WIP: Migrate calendar integration frontend to React Query

- Migrate all calendar components from useApi to React Query hooks
- Fix Chakra UI v3 compatibility issues (Card, Progress, spacing props, leftIcon)
- Update backend Meeting model to include calendar fields
- Replace imperative API calls with declarative React Query patterns
- Remove old OpenAPI generated files that conflict with new structure

www/app/[roomName]/useRoomMeeting.tsx

@@ -47,7 +47,6 @@ const useRoomMeeting = (
         const meeting = JSON.parse(storedMeeting);
         sessionStorage.removeItem(`meeting_${roomName}`); // Clean up
         setResponse(meeting);
-        setLoading(false);
         return;
       } catch (e) {
         console.error("Failed to parse stored meeting:", e);