feat: SAC Telegram settings view, notify_problem severity gate, exclusive docs

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/api/v1/router.py

@@ -1,6 +1,6 @@
 from fastapi import APIRouter
 
-from app.api.v1 import auth, dashboards, events, health, hosts, problems, stream
+from app.api.v1 import auth, dashboards, events, health, hosts, problems, settings, stream
 
 api_router = APIRouter()
 api_router.include_router(health.router)
@@ -9,4 +9,5 @@ api_router.include_router(events.router)
 api_router.include_router(hosts.router)
 api_router.include_router(problems.router)
 api_router.include_router(dashboards.router)
+api_router.include_router(settings.router)
 api_router.include_router(stream.router)