refactor: rename api-hooks.ts to apiHooks.ts for consistency

- Renamed api-hooks.ts to apiHooks.ts to follow camelCase convention
- Updated all 21 import statements across the codebase
- Maintains consistency with other non-component files (apiClient.tsx, useAuthReady.ts, etc.)
- Follows established naming pattern: PascalCase for components, camelCase for utilities/hooks

www/app/(app)/transcripts/useMp3.ts

@@ -1,6 +1,6 @@
 import { useContext, useEffect, useState } from "react";
 import { DomainContext } from "../../domainContext";
-import { useTranscriptGet } from "../../lib/api-hooks";
+import { useTranscriptGet } from "../../lib/apiHooks";
 import { useSession } from "next-auth/react";
 
 export type Mp3Response = {