ci: grant pull-requests write permission to claude-code-review (unlock-protocol#16328)

ci: grant pull-requests write permission to claude-code-review workflow

Required to post review comments on PRs.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: julien51

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

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: read
-      pull-requests: read
+      pull-requests: write
       issues: read
       id-token: write