feat(04-08): A33 SW state persistence harness assertion — methodology reframe (34/34 GREEN; ROADMAP SC #1 CLOSED)

Task 2 of Plan 04-08 (revive A33 under valid methodology + close ROADMAP SC #1):

- Append driveA33(page, browser, extensionId, downloadsDir) at tests/uat/lib/harness-page-driver.ts:2516-2697 per Plan 04-04 Pattern 4 verbatim
- 3 checks: A33.1 SAVE_ARCHIVE ack success after 5-min idle + SW kill; A33.2 video size > 0; A33.3 video size > 100 KB sanity floor
- Reuses stopServiceWorker helper (Plan 04-04 commit 3726eee) + findLatestZip (Plan 04-04 exported helper) + assertA2 prime (canonical "go to REC" entrypoint per REVISION iter-2 Option B) + inline chrome.runtime.sendMessage SAVE_ARCHIVE dispatch from harness-page realm
- 3-file lockstep wiring at tests/uat/harness.test.ts: (1) import block adds driveA33 after driveA32; (2) wrapped-driver block adds driveA33Wrapped const after driveA31Wrapped; (3) drivers-array push appends A33 entry with SKIP_LONG_UAT env-gate (default RUN for Phase 4 closure + alpha gate)

Spike re-run evidence (HEADLESS=1 npx tsx tests/uat/spike-a33-sw-persistence.ts; 309.5s wall-clock):
- SPIKE PROBE [POST-PRIME]: segments.length=0  (baseline; no rotations yet)
- SPIKE PROBE [PRE-KILL]:   segments.length=3  (5-min idle drove rotation cadence to MAX_SEGMENTS)
- SPIKE PROBE [POST-KILL]:  segments.length=3  (architecture preserved across SW kill — debug session-2 verdict confirmed)
- SPIKE RESULT [CANONICAL]: videoSize=1,797,178 bytes (1.8 MB; vs 8505 baseline; ~211x larger)
- SPIKE OUTCOME: PASSED (offscreen SURVIVED the 5-min idle + SW kill)

Sample segment sizes during 5-min idle: 536921, 539874, 577234, 611683, 596512, 541658, 680729, 617089, 597527, 585310 bytes (all ~500-680 KB; per 10s @ ~400 kbps VP9 per CON-video-codec).

UAT before/after:
- Skip-mode UAT (HEADLESS=1 SKIP_PROD_REBUILD=1 SKIP_LONG_UAT=1 npm run test:uat): 34/34 GREEN in ~95s (A33 placeholder PASSES under skip env)
- vitest baseline flipped 183 -> 184 GREEN (+1 from Tier-2 production-bundle filename-leak gate landed in Task 1)

ROADMAP SC #1 closure (.planning/ROADMAP.md):
- STATUS line flipped OPEN -> CLOSED with Plan 04-08 cite + 2026-05-22 date
- Plan list adds new 04-08-PLAN.md row + amends 04-04-PLAN.md row with REFUTED-architecture verdict cross-reference (debug session-2 commit 4ea1bbb)
- Phase tracker cell updated from `4/7 In Progress` to `5/8 In Progress`
- WARNING 4 grep gates verified PASS: `CLOSED via Plan 04-08`=1; `STATUS 2026-05-21: OPEN`=0; `STATUS 2026-05-22: CLOSED`=1

Pre-checkpoint bundle gates 6/6 PASS:
- new Function=0 + eval=0 + Buffer.=1 (pre-existing JSZip polyfill) + window./document.=0 in SW chunk
- Tier-1 FORBIDDEN_HOOK_STRINGS lockstep at 12 entries (unchanged)
- Tier-2 production-bundle filename-leak gate (NEW from Task 1): synthetic-display-source = 0 hits in dist/
- en/ru parity preserved
- npx tsc --noEmit: exit 0

Architecture integrity preserved per debug session-2 verdict:
- src/offscreen/recorder.ts:91 `let segments: Blob[] = []` is UNCHANGED (grep gate enforces)
- NO IndexedDB persistence work; NO chrome.storage migration; NO offscreen-document lifecycle changes
- IndexedDB persistence plan-fix recommendation from Plan 04-04 SUMMARY REJECTED (would not have closed SC #1 because segments are not the problem, frames were)

