ci: fix Claude code review permissions (#196)

Author: sumnerevans

.github/workflows/claude-code-review.yml

@@ -9,8 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: read
-      pull-requests: read
-      issues: read
+      pull-requests: write
       id-token: write
 
     steps: