config: add Claude permissions settings

Define allowed Bash operations for gh CLI commands used in PR review
automation workflows.

🤖 Generated with Claude Code (https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

.claude/settings.json

@@ -0,0 +1,18 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(gh api:*)",
+      "Bash(gh pr close:*)",
+      "Bash(gh pr comment:*)",
+      "Bash(gh pr diff:*)",
+      "Bash(gh pr edit:*)",
+      "Bash(gh pr list:*)",
+      "Bash(gh pr view:*)",
+      "Bash(gh run list:*)",
+      "Bash(gh run rerun:*)",
+      "Bash(gh run view:*)",
+      "Bash(gh search:*)"
+    ],
+    "deny": []
+  }
+}