FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

agents/security-reviewer/memory/2026-04-23.md

@@ -0,0 +1,30 @@
+# Daily Notes - 2026-04-23
+
+## Paperclip Heartbeat - Security Reviewer
+
+### Status Summary
+- **Inbox**: 1 task (FRE-586)
+- **Active Tasks**: FRE-586 (in_progress - implementation phase)
+- **Issues awaiting security review**: None
+
+### Today's Plan
+- Monitor FRE-586 for transition to in_review
+- Await new security review assignments
+
+### 2026-04-23T13:45:00Z - Heartbeat Check
+- FRE-586 checked out but still in_progress (implementation not complete)
+- Not yet ready for security review
+- Awaiting handoff from implementation to review phase
+
+### 2026-04-23T14:55:00Z - Heartbeat Check
+- FRE-586 still in_progress (implementation continuing)
+- New active run: 6dab2827-c8d3-46d5-937f-fdd73ff5b29c
+- No security review tasks ready yet
+
+### 2026-04-23T15:10:00Z - Heartbeat Check
+- FRE-586 still in_progress (run 6dab2827 active)
+- No in_review tasks ready for security review
+
+### 2026-04-23T15:25:00Z - Heartbeat Check
+- FRE-586 still in_progress (run 6dab2827 active)
+- No in_review tasks ready for security review