fix(monitoring): restore Cloud in-flight snapshots and collapsed dock

src/langbot/pkg/api/http/service/monitoring.py

@@ -1691,9 +1691,14 @@ class MonitoringService(ExecutionDetailsMixin):
 
         workspace = require_workspace_uuid(context)
         active = await self.get_executions(context, statuses=['running', 'queued'], limit=100, include_summary=False)
+        # Execution timestamps are stored as UTC without a timezone. asyncpg
+        # rejects aware datetimes for these columns, even though SQLite accepts them.
+        recent_start = datetime.datetime.now(datetime.timezone.utc).replace(tzinfo=None) - datetime.timedelta(
+            seconds=30
+        )
         recent = await self.get_executions(
             context,
-            start_time=datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(seconds=30),
+            start_time=recent_start,
             limit=100,
             include_summary=False,
         )

src/langbot/pkg/utils/inflight.py

@@ -7,9 +7,13 @@ No payloads or subscriptions survive the final viewer disconnecting.
 
 import asyncio
 import contextlib
+import logging
 import time
 
 
+logger = logging.getLogger(__name__)
+
+
 class InflightHub:
     def __init__(self):
         self.channels = {}
@@ -75,6 +79,8 @@ class InflightHub:
                 snapshot = await loader()
                 frame = {'kind': 'snapshot', 'data': snapshot}
             except Exception:
+                if previous is None or previous['kind'] != 'unavailable':
+                    logger.exception('Failed to load in-flight monitoring snapshot')
                 frame = {'kind': 'unavailable'}
             # Heartbeats are sent separately; unchanged snapshots generate no traffic.
             if frame != previous: