MyAnythingList v116 debug package

Root files:
- index_beta_2026-05-23-v116.html
- frame-test.html
- README.txt

Open frame-test.html, then click Beta Debug.

Beta Debug opens:
./index_beta_2026-05-23-v116.html?debug=frames

v116 focus:
- Start playlist fetch/parse at DOMContentLoaded instead of waiting for window load.
- Avoid playlist cache-busting unless ?fresh=1, ?cacheBust=1, or ?playlistBust=1 is used.
- Commit playlist Language before command-bar reveal.
- Add frame-debug timing marks for playlist fetch, parse, feed count, controls, wall rebuild, and load reuse.
