feat(agent-runner): add admin reconcile primitives

src/langbot/pkg/agent/runner/run_ledger_store.py

@@ -211,6 +211,44 @@ class RunLedgerStore:
             await session.commit()
             return self._run_to_dict(run)
 
+    async def release_expired_claims(
+        self,
+        *,
+        now: datetime.datetime | None = None,
+        status: str = 'queued',
+        status_reason: str = 'claim lease expired',
+        limit: int = 100,
+    ) -> list[dict[str, typing.Any]]:
+        """Release claimed runs whose claim lease has expired."""
+        current_time = now or _utc_now()
+        if current_time.tzinfo is None:
+            current_time = current_time.replace(tzinfo=UTC)
+        limit = min(max(int(limit), 1), 500)
+
+        async with self._session_factory() as session:
+            result = await session.execute(
+                sqlalchemy.select(AgentRun)
+                .where(
+                    AgentRun.status == 'claimed',
+                    AgentRun.claim_lease_expires_at.is_not(None),
+                    AgentRun.claim_lease_expires_at <= current_time,
+                )
+                .order_by(AgentRun.claim_lease_expires_at.asc(), AgentRun.id.asc())
+                .limit(limit)
+            )
+            runs = result.scalars().all()
+            for run in runs:
+                run.status = status
+                run.status_reason = status_reason
+                run.claimed_by_runtime_id = None
+                run.claim_token = None
+                run.claim_lease_expires_at = None
+                run.updated_at = current_time
+                if status in TERMINAL_STATUSES:
+                    run.finished_at = run.finished_at or current_time
+            await session.commit()
+            return [self._run_to_dict(run) for run in runs]
+
     async def append_event(
         self,
         *,
@@ -254,6 +292,41 @@ class RunLedgerStore:
             await session.commit()
             return self._event_to_dict(row)
 
+    async def append_audit_event(
+        self,
+        *,
+        run_id: str,
+        event_type: str,
+        data: dict[str, typing.Any] | None = None,
+        metadata: dict[str, typing.Any] | None = None,
+    ) -> dict[str, typing.Any] | None:
+        """Append a Host-authored audit event after the current max sequence."""
+        async with self._session_factory() as session:
+            run = await self._get_run_row(session, run_id)
+            if run is None:
+                return None
+
+            result = await session.execute(
+                sqlalchemy.select(sqlalchemy.func.max(AgentRunEvent.sequence)).where(
+                    AgentRunEvent.run_id == run_id,
+                )
+            )
+            next_sequence = int(result.scalar_one_or_none() or 0) + 1
+            row = AgentRunEvent(
+                run_id=run_id,
+                sequence=next_sequence,
+                type=event_type,
+                data_json=_json_dumps(data or {}),
+                usage_json=None,
+                created_at=_utc_now(),
+                source='host',
+                artifact_refs_json=_json_dumps([]),
+                metadata_json=_json_dumps(metadata or {}),
+            )
+            session.add(row)
+            await session.commit()
+            return self._event_to_dict(row)
+
     async def finalize_run(
         self,
         *,
@@ -410,16 +483,34 @@ class RunLedgerStore:
         *,
         now: datetime.datetime | None = None,
         stale_status: str = 'stale',
+        stale_after_seconds: int | float | None = None,
     ) -> list[dict[str, typing.Any]]:
         """Mark runtimes stale when their heartbeat deadline has passed."""
         current_time = now or _utc_now()
         if current_time.tzinfo is None:
             current_time = current_time.replace(tzinfo=UTC)
+        stale_conditions: list[typing.Any] = [
+            sqlalchemy.and_(
+                AgentRuntime.heartbeat_deadline_at.is_not(None),
+                AgentRuntime.heartbeat_deadline_at < current_time,
+            )
+        ]
+        if stale_after_seconds is not None:
+            try:
+                stale_after_delta = datetime.timedelta(seconds=max(float(stale_after_seconds), 0))
+            except (TypeError, ValueError):
+                stale_after_delta = None
+            if stale_after_delta is not None:
+                stale_conditions.append(
+                    sqlalchemy.and_(
+                        AgentRuntime.last_heartbeat_at.is_not(None),
+                        AgentRuntime.last_heartbeat_at < current_time - stale_after_delta,
+                    )
+                )
         async with self._session_factory() as session:
             result = await session.execute(
                 sqlalchemy.select(AgentRuntime).where(
-                    AgentRuntime.heartbeat_deadline_at.is_not(None),
-                    AgentRuntime.heartbeat_deadline_at < current_time,
+                    sqlalchemy.or_(*stale_conditions),
                     AgentRuntime.status != stale_status,
                 )
             )

