diff --git a/docs/ecosystem/delegation/codex/PHASE1_CLOSEOUT_CHECKLIST.md b/docs/ecosystem/delegation/codex/PHASE1_CLOSEOUT_CHECKLIST.md
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+# Phase 1 Closeout Checklist
+
+> **Role:** Codex
+> **Purpose:** Final acceptance gate for the Phase 1 golden flow after Windsurf and Cursor return their results.
+
+---
+
+## 1. Inputs Required
+
+- Windsurf result for NoteLett verification
+- Cursor result for MindLyst verification
+- latest tracker state in [`ECOSYSTEM_IMPLEMENTATION_TRACKER.md`](/Users/saravana/BytelystAI/learning_ai/learning_ai_common_plat/docs/ecosystem/ECOSYSTEM_IMPLEMENTATION_TRACKER.md)
+- latest execution-plan state in [`PHASE1_TRANSCRIPT_NOTE_MEMORY_EXECUTION_PLAN.md`](/Users/saravana/BytelystAI/learning_ai/learning_ai_common_plat/docs/ecosystem/PHASE1_TRANSCRIPT_NOTE_MEMORY_EXECUTION_PLAN.md)
+
+---
+
+## 2. Contract Review
+
+- [ ] transcript artifact still matches [`packages/events/src/ecosystem.ts`](/Users/saravana/BytelystAI/learning_ai/learning_ai_common_plat/packages/events/src/ecosystem.ts)
+- [ ] note artifact still matches [`packages/events/src/ecosystem.ts`](/Users/saravana/BytelystAI/learning_ai/learning_ai_common_plat/packages/events/src/ecosystem.ts)
+- [ ] memory artifact still matches [`packages/events/src/ecosystem.ts`](/Users/saravana/BytelystAI/learning_ai/learning_ai_common_plat/packages/events/src/ecosystem.ts)
+- [ ] `capture.transcript.created` remains canonical
+- [ ] `artifact.created` remains canonical
+- [ ] `artifact.linked` remains canonical
+- [ ] `memory.entry.created` remains canonical
+
+---
+
+## 3. Lineage Review
+
+- [ ] transcript event index exists
+- [ ] NoteLett created event keeps upstream capture-event causation
+- [ ] NoteLett linked event chains from the note created event
+- [ ] note linked-event index exists
+- [ ] MindLyst memory event keeps upstream note-linked causation
+- [ ] memory event index exists
+
+---
+
+## 4. Verification Review
+
+- [ ] LysnrAI verification evidence recorded
+- [ ] NoteLett verification evidence recorded
+- [ ] MindLyst verification evidence recorded
+- [ ] any remaining blocker is explicit and environmental, not ambiguous
+
+---
+
+## 5. Tracker And Docs
+
+- [ ] tracker commit list is current
+- [ ] execution plan reflects the latest implementation state
+- [ ] any residual risks are documented
+- [ ] closeout decision is written clearly: `complete`, `complete-with-known-env-blockers`, or `not-complete`
+
+---
+
+## 6. Final Output To Saravana
+
+- [ ] summarize what is done
+- [ ] summarize what remains
+- [ ] state whether Phase 1 can be treated as closed
+- [ ] state whether Phase 2 parallelization can begin
+
+---
+
+## 7. Commits
+
+- `pending`
diff --git a/docs/ecosystem/delegation/codex/PHASE1_INTEGRATION_REVIEW.md b/docs/ecosystem/delegation/codex/PHASE1_INTEGRATION_REVIEW.md
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--- a/docs/ecosystem/delegation/codex/PHASE1_INTEGRATION_REVIEW.md
+++ b/docs/ecosystem/delegation/codex/PHASE1_INTEGRATION_REVIEW.md
@@ -35,6 +35,10 @@
 - verification evidence is real and recorded
 - tracker reflects actual completion state
 
+Use this closeout gate when the delegated results arrive:
+
+- [`PHASE1_CLOSEOUT_CHECKLIST.md`](/Users/saravana/BytelystAI/learning_ai/learning_ai_common_plat/docs/ecosystem/delegation/codex/PHASE1_CLOSEOUT_CHECKLIST.md)
+
 ## Expected Output
 
 - approve or reject delegated work