zeitzone angepasst

math-tutor/backend/app/deterministic_services/context_stores/context_store_base.py

@@ -4,7 +4,7 @@ import hashlib
 import json
 import os
 from glob import glob
-from datetime import datetime
+from datetime import datetime, timezone
 from threading import Lock
 from typing import Any
 
@@ -31,7 +31,7 @@ def _resolve_latest_path(chat_id: str) -> str | None:
 
 
 def _utc_now() -> str:
-    return datetime.now().strftime("%Y-%m-%dT%H:%M:%SZ")
+    return datetime.now(timezone.mez).strftime("%Y-%m-%dT%H:%M:%SZ")
 
 
 def _touch(sheet: dict[str, Any]) -> None:

math-tutor/backend/app/deterministic_services/tool_logging.py

@@ -5,7 +5,7 @@ from datetime import datetime, timezone
 
 def format_log_timestamp(created_at: str | None) -> str:
     if not created_at:
-        return datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
+        return datetime.now(timezone.mez).strftime("%Y-%m-%dT%H:%M:%SZ")
     try:
         parsed = datetime.strptime(created_at, "%Y-%m-%dT%H:%M:%SZ")
         return parsed.strftime("%Y-%m-%dT%H:%M:%SZ")