diff --git a/CHANGELOG.md b/CHANGELOG.md
index a73e700..ce64edb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -73,6 +73,13 @@ get_node_essentials({
   - Ranking by template popularity
   - Auto-creates `template_node_configs` table if missing
 
+- **Comprehensive Test Suite**
+  - 85+ tests covering all aspects of template configuration system
+  - Integration tests for database operations and end-to-end workflows
+  - Unit tests for tool parameters, extraction logic, and ranking algorithm
+  - Fixtures for consistent test data across test suites
+  - Test documentation in P0-R3-TEST-PLAN.md
+
 ### Removed
 
 - Tool: `get_node_for_task` (see Breaking Changes above)