Files
mokosh/.planning/STATE.md
Mark 872f25d649 docs(fix-a3): resolve webm-playback-freeze debug session, update STATE
Closes the second debug session in Phase 1's life (after d12). Both
sessions resolved fast — ~30 min for d12, ~15 min for the RED-test
landing in this one — because the planner had explicitly pre-staged
contingencies (D-12 ffprobe gate + D-13 restart-segments skeleton)
for the assumptions RESEARCH.md flagged HIGH-risk. Neither was a
planning oversight; both were the documented HIGH-risk assumption
activating as expected.

Changes:
- Moved .planning/debug/webm-playback-freeze.md →
  .planning/debug/resolved/webm-playback-freeze.md (status:
  root-cause-confirmed → resolved).
- Added the Resolution section: root-cause one-liner, applied-fix
  description, the 5 files-changed list, the 6 fix-a3 commit hashes,
  the in-tree verification matrix, and the explicit operator
  next-step (re-run ./smoke.sh, verify Chrome playback +
  ffmpeg-clean stderr + the 2 webm-playback.test.ts assertions
  flipping GREEN, then Phase 1 closes).
- Updated STATE.md frontmatter `stopped_at`, the Decisions log
  with a [Phase 01-07-debug-a3] entry summarising D-13 activation
  + the type renames + the retired old-API surface, and the
  Session Continuity block (timestamp, stopped_at narrative,
  resume-file pointer).

Phase 1 close is still pending operator regen of
tests/fixtures/last_30sec.webm. REQ-video-ring-buffer must not
be marked complete by this commit — Plan 07's §10 #7 acceptance
criterion owns that and only the in-Chrome playback + ffmpeg-clean
stderr (against a freshly regenerated fixture) can close it.
2026-05-15 21:18:36 +02:00

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---
gsd_state_version: 1.0
milestone: v2.0.0
milestone_name: milestone
status: executing
stopped_at: D-13 restart-segments activated (debug session webm-playback-freeze resolved). Six commits on gsd/phase-01-stabilize-video-pipeline (5530292, 6a1a034, 670daa3, f81438d, 87909d9 + this docs commit). 28/30 vitest pass — the 2 reds are the empirical ffmpeg dry-runs in tests/offscreen/webm-playback.test.ts; they stay RED until the operator regenerates tests/fixtures/last_30sec.webm via ./smoke.sh. The production-driven RED block in segment-keyframes.test.ts is fully GREEN (getSegments exported, MAX_SEGMENTS=3 contract met). 8 new tests in segment-rotation.test.ts pin the new ring-buffer invariants. tsc clean, npm run build succeeds. D-09..D-11 retired; old API surface (addChunk/trimAged/firstChunkSaved/isFirst) fully removed. Plan 07 §10 #7 still owned by operator: re-run ./smoke.sh, verify playback in Chrome + ffmpeg-clean stderr, then close REQ-video-ring-buffer.
last_updated: "2026-05-15T21:18:00.000Z"
last_activity: 2026-05-15
progress:
total_phases: 5
completed_phases: 0
total_plans: 7
completed_plans: 6
percent: 86
---
# Project State
## Project Reference
See: .planning/PROJECT.md (updated 2026-05-15)
**Core value:** When an operator hits a bug, one click MUST produce a
self-contained archive that lets support reproduce what happened — in under 5 s,
no server, no password leaks.
**Current focus:** Phase 1 — Stabilize Video Pipeline
## Current Position
Phase: 1 (Stabilize Video Pipeline) — EXECUTING
Plan: 7 of 7
Status: Ready to execute
Last activity: 2026-05-15
REQUIREMENTS.md, ROADMAP.md, STATE.md written)
Progress: [█████████░] 86%
## Performance Metrics
**Velocity:**
- Total plans completed: 0
- Average duration: —
- Total execution time: —
**By Phase:**
| Phase | Plans | Total | Avg/Plan |
|-------|-------|-------|----------|
| 1. Stabilize video pipeline | 0 | — | — |
| 2. Stabilize DOM + event capture privacy | 0 | — | — |
| 3. Stabilize export pipeline | 0 | — | — |
| 4. SPEC §10 smoke verification | 0 | — | — |
| 5. Harden + clean up | 0 | — | — |
**Recent Trend:**
- Last 5 plans: —
- Trend: —
*Updated after each plan completion*
| Phase 01 P01 | 4min | 6 tasks | 6 files |
| Phase 01 P02 | 4min | 5 tasks | 8 files |
| Phase 1 P03 | 8min | 3 tasks | 5 files |
| Phase 01 P04 | 4min | 3 tasks | 1 files |
| Phase 01 P05 | 8min | 2 tasks | 1 files |
| Phase 1 P06 | 3min | 2 tasks | 2 files |
## Accumulated Context
### Decisions
Decisions are logged in PROJECT.md Key Decisions table (DEC-001 through
DEC-012, all SPEC-Accepted and locked for Phase 1). Recent decisions affecting
current work:
- Phase 1 framing: roadmap treats the existing codebase as a partially-broken
first attempt to be remediated against the SPEC, not as greenfield. The
7 P0 defects from the audit are split across phases 13 along commit
boundaries; phase 4 is end-to-end SPEC §10 smoke verification.
