fix: resolve conflicts for PR #392

Merge prgs/master into feat/issue-389-review-workflow-load-proof and
preserve workflow-load gates while adopting master test harness patterns
(_seed_ready_review_decision, reviewer leases, expected_head_sha).

tests/test_review_workflow_load.py

@@ -130,7 +130,9 @@ class TestReviewWorkflowLoadGates(unittest.TestCase):
         self.assertTrue(blockers)
 
     def test_dry_run_allowed_without_load(self):
-        with patch("mcp_server.gitea_check_pr_eligibility") as elig:
+        with patch("mcp_server.get_auth_header", return_value="Basic dGVzdA=="), \
+                patch("mcp_server._list_pr_lease_comments", return_value=[]), \
+                patch("mcp_server.gitea_check_pr_eligibility") as elig:
             elig.return_value = {
                 "eligible": True,
                 "authenticated_user": "rev",