fix: read the real commit key (hash) and audit the restore-unblock path

- The auto-pause checkpoint and _extract_first_commit_sha read commit dicts by
  key 'sha', but persisted commits are keyed 'hash' (CommitRef.hash) — the prior
  change stopped the crash but silently dropped every ref. Read 'hash' (sha
  fallback) at both sites; the test now uses the production dict shape so the
  regression can't hide.
- unblock_with_restore set status directly and skipped the audit log; emit the
  status-transition audit there too, like the other direct-set paths.

tests/unit/gateway/test_auto_pause_checkpoint.py

@@ -144,7 +144,10 @@ async def test_i_am_idle_with_commits_includes_last_three_in_remaining_work() ->
     agent_id = uuid4()
     task_id = uuid4()
 
-    commits = [MagicMock(sha=f"sha{i}") for i in range(5)]
+    # Production shape: task.commits is a JSON list[dict] keyed by `hash`
+    # (CommitRef.hash) — NOT `sha`. A prior fix read `sha` and silently lost
+    # every ref; this test uses the real shape so the regression can't hide.
+    commits = [{"hash": f"hash{i}", "message": f"c{i}"} for i in range(5)]
     task_obj = MagicMock()
     task_obj.id = task_id
     task_obj.status = "in_progress"
@@ -163,12 +166,10 @@ async def test_i_am_idle_with_commits_includes_last_three_in_remaining_work() ->
 
     call_kwargs = task_svc.add_checkpoint.await_args
     remaining = call_kwargs.kwargs.get("remaining_work", [])
-    # Last 3 commit SHAs should appear somewhere in remaining_work entries
-    last_3_shas = {c.sha for c in commits[-3:]}
-    mentioned_shas = {entry for entry in remaining if isinstance(entry, str)}
-    assert last_3_shas & mentioned_shas or any(
-        sha in str(remaining) for sha in last_3_shas
-    )
+    # Last 3 commit hashes (the real persisted key) must appear in remaining_work.
+    last_3 = {c["hash"] for c in commits[-3:]}
+    mentioned = {entry for entry in remaining if isinstance(entry, str)}
+    assert last_3 & mentioned or any(h in str(remaining) for h in last_3)
 
 
 @pytest.mark.asyncio

tests/unit/services/test_escalation_board_guard.py

@@ -393,3 +393,32 @@ async def test_apply_escalation_emits_blocked_audit_event() -> None:
     assert kwargs["event_type"] == "task.blocked"
     assert kwargs["details"]["from_status"] == "in_progress"
     assert kwargs["details"]["to_status"] == "blocked"
+
+
+@pytest.mark.asyncio
+async def test_unblock_with_restore_emits_audit_event() -> None:
+    """The PM restore path sets status directly (bypassing the validated
+    transition) and used to skip the audit log; it must record the transition."""
+    svc = _service()
+    task = MagicMock(
+        id=uuid4(),
+        status=TaskStatus.BLOCKED,
+        pre_block_state="in_progress",
+        pre_block_assignee=None,
+        claimed_by=uuid4(),
+    )
+    _bind(svc, "get", AsyncMock(return_value=task))
+    audit_mock = MagicMock(log_task_event=AsyncMock())
+
+    with patch("roboco.services.audit.get_audit_service", return_value=audit_mock):
+        await svc.unblock_with_restore(uuid4(), uuid4(), restore=True)
+        pending = list(svc._background_tasks)
+        if pending:
+            await asyncio.gather(*pending, return_exceptions=True)
+
+    assert task.status == TaskStatus.IN_PROGRESS
+    audit_mock.log_task_event.assert_awaited_once()
+    kwargs = audit_mock.log_task_event.await_args.kwargs
+    assert kwargs["event_type"] == "task.in_progress"
+    assert kwargs["details"]["from_status"] == "blocked"
+    assert kwargs["details"]["to_status"] == "in_progress"