- All 12 SPEC decisions (`DEC-001`..`DEC-012`) are LOCKED for Phase 1.
Changing any of them requires a formal ADR; none are formally LOCKED in the
ingest classification, so a future ADR can revise.
- [Phase ?]: Doc cascade: amendments append (do not replace) original DEC/CON blocks to preserve SPEC provenance — Established convention for future SPEC-amending phases; downstream readers see both old + new with citation
- [Phase ?]: Manifest: drop alarms permission entirely rather than retain for re-use — Plan 05 deletes the alarms code path; declaring unused permissions expands attack surface (T-1-02)
- [Phase ?]: Pinned vitest at ^4 (4.1.6 latest stable; 5.x still beta on 2026-05-15)
- [Phase ?]: Phase 1 Wave-0 test infra: 4 RED tests committed against not-yet-existent src/offscreen/recorder.ts — pins contracts for Plans 03+04
- [Phase ?]: Reverted premature REQ-video-ring-buffer Complete marking left by Plan 01-01; satisfied by Plans 03+04+07, not by Wave-0 RED tests
- [Phase 01-03]: Bundled OffscreenLogger into Task 2 commit (Rule 3 blocking dependency — recorder.ts cannot typecheck without the import)
- [Phase 01-03]: Defensive bootstrap guard (typeof chrome check) lets pure ring-buffer test import recorder module without chrome stub
- [Phase 01-03]: Removed SW-side VIDEO_CHUNK/VIDEO_CHUNK_SAVED branches + IndexedDB helpers inline (tsc-clean requires; Plan 05 owns remaining SW shrink)
- [Phase 01-04]: Kept Plan 03's defensive bootstrap guard (typeof chrome / per-API existence checks) instead of Plan 04's verbatim unguarded block — Plan 04's verbatim block regressed ring-buffer and codec-check tests (they don't stub full chrome surface); restored guard preserves Plan 02 RED contract while satisfying Plan 04's new GREEN contract. Rule 1 deviation.
- [Phase 01-04]: T-1-04 SW-side sender check documented redundantly (4 places in recorder.ts) for Plan 05 executor visibility — Offscreen is trusting party; SW is validating party. Documenting in module header, port-name constant, threat-mitigation comment near bootstrap, and inline at connectPort makes the contract impossible to miss when grepping for T-1-04 during Plan 05.
- [Phase 01-04]: REFACTOR pass NOT skipped: stale 'Plan 04 wires this' comments replaced with actual D-17/Pattern 5 citations — Forward-pointing TODO-style comments became misleading after the work landed; minimal correctness-preserving comment update with all 9 tests still GREEN.
