feat(01-07): close Phase 1 — REQ-video-ring-buffer complete, SPEC §10 #7 satisfied
Phase 1 closure 2026-05-15 — both acceptance gates green:
- D-12 ffprobe structural gate: `ffprobe -v error -f matroska -i
tests/fixtures/last_30sec.webm` exit 0 (cd61cbc)
- A3 empirical-playback gate: operator confirmed clean end-to-end Chrome
playback (no ~1 s freeze); ffmpeg `-v warning -i fixture -f null -`
exit 0 with zero decoder errors (only expected muxer DTS-monotonicity
warnings at segment join boundaries — documented D-13 trade-off for
multi-EBML-header WebM concat; Chrome's MSE pipeline handles this
natively, satisfying SPEC §10 #7)
Changes:
- .planning/REQUIREMENTS.md
* REQ-video-ring-buffer checkbox [ ] -> [x]; description AMENDED to
document the D-13 restart-segments lifecycle replacing D-09..D-11;
SPEC §10 #2, #3, #7 noted as green 2026-05-15
* Traceability table row: REQ-video-ring-buffer | Phase 1 | Complete
(was Pending)
- .planning/ROADMAP.md
* Phase 1 list-item flipped [ ] -> [x] with closure date + summary
* Phase 1 Success Criteria 1, 2, 3 individually checked off; criterion 2
re-worded to reflect D-13 segment-cycling (replacing the original
single-continuous-recorder wording from D-09..D-11)
* Plan list: 01-07-PLAN.md flipped [ ] -> [x] with closure note
* Progress table row: 7/7 Complete 2026-05-15 (was 6/7 In Progress)
* Phase 5 P1/P2 list: appended `getDisplayMedia` cursor visibility
constraint (`video: { cursor: 'always' }`) — surfaced as user
observation during Phase 1 smoke 2026-05-15
- .planning/STATE.md
* Frontmatter: status -> phase_complete, completed_phases 0 -> 1,
completed_plans 6 -> 7, percent 86 -> 100; stopped_at + last_activity
rewritten for closure narrative
* Current Position: Phase 1 COMPLETE, next Phase 2 of 5, Plan 7/7
complete, progress bar [██████████] 100% Phase 1
* Performance Metrics: Phase 1 row populated (7 plans, ~50 min); added
Plan 07 row with closure narrative incl. the two debug sessions
* Decisions log: appended [Phase 01-07-closure] decision and
[Phase 01-07-deferred-to-5] note for the cursor-visibility refinement
* Session Continuity: rewritten for closure; resume file points to the
Plan 07 SUMMARY (commit 3)
* Added "Phase 1 Closure Notes" block with ffprobe + ffmpeg gates,
fixture metadata, test counts, criteria green-status, and a process
retro candidate (auto-injection of empirical-acceptance gates when
RESEARCH.md flags HIGH-risk assumptions)
Refs: .planning/debug/resolved/d12-blob-port-transfer-fails.md,
.planning/debug/resolved/webm-playback-freeze.md
Mark
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