test(01): UAT BLOCKER #2 — D-13 multi-EBML-concat plays only ~9 s; both committed fixture and UAT output exhibit same broken playback. Phase 1 architecture finding.

.planning/phases/01-stabilize-video-pipeline/01-UAT.md

@@ -1,5 +1,5 @@
 ---
-status: partial
+status: testing
 phase: 01-stabilize-video-pipeline
 source:
   - 01-01-SUMMARY.md
@@ -10,16 +10,34 @@ source:
   - 01-06-SUMMARY.md
   - 01-07-SUMMARY.md
 verifier_residue: 01-VERIFICATION.md (status: human_needed, OPR-1/2/3)
+debug_session_landed: .planning/debug/resolved/empty-archive-port-race.md (Option C — 8 commits 674c415..f0871c0)
 started: 2026-05-16T11:14:00Z
-updated: 2026-05-16T11:58:00Z
-paused_for: /gsd-debug investigation of Test 3 port-reconnect uncaught-error finding
+updated: 2026-05-16T16:50:00Z
+resumed_for: empirical re-verification of Option C fix (silent empty-video archive + port-reconnect race) before closing Phase 1
 ---
 
 ## Current Test
 
-[testing paused — 1 issue + 1 blocked outstanding; user routed to /gsd-debug
- immediately after Test 3 surfaced 3× Uncaught Error post-reconnect. Resume
- Test 3 save+play AND Test 4 SW Force-Stop after debug session lands a fix.]
+number: 3
+name: "OPR-2: Continuous Recording Across Tab Switches (re-attempt post-Option-C)"
+expected: |
+  Now that Option C landed (port lifecycle refactor + request-id'd BUFFER
+  routing + EmptyVideoBufferError surfaced to popup), Test 3 should now
+  produce a zip with a valid `video/last_30sec.webm` AND show NO
+  Uncaught Errors after the 290s mark (that timer is retired in favor
+  of the port-health-probe). Re-run smoke.sh with the freshly built
+  dist/ and confirm:
+  (a) Recording runs uninterrupted across tab switches (open 2-3 new
+      tabs, switch between them for ~30 s).
+  (b) NO `Uncaught Error: Attempting to use a disconnected port object`
+      appears in offscreen console — even past the 290 s mark.
+  (c) The save flow completes in reasonable time (< 5 s, NOT 600 s as
+      before).
+  (d) The produced zip contains `video/last_30sec.webm` of expected
+      size (~1.5 MB for 30 s VP9 1024×768-ish).
+  (e) The WebM plays continuously in Chrome (no freeze, no missing
+      seconds across tab-switch moments).
+awaiting: user response (smoke.sh output + zip contents)
 
 ## Tests
 
@@ -192,10 +210,11 @@ reason: |
 
 total: 4
 passed: 2
-issues: 1
+issues: 2 (Test 3 confirmed BLOCKER × 2: empty-archive fixed by Option C → new finding: D-13 multi-EBML-concat plays only ~9 s in mpv AND Chrome)
 pending: 0
 skipped: 0
-blocked: 1
+blocked: 2 (Test 3 retest after D-13 architectural fix; Test 4 SW Force-Stop deferred behind the same fix)
+paused_for: /gsd-debug d13-multi-ebml-concat-unplayable — Phase 1 architectural finding
 
 ## Gaps