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/(app)/transcripts/useTopics.ts

@@ -4,7 +4,7 @@ import { useError } from "../../(errors)/errorContext";
 import { Topic } from "./webSocketTypes";
 import useApi from "../../lib/useApi";
 import { shouldShowError } from "../../lib/errorUtils";
-import { GetTranscriptTopic } from "../../api";
+import { GetTranscriptTopic } from "../../lib/api-types";
 
 type TranscriptTopics = {
   topics: GetTranscriptTopic[] | null;