refactor: remove api-types.ts compatibility layer

- Migrated all 29 files from api-types.ts to use reflector-api.d.ts directly
- Removed $SourceKind manual enum in favor of OpenAPI-generated types
- Fixed unrelated Spinner component TypeScript error in AuthWrapper.tsx
- All imports now use: import type { components } from "path/to/reflector-api"
- Deleted api-types.ts file completely

www/app/(app)/transcripts/useTopicWithWords.ts

@@ -1,6 +1,9 @@
-import { GetTranscriptTopicWithWordsPerSpeaker } from "../../lib/api-types";
+import type { components } from "../../reflector-api";
 import { useTranscriptTopicsWithWordsPerSpeaker } from "../../lib/api-hooks";
 
+type GetTranscriptTopicWithWordsPerSpeaker =
+  components["schemas"]["GetTranscriptTopicWithWordsPerSpeaker"];
+
 type ErrorTopicWithWords = {
   error: Error;
   loading: false;