Document merge and cleanup of feature branches in changelog

Added changelog entries for:
- Merge of v20260203-01 through v20260205-13 into main
- Cleanup of 66 historical feature branches from repository

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

docs/changelog-claude.md

@@ -2,6 +2,24 @@
 
 This file documents all changes made to this project via Claude Code.
 
+## [2026-02-06]
+
+### Changed
+- Merged all feature branches from v20260203-01 through v20260205-13 into main branch
+  - Consolidated 29 feature branches spanning three development cycles
+  - Used final state from v20260205-13-changelog-python-structure to preserve all functionality
+  - Successfully integrated Autotask PSA integration, changelog restructuring, and UI improvements
+  - All features from individual branches now available in main
+
+### Removed
+- Cleaned up 66 merged feature branches from repository (both local and remote):
+  - Removed all v20260113-* branches (8 branches)
+  - Removed all v20260115-* branches (17 branches)
+  - Removed all v20260116-* branches (12 branches)
+  - Removed all v20260119-* branches (18 branches)
+  - Removed all v20260120-* branches (11 branches)
+  - Repository now contains only main branch and current working branches (v20260206-*)
+
 ## [2026-02-05]
 
 ### Added