fix: add missing workflow permissions for claude-code-action OIDC

- review-writing.yml: add id-token: write for OIDC authentication
- claude-code-review.yml: pull-requests read → write for review comments

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: lipingtababa

.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
 

.github/workflows/review-writing.yml

@@ -10,6 +10,7 @@ on:
 permissions:
   contents: read
   pull-requests: write
+  id-token: write
 
 concurrency:
   group: review-writing-${{ github.event.pull_request.number }}