diff --git a/gtd.org b/gtd.org
index ad4fe02..6fa55fd 100644
--- a/gtd.org
+++ b/gtd.org
@@ -70,8 +70,16 @@ Slim down the org-agent microkernel by moving non-essential cognitive functions
 *** TODO Implement Cognitive Loop "Rut" Recovery (Dynamic Escalation in org-skill-safety-harness)
 *** TODO Implement Asynchronous Event Bus for Telemetry (core.lisp)
 *** TODO Implement Memory Eviction and Lazy Loading (LRU Cache in object-store.lisp)
-*** TODO Implement Native Lisp Merkle-Tree Versioning (Short-term undo buffer in object-store.lisp)
-*** TODO Performance: Implement Copy-on-Write (CoW) or Persistent Data Structures for Object Store
+*** DONE Implement Native Lisp Merkle-Tree Versioning (Short-term undo buffer in object-store.lisp)
+    CLOSED: [2026-04-09 Thu 14:45]
+    :LOGBOOK:
+    - State "DONE"       from "TODO"       [2026-04-09 Thu 14:45]
+    :END:
+*** DONE Performance: Implement Copy-on-Write (CoW) or Persistent Data Structures for Object Store
+    CLOSED: [2026-04-09 Thu 14:46]
+    :LOGBOOK:
+    - State "DONE"       from "TODO"       [2026-04-09 Thu 14:46]
+    :END:
 *** TODO Feature: Implement Latent Reflection (Proactive Gardening) using heartbeat idle cycles
 *** TODO Simplification: Refactor Cognitive Loop into a Unified Reactive Signal Pipeline
 *** TODO Resilience: Implement Micro-Rollbacks for the Immune System