src/langbot/pkg/plugin/handler.py

@@ -495,6 +495,67 @@ def _project_event_record_for_api(event: dict[str, Any]) -> dict[str, Any]:
     }
 
 
+def _project_runner_descriptor_for_api(descriptor: Any) -> dict[str, Any]:
+    """Project an AgentRunnerDescriptor-like object onto a JSON dict."""
+    if isinstance(descriptor, dict):
+        return dict(descriptor)
+    if hasattr(descriptor, 'model_dump'):
+        return descriptor.model_dump(mode='json')
+    return {
+        'id': getattr(descriptor, 'id', None),
+        'source': getattr(descriptor, 'source', None),
+        'label': getattr(descriptor, 'label', {}),
+        'description': getattr(descriptor, 'description', None),
+        'plugin_author': getattr(descriptor, 'plugin_author', None),
+        'plugin_name': getattr(descriptor, 'plugin_name', None),
+        'runner_name': getattr(descriptor, 'runner_name', None),
+        'plugin_version': getattr(descriptor, 'plugin_version', None),
+        'config_schema': getattr(descriptor, 'config_schema', []),
+        'capabilities': getattr(descriptor, 'capabilities', {}),
+        'permissions': getattr(descriptor, 'permissions', {}),
+        'raw_manifest': getattr(descriptor, 'raw_manifest', {}),
+    }
+
+
+async def _record_agent_runner_admin_action(
+    ap: app.Application,
+    store: Any,
+    *,
+    action: str,
+    caller_plugin_identity: str | None,
+    permission: str,
+    durable_run_id: str | None = None,
+    target_runtime_id: str | None = None,
+    detail: dict[str, Any] | None = None,
+) -> None:
+    """Record a small audit trail for privileged AgentRunner operations."""
+    audit_data: dict[str, Any] = {
+        'action': action,
+        'caller_plugin_identity': caller_plugin_identity,
+        'permission': permission,
+    }
+    if durable_run_id:
+        audit_data['target_run_id'] = durable_run_id
+    if target_runtime_id:
+        audit_data['target_runtime_id'] = target_runtime_id
+    if detail:
+        audit_data['detail'] = detail
+
+    ap.logger.info('Agent runner admin action: %s', audit_data)
+    if not durable_run_id or store is None or not hasattr(store, 'append_audit_event'):
+        return
+
+    try:
+        await store.append_audit_event(
+            run_id=str(durable_run_id),
+            event_type=f'admin.{action}',
+            data=audit_data,
+            metadata={'permission': permission},
+        )
+    except Exception as exc:
+        ap.logger.warning(f'Failed to record AgentRunner admin audit event: {exc}', exc_info=True)
+
+
 def _normalize_uuid_list(values: Any) -> list[str]:
     """Normalize a user/config supplied UUID list while preserving order."""
     if not isinstance(values, list):
@@ -2056,6 +2117,15 @@ class RuntimeConnectionHandler(handler.Handler):
                     return handler.ActionResponse.error(message=f'Run {target_run_id} not found')
                 if not is_admin and not _run_matches_run_scope(session, run):
                     return handler.ActionResponse.error(message=f'Run {target_run_id} is not accessible by this run')
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='run_get',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=AGENT_RUN_ADMIN_PERMISSION,
+                        detail={'target_run_id': str(target_run_id)},
+                    )
                 return handler.ActionResponse.success(data=run)
             except Exception as e:
                 self.ap.logger.error(f'RUN_GET error: {e}', exc_info=True)
@@ -2131,6 +2201,18 @@ class RuntimeConnectionHandler(handler.Handler):
                     limit=limit,
                     **scope_filters,
                 )
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='run_list',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=AGENT_RUN_ADMIN_PERMISSION,
+                        detail={
+                            'statuses': [str(status) for status in statuses] if statuses else None,
+                            'limit': limit,
+                        },
+                    )
                 return handler.ActionResponse.success(
                     data={
                         'items': items,
@@ -2143,6 +2225,65 @@ class RuntimeConnectionHandler(handler.Handler):
                 self.ap.logger.error(f'RUN_LIST error: {e}', exc_info=True)
                 return handler.ActionResponse.error(message=f'Run list error: {e}')
 
+        @self.action(_plugin_runtime_action('RUNNER_LIST', 'runner_list'))
+        async def runner_list(data: dict[str, Any]) -> handler.ActionResponse:
+            """List Host-discovered AgentRunner descriptors."""
+            run_id = data.get('run_id')
+            caller_plugin_identity = data.get('caller_plugin_identity')
+            is_admin = _has_agent_runner_admin_permission(
+                self.ap,
+                caller_plugin_identity,
+                AGENT_RUN_ADMIN_PERMISSION,
+            )
+
+            if not is_admin:
+                return handler.ActionResponse.error(message='Runner list access not authorized')
+
+            _session, error = await _validate_agent_run_session(
+                run_id,
+                caller_plugin_identity,
+                self.ap,
+                'Runner list',
+                api_capability='runner_list',
+                allow_persistent_authorization=True,
+                admin_permission=AGENT_RUN_ADMIN_PERMISSION,
+            )
+            if error:
+                return error
+
+            include_plugins = data.get('include_plugins')
+            if include_plugins is not None and not isinstance(include_plugins, list):
+                return handler.ActionResponse.error(message='include_plugins must be a list')
+
+            registry = getattr(self.ap, 'agent_runner_registry', None)
+            if registry is None:
+                return handler.ActionResponse.success(data={'items': []})
+
+            try:
+                runners = await registry.list_runners(
+                    bound_plugins=[str(item) for item in include_plugins] if include_plugins else None,
+                    use_cache=bool(data.get('use_cache', True)),
+                )
+                items = [_project_runner_descriptor_for_api(item) for item in runners]
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        None,
+                        action='runner_list',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=AGENT_RUN_ADMIN_PERMISSION,
+                        detail={
+                            'include_plugins': [str(item) for item in include_plugins]
+                            if include_plugins
+                            else None,
+                            'count': len(items),
+                        },
+                    )
+                return handler.ActionResponse.success(data={'items': items})
+            except Exception as e:
+                self.ap.logger.error(f'RUNNER_LIST error: {e}', exc_info=True)
+                return handler.ActionResponse.error(message=f'Runner list error: {e}')
+
         @self.action(_plugin_runtime_action('RUN_EVENTS_PAGE', 'run_events_page'))
         async def run_events_page(data: dict[str, Any]) -> handler.ActionResponse:
             """Page result events for one Host-owned run visible to current run."""
@@ -2200,6 +2341,15 @@ class RuntimeConnectionHandler(handler.Handler):
                     limit=limit,
                     direction=str(direction or 'forward'),
                 )
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='run_events_page',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=AGENT_RUN_ADMIN_PERMISSION,
+                        detail={'target_run_id': str(target_run_id), 'limit': limit},
+                    )
                 return handler.ActionResponse.success(
                     data={
                         'items': items,
@@ -2258,6 +2408,16 @@ class RuntimeConnectionHandler(handler.Handler):
                 )
                 if not updated:
                     return handler.ActionResponse.error(message=f'Run {target_run_id} not found')
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='run_cancel',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=AGENT_RUN_ADMIN_PERMISSION,
+                        durable_run_id=str(target_run_id),
+                        detail={'status_reason': data.get('status_reason') or data.get('reason')},
+                    )
                 return handler.ActionResponse.success(data=updated)
             except Exception as e:
                 self.ap.logger.error(f'RUN_CANCEL error: {e}', exc_info=True)
@@ -2328,6 +2488,16 @@ class RuntimeConnectionHandler(handler.Handler):
                     artifact_refs=artifact_refs,
                     metadata=metadata,
                 )
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='run_append_result',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=AGENT_RUN_ADMIN_PERMISSION,
+                        durable_run_id=str(target_run_id),
+                        detail={'event_type': str(event_type), 'sequence': sequence},
+                    )
                 return handler.ActionResponse.success(data=event)
             except Exception as e:
                 self.ap.logger.error(f'RUN_APPEND_RESULT error: {e}', exc_info=True)
@@ -2386,6 +2556,16 @@ class RuntimeConnectionHandler(handler.Handler):
                 )
                 if not updated:
                     return handler.ActionResponse.error(message=f'Run {target_run_id} not found')
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='run_finalize',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=AGENT_RUN_ADMIN_PERMISSION,
+                        durable_run_id=str(target_run_id),
+                        detail={'status': str(status)},
+                    )
                 return handler.ActionResponse.success(data=updated)
             except Exception as e:
                 self.ap.logger.error(f'RUN_FINALIZE error: {e}', exc_info=True)
@@ -2435,6 +2615,16 @@ class RuntimeConnectionHandler(handler.Handler):
                     metadata=data.get('metadata') if isinstance(data.get('metadata'), dict) else {},
                     heartbeat_deadline_seconds=_deadline_seconds_from_payload(data),
                 )
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='runtime_register',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=RUNTIME_ADMIN_PERMISSION,
+                        target_runtime_id=str(runtime_id),
+                        detail={'status': runtime.get('status')},
+                    )
                 return handler.ActionResponse.success(data=runtime)
             except Exception as e:
                 self.ap.logger.error(f'RUNTIME_REGISTER error: {e}', exc_info=True)
@@ -2483,6 +2673,16 @@ class RuntimeConnectionHandler(handler.Handler):
                 )
                 if runtime is None:
                     return handler.ActionResponse.error(message=f'Runtime {runtime_id} not found')
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='runtime_heartbeat',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=RUNTIME_ADMIN_PERMISSION,
+                        target_runtime_id=str(runtime_id),
+                        detail={'status': runtime.get('status')},
+                    )
                 return handler.ActionResponse.success(data=runtime)
             except Exception as e:
                 self.ap.logger.error(f'RUNTIME_HEARTBEAT error: {e}', exc_info=True)
@@ -2533,6 +2733,18 @@ class RuntimeConnectionHandler(handler.Handler):
                         for runtime in runtimes
                         if all(runtime.get('labels', {}).get(key) == value for key, value in labels.items())
                     ]
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='runtime_list',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=RUNTIME_ADMIN_PERMISSION,
+                        detail={
+                            'statuses': [str(status) for status in statuses] if statuses else None,
+                            'limit': data.get('limit', 50),
+                        },
+                    )
                 return handler.ActionResponse.success(
                     data={
                         'items': runtimes,
@@ -2545,6 +2757,71 @@ class RuntimeConnectionHandler(handler.Handler):
                 self.ap.logger.error(f'RUNTIME_LIST error: {e}', exc_info=True)
                 return handler.ActionResponse.error(message=f'Runtime list error: {e}')
 
+        @self.action(_plugin_runtime_action('RUNTIME_RECONCILE', 'runtime_reconcile'))
+        async def runtime_reconcile(data: dict[str, Any]) -> handler.ActionResponse:
+            """Reconcile stale runtime heartbeats and expired claim leases."""
+            run_id = data.get('run_id')
+            caller_plugin_identity = data.get('caller_plugin_identity')
+            is_admin = _has_agent_runner_admin_permission(
+                self.ap,
+                caller_plugin_identity,
+                RUNTIME_ADMIN_PERMISSION,
+            )
+
+            if not is_admin:
+                return handler.ActionResponse.error(message='Runtime reconcile access not authorized')
+
+            _session, error = await _validate_agent_run_session(
+                run_id,
+                caller_plugin_identity,
+                self.ap,
+                'Runtime reconcile',
+                api_capability='runtime_reconcile',
+                admin_permission=RUNTIME_ADMIN_PERMISSION,
+            )
+            if error:
+                return error
+
+            stale_after_seconds = data.get('stale_after_seconds')
+            if stale_after_seconds is not None:
+                try:
+                    stale_after_seconds = max(float(stale_after_seconds), 0)
+                except (TypeError, ValueError):
+                    return handler.ActionResponse.error(message='stale_after_seconds must be a number')
+
+            from ..agent.runner.run_ledger_store import RunLedgerStore
+
+            store = RunLedgerStore(self.ap.persistence_mgr.get_db_engine())
+
+            try:
+                stale_runtimes = await store.mark_stale_runtimes(
+                    stale_after_seconds=stale_after_seconds,
+                )
+                released_claims = await store.release_expired_claims()
+                if is_admin:
+                    await _record_agent_runner_admin_action(
+                        self.ap,
+                        store,
+                        action='runtime_reconcile',
+                        caller_plugin_identity=caller_plugin_identity,
+                        permission=RUNTIME_ADMIN_PERMISSION,
+                        detail={
+                            'stale_count': len(stale_runtimes),
+                            'released_claim_count': len(released_claims),
+                        },
+                    )
+                return handler.ActionResponse.success(
+                    data={
+                        'stale_runtimes': stale_runtimes,
+                        'released_claims': released_claims,
+                        'stale_count': len(stale_runtimes),
+                        'released_claim_count': len(released_claims),
+                    }
+                )
+            except Exception as e:
+                self.ap.logger.error(f'RUNTIME_RECONCILE error: {e}', exc_info=True)
+                return handler.ActionResponse.error(message=f'Runtime reconcile error: {e}')
+
         @self.action(_plugin_runtime_action('RUN_CLAIM', 'run_claim'))
         async def run_claim(data: dict[str, Any]) -> handler.ActionResponse:
             """Claim one queued run for a runtime lease."""

tests/unit_tests/agent/test_run_ledger_api_auth.py

@@ -2,11 +2,15 @@
 
 from __future__ import annotations
 
+import datetime
 from types import SimpleNamespace
 from unittest.mock import MagicMock
 
 import pytest
+import sqlalchemy
+from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.ext.asyncio import create_async_engine
+from sqlalchemy.orm import sessionmaker
 
 from langbot.pkg.agent.runner.run_ledger_store import RunLedgerStore
 from langbot.pkg.agent.runner.session_registry import AgentRunSessionRegistry
@@ -29,10 +33,11 @@ class FakeConnection:
 
 
 class FakeApplication:
-    def __init__(self, db_engine, admin_plugins=None):
+    def __init__(self, db_engine, admin_plugins=None, runner_registry=None):
         self.logger = MagicMock()
         self.persistence_mgr = MagicMock()
         self.persistence_mgr.get_db_engine = MagicMock(return_value=db_engine)
+        self.agent_runner_registry = runner_registry
         self.instance_config = SimpleNamespace(
             data={
                 'agent_runner': {
@@ -62,11 +67,21 @@ async def db_engine():
     await engine.dispose()
 
 
-def _handler(db_engine, admin_plugins=None):
+class FakeRunnerRegistry:
+    def __init__(self, runners):
+        self.runners = runners
+        self.calls = []
+
+    async def list_runners(self, *, bound_plugins=None, use_cache=True):
+        self.calls.append({'bound_plugins': bound_plugins, 'use_cache': use_cache})
+        return self.runners
+
+
+def _handler(db_engine, admin_plugins=None, runner_registry=None):
     async def fake_disconnect():
         return True
 
-    fake_app = FakeApplication(db_engine, admin_plugins=admin_plugins)
+    fake_app = FakeApplication(db_engine, admin_plugins=admin_plugins, runner_registry=runner_registry)
     return RuntimeConnectionHandler(FakeConnection(), fake_disconnect, fake_app)
 
 
@@ -353,6 +368,60 @@ async def test_agent_run_admin_permission_string_allows_without_run_id(db_engine
     assert [run.run_id for run in page.items] == ['run_1']
 
