ci: fix opencode github

.github/workflows/opencode.yml

@@ -11,6 +11,7 @@ jobs:
       contains(github.event.comment.body, '/opencode')
     runs-on: ubuntu-latest
     permissions:
+      contents: read
       id-token: write
     steps:
       - name: Checkout repository
@@ -23,4 +24,4 @@ jobs:
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
         with:
-          model: anthropic/claude-sonnet-4-20250514
+          model: anthropic/claude-sonnet-4-20250514