- Add ts-ebml ^3.0.2 (parse half) and webm-muxer ^5.1.4 (write half) per
CONTEXT.md amendment D-14-remux; both MIT, both verified SW-compatible
in the d13 debug-session library survey.
- tests/background/webm-remux-deps.test.ts pins two contracts:
(a) named exports surface (Muxer + ArrayBufferTarget + Decoder).
(b) both libraries import cleanly when window/document are absent on
globalThis — guards the published dist against accidentally
acquiring DOM globals on the hot path that would crash the
Chrome service-worker runtime.
- Note: webm-muxer 5.1.4 upstream-deprecated in favor of Mediabunny; the
pinned version still meets the d13 architectural requirement
(single-EBML output via addVideoChunkRaw). Migration to Mediabunny is
out of scope for Plan 01-08 and would require a new ADR.
- Baseline 53 GREEN + 2 new GREEN; tsc clean; 2 webm-playback duration
RED still pending (drive to GREEN in Tasks 3-5).