 
+@pytest.mark.asyncio
+async def test_agent_run_admin_can_list_runner_registry_without_run_id(db_engine):
+    runner_registry = FakeRunnerRegistry(
+        [
+            {
+                'id': 'plugin:test/runner/default',
+                'source': 'plugin',
+                'plugin_author': 'test',
+                'plugin_name': 'runner',
+                'runner_name': 'default',
+                'label': {'en_US': 'Default'},
+            }
+        ]
+    )
+    handler = _handler(
+        db_engine,
+        admin_plugins=[
+            {
+                'identity': 'langbot/control',
+                'permissions': ['agent_run:admin'],
+            }
+        ],
+        runner_registry=runner_registry,
+    )
+    runner_list = handler.actions['runner_list']
+
+    result = await runner_list(
+        {
+            'caller_plugin_identity': 'langbot/control',
+            'include_plugins': ['test/runner'],
+        }
+    )
+
+    assert result.code == 0
+    assert result.data['items'][0]['id'] == 'plugin:test/runner/default'
+    assert runner_registry.calls == [
+        {
+            'bound_plugins': ['test/runner'],
+            'use_cache': True,
+        }
+    ]
+
+
+@pytest.mark.asyncio
+async def test_unconfigured_plugin_cannot_list_runner_registry(db_engine):
+    handler = _handler(db_engine, runner_registry=FakeRunnerRegistry([]))
+    runner_list = handler.actions['runner_list']
+
+    result = await runner_list({'caller_plugin_identity': 'test/runner'})
+
+    assert result.code != 0
+    assert 'not authorized' in result.message.lower()
+
+
 @pytest.mark.asyncio
 async def test_agent_run_admin_can_get_and_page_cross_scope_with_own_run_session(session_registry, db_engine):
     await _register_session(session_registry, available_apis={})
@@ -504,6 +573,13 @@ async def test_agent_run_admin_can_cancel_cross_scope_with_own_run_session(sessi
     assert run.run_id == 'run_other'
     assert run.cancel_requested_at is not None
     assert run.status_reason == 'admin requested'
+    events, _next_cursor, _prev_cursor, _has_more = await RunLedgerStore(db_engine).page_run_events(
+        run_id='run_other',
+    )
+    assert [event['type'] for event in events] == ['message.completed', 'admin.run_cancel']
+    assert events[1]['source'] == 'host'
+    assert events[1]['data']['caller_plugin_identity'] == 'test/runner'
+    assert events[1]['metadata'] == {'permission': 'agent_run:admin'}
 
 
 @pytest.mark.asyncio
@@ -682,6 +758,80 @@ async def test_runtime_admin_can_register_list_and_claim_without_run_id(db_engin
     assert claimed.data['claimed_by_runtime_id'] == 'runtime_1'
 
 
+@pytest.mark.asyncio
+async def test_runtime_admin_can_reconcile_without_run_id(db_engine):
+    store = RunLedgerStore(db_engine)
+    await store.register_runtime(
+        runtime_id='runtime_stale',
+        display_name='Runtime Stale',
+        heartbeat_deadline_seconds=60,
+    )
+    await store.create_run(
+        run_id='claimed_run',
+        event_id='evt_claimed',
+        binding_id='binding_1',
+        runner_id='plugin:other/runner/default',
+        status='queued',
+        queue_name='default',
+    )
+    claim = await store.claim_next_run(runtime_id='runtime_stale', queue_name='default', lease_seconds=60)
+    assert claim is not None
+
+    session_factory = sessionmaker(db_engine, class_=AsyncSession, expire_on_commit=False)
+    expired_at = datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(seconds=1)
+    async with session_factory() as session:
+        await session.execute(
+            sqlalchemy.update(agent_run_model.AgentRun)
+            .where(agent_run_model.AgentRun.run_id == 'claimed_run')
+            .values(claim_lease_expires_at=expired_at)
+        )
+        await session.execute(
+            sqlalchemy.update(agent_run_model.AgentRuntime)
+            .where(agent_run_model.AgentRuntime.runtime_id == 'runtime_stale')
+            .values(
+                last_heartbeat_at=expired_at,
+                heartbeat_deadline_at=expired_at,
+            )
+        )
+        await session.commit()
+
+    handler = _handler(
+        db_engine,
+        admin_plugins=[
+            {
+                'identity': 'langbot/control',
+                'permissions': ['runtime:admin'],
+            }
+        ],
+    )
+    runtime_reconcile = handler.actions['runtime_reconcile']
+
+    result = await runtime_reconcile({'caller_plugin_identity': 'langbot/control'})
+
+    assert result.code == 0
+    assert result.data['stale_count'] == 1
+    assert result.data['released_claim_count'] == 1
+    assert result.data['stale_runtimes'][0]['runtime_id'] == 'runtime_stale'
+    assert result.data['released_claims'][0]['run_id'] == 'claimed_run'
+    assert (await store.get_runtime('runtime_stale'))['status'] == 'stale'
+    released_run = await store.get_run('claimed_run')
+    assert released_run is not None
+    assert released_run['status'] == 'queued'
+    assert released_run['claimed_by_runtime_id'] is None
+    assert released_run['claim_token'] is None
+
+
+@pytest.mark.asyncio
+async def test_unconfigured_plugin_cannot_reconcile_runtime(db_engine):
+    handler = _handler(db_engine)
+    runtime_reconcile = handler.actions['runtime_reconcile']
+
+    result = await runtime_reconcile({'caller_plugin_identity': 'test/runner'})
+
+    assert result.code != 0
+    assert 'not authorized' in result.message.lower()
+
+
 @pytest.mark.asyncio
 async def test_disabled_admin_plugin_entry_does_not_grant_access(session_registry, db_engine):
     await _register_session(session_registry, available_apis={})

