chore(01-09): resume from pause — sync STATE.md, remove HANDOFF.json

HANDOFF.json artifact consumed per /gsd-resume-work workflow
(one-shot resumption pointer). STATE.md synced forward to reflect
true mid-Plan-01-09 state — status flipped planning→executing,
progress 90→92, Current Position now shows Phase 1 REOPENED with
Plan 01-09 Bug B pending and Plan 01-10 Wave 3 pending.

Session continuity records:
- Pause checkpoint commit:  ed82fd6
- Bug A icons commit:       a881bf0
- Intel docs unlock commit: f768498
- Next: /gsd-debug session for Bug B state-machine routing

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

.planning/HANDOFF.json

@@ -1,80 +0,0 @@
-{
-  "version": "1.0",
-  "timestamp": "2026-05-17T14:04:15Z",
-  "phase": "01",
-  "phase_name": "stabilize-video-pipeline",
-  "phase_dir": ".planning/phases/01-stabilize-video-pipeline",
-  "wave": 2,
-  "plan": "01-09",
-  "status": "paused",
-  "completed_this_session": [
-    {"id": "01-08", "name": "WebM remux via ts-ebml + webm-muxer", "status": "done", "commit_range": "5035314..e40949d", "notes": "Includes resolve.alias ebml CJS-main + vite-plugin-node-polyfills Buffer fix from debug session 01-08-sw-incompatibility (resolved). Tier-1 SW-bundle-import gate added at tests/background/sw-bundle-import.test.ts (2-layer)."},
-    {"id": "01-09-task1to4", "name": "Plan 01-09 Tasks 1-4: displaySurface monitor + cursor:always + toolbar onClicked + badge state machine + onStartup notification + popup SAVE-only", "status": "done", "commit_range": "333e0dc..c711d7e", "notes": "Task 5 operator empirical revealed 2 bugs — see remaining_work."},
-    {"id": "design-intel", "name": "Design system + assets spec for designer team handoff", "status": "done", "commit": "949aa03", "files": [".planning/intel/design-system.md", ".planning/intel/assets-spec.md"]}
-  ],
-  "remaining_tasks": [
-    {
-      "id": "01-09-bug-fix",
-      "name": "Fix Plan 01-09 Bug B: route user-stopped-sharing → setIdleMode (not setErrorMode)",
-      "status": "not_started",
-      "details": "Per debug session 01-09-recovery-flow (NOT YET WRITTEN to disk — exists only in session context). Operator UAT surfaced: after clicking Chrome's Stop Sharing, badge stuck on ERROR (yellow), popup is SAVE-only, no recovery notification (Bug A icon failure), operator locked out of restart. Fix: switch RECORDING_ERROR handler in src/background/index.ts:725-744 on message.error code — 'user-stopped-sharing' → setIdleMode; other codes → setErrorMode (preserved). The onUserStoppedSharing handler in src/offscreen/recorder.ts:451-480 already calls resetBuffer() so there's nothing to save → IDLE is correct. Needs RED test before GREEN fix.",
-      "resume_with": "/gsd-debug continue 01-09-recovery-flow (if continuation works) OR /gsd-debug 'Plan 01-09 setErrorMode locks operator out — route user-stopped-sharing to setIdleMode' (fresh)"
-    },
-    {
-      "id": "01-09-icon-placeholders-commit",
-      "name": "Commit auto-generated icon placeholders (Bug A unblock)",
-      "status": "uncommitted_in_working_tree",
-      "details": "Generated via imagemagick (dark-square + green-dot) at icons/icon{16,48,128}.png. Sizes 574/1153/2615 bytes — all above the Chrome notification API minimums. Working tree has them uncommitted. They unblock operator UAT; designer team's branded assets later swap in cleanly. Commit message should reference .planning/intel/assets-spec.md Path A.",
-      "resume_with": "git add icons/icon{16,48,128}.png && commit per Path A in assets-spec.md"
-    },
-    {
-      "id": "01-09-uat-re-run",
-      "name": "Re-run smoke after Bug B fix + placeholder commit to verify full flow",
-      "status": "not_started",
-      "details": "Pre-checkpoint gates should be run FIRST (per saved memory feedback-pre-checkpoint-bundle-gates.md). Then operator: Chrome smoke, click Stop Sharing, verify badge → OFF + toolbar.onClicked re-fires for restart + recovery notification visible with placeholder icon."
-    },
-    {
-      "id": "01-10",
-      "name": "Plan 01-10 onboarding welcome tab",
-      "status": "pending",
-      "details": "Wave 3. depends_on: [01-09]. Unblocked once 01-09 closes. Plan exists at .planning/phases/01-stabilize-video-pipeline/01-10-PLAN.md.",
-      "resume_with": "/gsd-execute-phase 1 (continues from where Wave 2 closes)"
-    },
-    {
-      "id": "verify",
-      "name": "/gsd-verify-work 1 goal-backward verification",
-      "status": "not_started",
-      "resume_with": "/gsd-verify-work 1"
-    },
-    {
-      "id": "phase-close",
-      "name": "Flip Phase 1 closure markers back to Complete after UAT genuinely passes",
-      "status": "not_started",
-      "details": "REQUIREMENTS.md REQ-video-ring-buffer [ ] → [x]; ROADMAP Phase 1 [ ] → [x]; STATE.md status phase_reopened → phase_complete; progress 90% → 100%. Currently STATE.md is partially mid-pause state per the file modification I see."
-    }
-  ],
-  "uncommitted_files": [
-    {"path": ".planning/STATE.md", "reason": "Auto-modified by session continuity logic; needs cleanup as part of phase closure or pause commit"},
-    {"path": "icons/icon128.png", "reason": "Plan 01-09 Bug A placeholder unblock (auto-generated 2615 bytes); commit as part of 01-09 closure"},
-    {"path": "icons/icon16.png", "reason": "Plan 01-09 Bug A placeholder unblock (574 bytes)"},
-    {"path": "icons/icon48.png", "reason": "Plan 01-09 Bug A placeholder unblock (1153 bytes)"},
-    {"path": "tests/fixtures/last_30sec.webm", "reason": "Operator's recent smoke run staged this; LIKELY needs revert (the committed one in e40949d is the Plan 01-08 closeout fixture). Verify: git diff tests/fixtures/last_30sec.webm to see if it differs from HEAD; if yes, restore via git checkout."}
-  ],
-  "blockers": [],
-  "human_actions_pending": [
-    "Designer team to produce branded icons per .planning/intel/assets-spec.md (Priority 0). Placeholder icons unblock Plan 01-09 closeout in the meantime."
-  ],
-  "decisions_this_session": [
-    {"decision": "Plan 01-08 WebM remux landed via ts-ebml@3.0.2 + webm-muxer@5.1.4 with two-stage fix (resolve.alias + Buffer polyfill via vite-plugin-node-polyfills)", "rationale": "ts-ebml has known browser incompatibility (issue #37, 5 years open). Vite/Rollup CJS interop initially tree-shook ebml; resolve.alias to CJS main entry fixed module-init. Buffer polyfill via vite-plugin-node-polyfills fixed runtime EBMLDecoder.constructor that calls Buffer.alloc(0)."},
-    {"decision": "smoke.sh diagnostic timer overlay (T+/wall) added", "rationale": "Operator's 'video isn't latest' observation needed precise measurement. Timer in every recorded frame lets operator compute (save-click value − last-frame value) = stale gap. Confirmed D-13 trade-off (~5-10s gap) empirically."},
-    {"decision": "Two test fixtures: last_30sec.webm (post-remux output) + raw-3ebml-concat.webm (pre-remux input)", "rationale": "Plan 01-08 originally used last_30sec.webm as both remux INPUT and OUTPUT validation target. Once remux works, the fixture is the OUTPUT only. Unit tests need the INPUT format. Split fixtures resolves the conflict."},
-    {"decision": "Auto-generated placeholder icons via imagemagick (Path A from assets-spec.md)", "rationale": "Unblock Plan 01-09 UAT now; designer team's branded icons swap in cleanly later. Avoids blocking the operator empirical loop on design work that's already delegated externally."},
-    {"decision": "Design system + assets spec committed to .planning/intel/ as designer-team handoff docs", "rationale": "User stated will delegate all design execution to designer team. Specs capture hard technical floor (sizes/formats/contexts) + initial aesthetic direction the designer can override."}
-  ],
-  "session_anti_patterns_recurring": [
-    {"name": "Subagent context anxiety surfacing", "severity": "blocking", "details": "Two subagents this session (gsd-executor at 66% and gsd-debug-session-manager at 72%) surfaced 'should I split / pause / accept partial scope' as user-facing decisions. The memory feedback-no-unilateral-scope-reduction.md hard sub-rule on context anxiety covers this BUT the rule was written for the orchestrator; needs strengthening to also bind subagents OR the orchestrator's spawn-prompt template must explicitly forbid the pattern. Workaround used: spawned fresh executor with explicit anti-context-anxiety directive baked into the prompt. Worked for executor; debug session manager did it again. Worth updating the saved memory to explicitly cover subagent-side surfacing + adjusting future spawn prompts."},
-    {"name": "Pre-checkpoint bundle gates pattern validated", "severity": "advisory", "details": "Plan 01-08 closeout taught us the gates BEFORE operator checkpoint pattern (memory feedback-pre-checkpoint-bundle-gates.md). Plan 01-09 also used it successfully — Tier-1 SW-bundle-import gate stayed GREEN throughout Plan 01-09 execution; gates 1-4 ran cleanly before operator UAT. The pattern is working."}
-  ],
-  "context_notes": "Plan 01-09 Bug A (icon files) and Bug B (setErrorMode locks operator out) discovered during operator empirical Task 5. Bug A unblocked via placeholders in working tree (uncommitted). Bug B requires the route-on-error-code fix in src/background/index.ts:725-744. Both belong to Plan 01-09's closeout — should land before Wave 3 (Plan 01-10) starts. The debug session 01-09-recovery-flow was opened but its session manager hit context anxiety at 72% and stopped before writing the debug file or RED tests. Resume by spawning a FRESH /gsd-debug session with the orchestrator-context notes (including the explicit Bug B fix plan: route on message.error, IDLE for user-stopped-sharing, ERROR for other codes; preserve defensive ordering). All 3 hypotheses (icon corruption, popup-lock, design mismatch) are already verified empirically.",
-  "next_action": "After /clear: run /gsd-resume-work to load handoff. Recommended first step: commit the icon placeholders (icons/icon{16,48,128}.png — currently uncommitted), then spawn /gsd-debug for 01-09-recovery-flow Bug B fix per the orchestrator-context details above. Then re-run smoke for operator empirical verification. Then Wave 3 (Plan 01-10)."
-}