SCENE_FONT defaults in config.js point at Debian's font layout, which does
not exist in the Alpine runtime image; drawtext only rendered via fontconfig
fallback. Pin the Alpine paths in the Dockerfile env.
Also add LAST_STATE.md (E2E test results + approved plan for the OBS-style
panel rework) and the OBS reference screenshot for the redesign.
Co-Authored-By: Claude Code <noreply@anthropic.com>