tests/unit_tests/agent/test_run_ledger_store.py

@@ -124,6 +124,84 @@ async def test_expired_claim_can_be_reclaimed(store, db_engine):
     assert reclaimed['dispatch_attempts'] == 2
 
 
+@pytest.mark.asyncio
+async def test_release_expired_claims_requeues_runs(store, db_engine):
+    await store.create_run(
+        run_id='run-expired-release',
+        event_id='evt-3',
+        binding_id='binding-1',
+        runner_id='runner-a',
+        status='queued',
+        queue_name='default',
+    )
+    await store.create_run(
+        run_id='run-active-claim',
+        event_id='evt-4',
+        binding_id='binding-1',
+        runner_id='runner-a',
+        status='queued',
+        queue_name='default',
+    )
+    expired_claim = await store.claim_next_run(runtime_id='runtime-a', queue_name='default', lease_seconds=60)
+    active_claim = await store.claim_next_run(runtime_id='runtime-b', queue_name='default', lease_seconds=60)
+    assert expired_claim is not None
+    assert active_claim is not None
+
+    session_factory = sessionmaker(db_engine, class_=AsyncSession, expire_on_commit=False)
+    async with session_factory() as session:
+        await session.execute(
+            sqlalchemy.update(AgentRun)
+            .where(AgentRun.run_id == 'run-expired-release')
+            .values(claim_lease_expires_at=datetime.datetime.now(UTC) - datetime.timedelta(seconds=1))
+        )
+        await session.commit()
+
+    released = await store.release_expired_claims()
+
+    assert [run['run_id'] for run in released] == ['run-expired-release']
+    assert released[0]['status'] == 'queued'
+    assert released[0]['status_reason'] == 'claim lease expired'
+    assert released[0]['claimed_by_runtime_id'] is None
+    assert released[0]['claim_token'] is None
+    assert released[0]['claim_lease_expires_at'] is None
+
+    active = await store.get_run('run-active-claim')
+    assert active is not None
+    assert active['status'] == 'claimed'
+    assert active['claim_token'] == active_claim['claim_token']
+
+
+@pytest.mark.asyncio
+async def test_append_audit_event_uses_next_sequence(store):
+    await store.create_run(
+        run_id='run-audit',
+        event_id='evt-5',
+        binding_id='binding-1',
+        runner_id='runner-a',
+    )
+    await store.append_event(
+        run_id='run-audit',
+        sequence=1,
+        event_type='message.completed',
+        data={'ok': True},
+    )
+
+    event = await store.append_audit_event(
+        run_id='run-audit',
+        event_type='admin.run_cancel',
+        data={'action': 'run_cancel'},
+        metadata={'permission': 'agent_run:admin'},
+    )
+
+    assert event is not None
+    assert event['sequence'] == 2
+    assert event['type'] == 'admin.run_cancel'
+    assert event['source'] == 'host'
+    assert event['data'] == {'action': 'run_cancel'}
+    assert event['metadata'] == {'permission': 'agent_run:admin'}
+    assert await store.append_audit_event(run_id='missing', event_type='admin.missing') is None
+
+
 @pytest.mark.asyncio
 async def test_runtime_register_heartbeat_list_and_mark_stale(store):
     registered = await store.register_runtime(