auth,
+    groups,
+    invitations,
+    matches,
+    reference,
+    stats,
+    users,
+)
 
 # Каталог со сборкой фронта (в Docker — backend/static; локально может отсутствовать).
 _STATIC_DIR = Path(os.getenv("STATIC_DIR", str(Path(__file__).resolve().parent.parent / "static")))
@@ -106,8 +116,9 @@ def create_app() -> FastAPI:
         )
 
     # API-роутеры под /api.
-    api_routers = [auth.router, users.router, groups.router, matches.router,
-                   reference.router, stats.router, achievements.router, admin.router]
+    api_routers = [auth.router, users.router, groups.router, invitations.router,
+                   matches.router, reference.router, stats.router, achievements.router,
+                   admin.router]
     for r in api_routers:
         app.include_router(r, prefix="/api")