docs(sprint): update plan.md with documentation refactoring milestone

- Add documentation refactoring as completed major milestone
- Update progress to show 20/30 tasks complete (67%)
- Add all 4 commits to deliverables section
- Update last updated timestamp

Sprint: sprint-11-05-2025

documentation/delivery/sprint-11-05-2025/plan.md

@@ -3,7 +3,7 @@
 **Sprint:** sprint-11-05-2025
 **Duration:** 14 days (Nov 5 - Nov 19, 2025)
 **Target Completion:** Day 6 (Nov 15, 2025) with 4-day buffer
-**Last Updated:** November 5, 2025 - Day 1 Complete
+**Last Updated:** November 5, 2025 - Documentation Refactoring Complete
 
 ---
 
@@ -11,6 +11,7 @@
 
 ```
 Day 1: Foundation Build ✅ COMPLETE
+Documentation Refactoring 📚 ✅ COMPLETE (Major Milestone)
 Day 2: Marketing Agents ⏭️ READY TO START
 Day 3: C-Level Agents ⏸️ Pending
 Day 4: Product Agent + Template ⏸️ Pending
@@ -18,8 +19,12 @@ Day 5: Documentation ⏸️ Pending
 Day 6: Testing & Validation ⏸️ Pending
 
 Issues Closed: 2/8 (25%)
-Deliverables: Directory structure + 5 standards
-Commit: e8af39a
+Tasks Complete: 20/30 (67%) 🎉
+Deliverables:
+- Directory structure + 5 standards
+- Modular CLAUDE.md structure (10 files)
+- Auto-documentation system (PROGRESS.md)
+Commits: e8af39a, 0923285, 706da02, 8501de3
 ```
 
 ---