Module split: extract yt-dlp lifecycle helpers to server/ytdlp.js
• checkYtdlp() — version + GitHub-latest check (24h-cached)
• autoUpdateYtdlp(dataDir) — multi-strategy update (-U, pip, brew, binary)
Module-private memoization (ytdlpVersion, ytdlpLastCheck) now stays
inside ytdlp.js where it belongs. autoUpdateYtdlp gained an explicit
dataDir parameter — strategy 4 (StartOS binary download to /data/bin/)
needs it; passing it in keeps the module pure of caller-side state.
server/index.js: 2694 → 2614 lines.
Smoke tested: server boots; /api/license-status, /api/health respond.
No behavior change.
Keysat
9a82fede7a