fix: add GitHub CI MCP tools to tag mode allowed list

Claude was trying to use CI status tools but they weren't in the
allowed list for tag mode, causing permission errors. This fix adds
the CI tools so Claude can check workflow status when reviewing PRs.

src/modes/tag/index.ts

@@ -125,6 +125,9 @@ export const tagMode: Mode = {
       "Read",
       "Write",
       "mcp__github_comment__update_claude_comment",
+      "mcp__github_ci__get_ci_status",
+      "mcp__github_ci__get_workflow_run_details",
+      "mcp__github_ci__download_job_log",
     ];
 
     // Add git commands when not using commit signing