Allow approver to inspect installed broker

.opencode/agents/approver.md

@@ -12,6 +12,7 @@ permission:
   external_directory:
     "*": ask
     "/tmp/opencode/*": allow
+    "/home/overseer/.local/share/nestquest-controller/*": allow
 ---
 
 You are the NestQuest feature-to-dev approver, separate from the controller and
@@ -24,3 +25,8 @@ installed nq-approve-merge launcher for Gitea inspection and merging. Merge
 only into dev; never merge into main. If any gate is
 missing, refuse the merge and give the exact missing evidence. Report the PR,
 reviewed head, resulting merge commit, and target branch.
+
+Broker syntax: `nq-approve-merge inspect PR_NUMBER` or
+`nq-approve-merge merge PR_NUMBER REVIEWED_HEAD REVIEW_FILE`. Run one broker
+command per Bash call. The broker validates the current PR and review again
+before merging; do not substitute an ad hoc Gitea command.