Changes
PR #2235 by ksylvan: fix: honor configured yt-dlp arguments for REST API transcripts
- Fixed the REST API so that configured yt-dlp arguments are honored for transcript requests.
- Passed flag and configuration arguments through to the YouTube plugin.
- Applied plugin arguments to both plain and timestamped transcripts.
- Added server wiring tests to verify yt-dlp argument propagation.
- Documented configuration support for the REST transcript endpoint.