feat: authorized cleanup for reviewer scratch worktrees (Closes #534)

Discover branches/review-pr<N>[-submit] worktrees separately from author
cleanup, fail closed on dirty trees / open PRs / active reviewer leases,
and remove only assessed-safe scratch paths via reconcile.

gitea_mcp_server.py

@@ -4737,6 +4737,34 @@ def gitea_reconcile_merged_cleanups(
         )
 
     delete_capability_allowed = not _profile_operation_gate("gitea.branch.delete")
+
+    # #534: discover reviewer scratch trees and active leases for those PRs.
+    scratch_candidates = merged_cleanup_reconcile.discover_reviewer_scratch_worktrees(
+        PROJECT_ROOT
+    )
+    active_reviewer_leases: dict[int, bool] = {}
+    pr_states: dict[int, dict] = {}
+    for scratch in scratch_candidates:
+        pr_num = int(scratch["pr_number"])
+        if pr_num in active_reviewer_leases:
+            continue
+        try:
+            comments = api_get_all(f"{base}/issues/{pr_num}/comments", auth)
+        except Exception:
+            comments = []
+        lease = reviewer_pr_lease.find_active_reviewer_lease(
+            comments, pr_number=pr_num
+        )
+        active_reviewer_leases[pr_num] = bool(lease)
+        try:
+            pr_live = api_request("GET", f"{base}/pulls/{pr_num}", auth)
+        except Exception:
+            pr_live = {}
+        pr_states[pr_num] = {
+            "merged": bool((pr_live or {}).get("merged") or (pr_live or {}).get("merged_at")),
+            "closed": (pr_live or {}).get("state") == "closed",
+        }
+
     report = merged_cleanup_reconcile.build_reconciliation_report(
         project_root=PROJECT_ROOT,
         closed_prs=merged_closed,
@@ -4744,6 +4772,8 @@ def gitea_reconcile_merged_cleanups(
         remote_branch_exists=remote_branch_exists,
         head_on_master=head_on_master,
         delete_capability_allowed=delete_capability_allowed,
+        active_reviewer_leases=active_reviewer_leases,
+        pr_states=pr_states,
     )
 
     if dry_run:
@@ -4787,6 +4817,14 @@ def gitea_reconcile_merged_cleanups(
             )
             actions.append({"action": "remove_local_worktree", **result})
 
+    for scratch in report.get("reviewer_scratch_entries") or []:
+        if not scratch.get("safe_to_remove_worktree"):
+            continue
+        result = merged_cleanup_reconcile.remove_reviewer_scratch_worktree(
+            PROJECT_ROOT, scratch.get("worktree_path") or ""
+        )
+        actions.append({"action": "remove_reviewer_scratch_worktree", **result})
+
     report["dry_run"] = False
     report["executed"] = True
     report["actions"] = actions