feat: web UI chat render, panels, presence + analytics

backend/src/api/routers/chats.py

@@ -13,7 +13,9 @@ from utils.read.models import (
     MessageVersionView,
     MessageView,
     Page,
+    PinnedView,
 )
+from utils.read.pinned import get_pinned
 
 router = APIRouter(prefix="/api", tags=["chats"], route_class=DishkaRoute)
 
@@ -55,6 +57,13 @@ async def chat_history(
     )
 
 
+@router.get("/chats/{chat_id}/pinned")
+async def chat_pinned(
+    pool: FromDishka[asyncpg.Pool], chat_id: int, account_id: AccountId
+) -> PinnedView | None:
+    return await get_pinned(pool, account_id, chat_id)
+
+
 @router.post("/chats/{chat_id}/enrich")
 async def enrich_chat(
     pool: FromDishka[asyncpg.Pool], chat_id: int, body: EnrichRequest