Persisting artifacts from Plan 04-04 repurposed under valid methodology:
- stopServiceWorker helper (commit 3726eee): reused verbatim by driveA33
- tests/uat/spike-a33-sw-persistence.ts (commit 3726eee + session-2 Step B/C): now PASSES as canonical regression-verification gate

Self-Check: PASSED. All claims verified per executor protocol §self_check.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v2.0.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 04-02-PLAN.md (setimmediate polyfill replaced via layered 4-mechanism mitigation; SW new Function polarity 1→0; UAT 33/33 GREEN preserved)
-last_updated: "2026-05-21T17:24:14.969Z"
+stopped_at: "Completed 04-08-PLAN.md (methodology reframe; A33 lands; ROADMAP SC #1 CLOSED via video-file MediaStream + SYNC install + LAZY first-frame; spike re-run 1.8MB vs 8505; UAT 34/34 + vitest 184/184 GREEN; architecture UNCHANGED per debug session-2)"
+last_updated: "2026-05-22T09:06:10.449Z"
 last_activity: 2026-05-21
 progress:
   total_phases: 4
   completed_phases: 3
-  total_plans: 30
-  completed_plans: 27
+  total_plans: 31
+  completed_plans: 28
   percent: 90
 ---
 
@@ -206,6 +206,7 @@ current work:
 - [Phase 04]: test
 - [Phase 04-04]: Wave 0 SPIKE FAILED — empirically refutes RESEARCH Q2 MEDIUM-confidence A3 (offscreen-document independent lifecycle). videoSize=8505 bytes after 5min idle + Puppeteer CDP worker.close() (sanity floor 100KB; typical 1-3MB). 8505 bytes are corrupt WebM per ffprobe (End of file + Duplicate element; no valid clusters); rrweb/session.json=[]; logs/events.json=[]; meta.urls=chrome-extension://* only. Conclusion: src/offscreen/recorder.ts:91 'let segments: Blob[] = []' RAM-only architecture does NOT survive 5-min SW idle. ROADMAP SC #1 remains OPEN; Task 2 (A33 verification-only) BLOCKED by gating condition; plan-fix ceremony required to add IndexedDB persistence per RESEARCH Q2 sub-question b Option C. Spike-first contract honored — STOP at Task 1; do NOT improvise inline; route to plan-fix ceremony per saved-memory feedback-gsd-ceremony-for-fixes.md.
 - [Phase 04-04]: stopServiceWorker(browser, extensionId) helper landed at tests/uat/lib/harness-page-driver.ts (verbatim Chrome devrel canonical pattern — Puppeteer >=22.1.0 worker.close()). Persisting artifact retained even though Task 2 BLOCKED — helper is non-empty positive scaffolding for the eventual IndexedDB-persistence plan-fix verification harness (A33-equivalent reuse). Pattern: spike-FAILED forensic-evidence — commit the spike script (tests/uat/spike-a33-sw-persistence.ts; 202 lines) AND the persisting helpers (not delete) so future plan-fix can re-run the exact reproducible test that revealed the failure.
+- [Phase ?]: [Phase 04-08]: Methodology reframe — video-file MediaStream replaces canvas.captureStream throttling per debug session-2 verdict; A33 lands; UAT 33->34; ROADMAP SC #1 CLOSED 2026-05-22 (videoSize=1.8MB vs 8505 baseline); architecture UNCHANGED.
 
 ### Pending Todos
 
@@ -228,8 +229,8 @@ Items acknowledged and carried forward from previous milestone close:
 
 ## Session Continuity
 
-Last session: 2026-05-21T17:11:40.684Z
-Stopped at: Completed 04-02-PLAN.md (setimmediate polyfill replaced via layered 4-mechanism mitigation; SW new Function polarity 1→0; UAT 33/33 GREEN preserved)
+Last session: 2026-05-22T09:05:45.235Z
+Stopped at: Completed 04-08-PLAN.md (methodology reframe; A33 lands; ROADMAP SC #1 CLOSED via video-file MediaStream + SYNC install + LAZY first-frame; spike re-run 1.8MB vs 8505; UAT 34/34 + vitest 184/184 GREEN; architecture UNCHANGED per debug session-2)
 Resume file: None
 
 Prior session: 2026-05-21T08:22:59.958Z — /gsd-pause-work saved Phase 4 execution-ready handoff (dbcf482); Phase 4 plans validated iter-2 PASSED + 3 cosmetic advisories fixed