better time usings

src/server/services/progress_service.py

@@ -9,7 +9,7 @@ from __future__ import annotations
 
 import asyncio
 from dataclasses import dataclass, field
-from datetime import datetime
+from datetime import datetime, timezone
 from enum import Enum
 from typing import Any, Callable, Dict, Optional
 
@@ -65,8 +65,8 @@ class ProgressUpdate:
     current: int = 0
     total: int = 0
     metadata: Dict[str, Any] = field(default_factory=dict)
-    started_at: datetime = field(default_factory=datetime.utcnow)
-    updated_at: datetime = field(default_factory=datetime.utcnow)
+    started_at: datetime = field(default_factory=lambda: datetime.now(timezone.utc))
+    updated_at: datetime = field(default_factory=lambda: datetime.now(timezone.utc))
 
     def to_dict(self) -> Dict[str, Any]:
         """Convert progress update to dictionary."""
@@ -254,7 +254,7 @@ class ProgressService:
                 update.percent = 0.0
 
             update.status = ProgressStatus.IN_PROGRESS
-            update.updated_at = datetime.utcnow()
+            update.updated_at = datetime.now(timezone.utc)
 
             # Only broadcast if significant change or forced
             percent_change = abs(update.percent - old_percent)
@@ -296,7 +296,7 @@ class ProgressService:
             update.message = message
             update.percent = 100.0
             update.current = update.total
-            update.updated_at = datetime.utcnow()
+            update.updated_at = datetime.now(timezone.utc)
 
             if metadata:
                 update.metadata.update(metadata)
@@ -345,7 +345,7 @@ class ProgressService:
             update = self._active_progress[progress_id]
             update.status = ProgressStatus.FAILED
             update.message = error_message
-            update.updated_at = datetime.utcnow()
+            update.updated_at = datetime.now(timezone.utc)
 
             if metadata:
                 update.metadata.update(metadata)
@@ -393,7 +393,7 @@ class ProgressService:
             update = self._active_progress[progress_id]
             update.status = ProgressStatus.CANCELLED
             update.message = message
-            update.updated_at = datetime.utcnow()
+            update.updated_at = datetime.now(timezone.utc)
 
             # Move to history
             del self._active_progress[progress_id]