fix: resolve import errors and add missing api hooks

- Create constants.ts for RECORD_A_MEETING_URL
- Add api-types.ts for backward compatible type exports
- Update all imports from deleted api folder to new locations
- Add missing React Query hooks for rooms and zulip operations
- Create useApi compatibility layer for unmigrated components

www/app/[roomName]/page.tsx

@@ -24,7 +24,7 @@ import { notFound } from "next/navigation";
 import useSessionStatus from "../lib/useSessionStatus";
 import { useRecordingConsent } from "../recordingConsentContext";
 import useApi from "../lib/useApi";
-import { Meeting } from "../api";
+import { Meeting } from "../lib/api-types";
 import { FaBars } from "react-icons/fa6";
 
 export type RoomDetails = {