- [Phase ?]: [Phase 01-05]: Deleted broken checkPermissions / requestPermissions flow (Rule 1)
- [Phase ?]: [Phase 01-05]: REQUEST_PERMISSIONS collapsed — under getDisplayMedia (D-01) no runtime perm check is meaningful; the broken 'tabCapture' permission check was sending recording-start into the never-granted branch
- [Phase ?]: [Phase 01-05]: Added chrome.offscreen.hasDocument() in initialize() — Rule 2 robustness, audit P1 #8 mitigation across SW respawns
- [Phase ?]: [Phase 01-05]: SW is now a pure coordinator — onConnect host bound to 'video-keepalive' port with T-1-04 sender check; getVideoBufferFromOffscreen replaces synchronous SW-local buffer fetch; OFFSCREEN_READY handshake closes the audit P1 #12 race
- [Phase ?]: [Phase 01-05]: indexedDB.deleteDatabase('VideoRecorderDB') in onInstalled — T-1-NEW-05-02 / RESEARCH.md Runtime State Inventory cleanup of orphaned IDB from pre-Phase-01 builds
- [Phase ?]: [Phase 01-06]: Collapsed vite.config.ts from 226 -> 21 lines (RESEARCH.md Example B verbatim); deleted 174-line inline copy-offscreen plugin (audit P0 #1 root cause) and the orphan offscreen/ top-level directory (D-08)
- [Phase ?]: [Phase 01-06]: crxjs Outcome A confirmed — dist/src/offscreen/index.html (preserves src/ prefix from rollupOptions.input key). SW URL adjusted to chrome.runtime.getURL('src/offscreen/index.html'); RESEARCH.md Pitfall 5 binding empirically verified
- [Phase 01-07-debug-d12]: D-12 port-blob serialization fixed via base64 wire-format encode/decode (debug session d12-blob-port-transfer-fails resolved 2026-05-15). chrome.runtime.Port JSON-serializes payloads across extension contexts so Blob payloads were silently corrupted (JSON.stringify(blob) === "{}" → SW saw [{}, {}, ...] → new Blob([...]) coerced each to "[object Object]" → 75-byte text instead of WebM). Added src/shared/binary.ts (blobToBase64 / base64ToBlob), TransferredVideoChunk wire-format type, offscreen encode side, SW decode side. All 15 tests green incl. 6-test port-serialization spec. Re-run smoke.sh + ffprobe still required for end-to-end verification.
- [Phase 01-07-debug-a3]: D-13 restart-segments activated (debug session webm-playback-freeze resolved 2026-05-15). Plan 07 smoke retest after D-12 landed revealed the next-layer A3 failure: the ffprobe-valid WebM froze ~1 s into playback in Chrome because the single-continuous-recorder + 30 s age-trim lifecycle (D-09..D-11) evicted middle chunks containing VP9 keyframe references for retained tail chunks (orphan P-frames). Activated the pre-staged D-13 skeleton in src/offscreen/recorder.ts: stop+restart MediaRecorder every SEGMENT_DURATION_MS=10_000 ms on the same MediaStream, keep last MAX_SEGMENTS=3 self-contained WebM segments (3×10s=30s window preserved). Each segment fresh-encoded → own EBML header + seed keyframe → independently decodable. Side-effect: .stop() per segment fixes the "File ended prematurely" Matroska finalization gap. Type renames propagated: TransferredVideoChunk → TransferredVideoSegment, VideoChunk → VideoSegment, PortMessage.chunks → PortMessage.segments, VideoBufferResponse.chunks → VideoBufferResponse.segments; the header-pin flag from D-09..D-11 is dropped entirely. D-09..D-11 retired in favor of D-13. 28/30 tests pass; the 2 remaining reds are the empirical ffmpeg dry-runs against the still-stale committed fixture (operator regen required). REQ-video-ring-buffer NOT marked complete — Plan 07 still owns that, gated on the operator running ./smoke.sh then verifying Chrome playback + ffmpeg-clean stderr.
### Pending Todos
None yet.
### Blockers/Concerns
- (informational) `chrome.tabCapture` requires a user gesture on first
activation — Phase 3 (P0-4) restores this by moving the call into the popup
click handler; until Phase 3 lands, recording cannot start cleanly even if
Phase 1's pipeline is correct. Phases 13 should not be re-ordered.
## Deferred Items
Items acknowledged and carried forward from previous milestone close:
| Category | Item | Status | Deferred At |
|----------|------|--------|-------------|
| *(none)* | | | |
## Session Continuity
Last session: 2026-05-15T21:18:00.000Z
Stopped at: D-13 restart-segments activated (debug session webm-playback-freeze resolved). 6 commits on gsd/phase-01-stabilize-video-pipeline (5530292, 6a1a034, 670daa3, f81438d, 87909d9 + the docs commit landing the resolution). 28/30 vitest pass; the 2 reds are fixture-empirical and stay RED until operator regens tests/fixtures/last_30sec.webm via ./smoke.sh. tsc clean; npm run build succeeds. REQ-video-ring-buffer NOT marked complete — Plan 07 §10 #7 still owns that, gated on operator re-running ./smoke.sh then verifying (i) Chrome playback end-to-end, (ii) ffmpeg dry-run produces empty stderr, (iii) the 2 webm-playback.test.ts REDs flip GREEN. After those three, Phase 1 can close.
Resume file: .planning/debug/resolved/webm-playback-freeze.md