fix: align test mocks with #399 lease gates and head SHA requirements

PR #416 introduced pr_work_lease reviewer blocks and mandatory full
40-hex expected_head_sha on mark/merge paths. Update audit, review,
permission-report, terminal hard-stop, inventory, and schema tests to
patch lease comment fetches, seed ready review decisions, and use
consistent HEAD_SHA constants so the full suite passes again.

tests/test_review_final_report_schema.py

@@ -19,7 +19,11 @@ def _minimal_review_report(**overrides):
         "- Issue/PR: #182 / PR #203",
         "- Branch/SHA: feat/x @ 0fdc8f582026b72a229d59a172c0a63ac4aaeaf9",
         "- Files changed: review_proofs.py",
-        "- Validation: pytest tests/test_review_proofs.py -q in branches/review-203",
+        "- Validation: pass: pytest tests/test_review_proofs.py -q in branches/review-203",
+        "- Reviewed head SHA: 0fdc8f582026b72a229d59a172c0a63ac4aaeaf9",
+        "- Final live head SHA before approval: 0fdc8f582026b72a229d59a172c0a63ac4aaeaf9",
+        "- Final live head SHA before merge: 0fdc8f582026b72a229d59a172c0a63ac4aaeaf9",
+        "- Push occurred during validation: no",
         "- Mutations: review only",
         "- File edits by reviewer: none",
         "- Worktree/index mutations: none",
@@ -80,7 +84,7 @@ class TestReviewFinalReportSchema(unittest.TestCase):
 
     def test_reviewed_head_without_validation_blocks(self):
         report = _minimal_review_report().replace(
-            "- Validation: pytest tests/test_review_proofs.py -q in branches/review-203",
+            "- Validation: pass: pytest tests/test_review_proofs.py -q in branches/review-203",
             "- Validation: not run",
         )
         report += "\n- Pinned reviewed head: 0fdc8f582026b72a229d59a172c0a63ac4aaeaf9"