chore(plans): link gitsheets-scripts-2.9 to PR #252

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011Q2tgjZEUrtvVk6k8SpdXJ

Author: themightychris

plans/gitsheets-scripts-2.9.md

@@ -6,7 +6,7 @@ specs:
 upstream-specs:
   - gitsheets:specs/api/repository.md
   - gitsheets:specs/api/transaction.md
-pr:
+pr: 252
 ---
 
 # Plan: retire the scripts' git workarounds on gitsheets 2.9