zeitzohne nochmal angepasst

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

@@ -4,7 +4,8 @@ import hashlib
 import json
 import os
 from glob import glob
-from datetime import datetime, timezone
+from datetime import datetime
+from zoneinfo import ZoneInfo
 from threading import Lock
 from typing import Any
 
@@ -30,12 +31,12 @@ def _resolve_latest_path(chat_id: str) -> str | None:
     return None
 
 
-def _utc_now() -> str:
-    return datetime.now(timezone.mez).strftime("%Y-%m-%dT%H:%M:%SZ")
+def _mez_now() -> str:
+    return datetime.now(ZoneInfo("Europe/Berlin")).strftime("%Y-%m-%dT%H:%M:%SZ")
 
 
 def _touch(sheet: dict[str, Any]) -> None:
-    sheet["updated_at"] = _utc_now()
+    sheet["updated_at"] = _mez_now()
 
 
 def touch_sheet(sheet: dict[str, Any]) -> None:
@@ -56,7 +57,7 @@ def get_chat_id(messages: list[dict], draft: str | None = None) -> str:
 
 
 def init_sheet_base(chat_id: str, messages: list[dict]) -> dict[str, Any]:
-    timestamp = _utc_now()
+    timestamp = _mez_now()
     return {
         "chat_id": chat_id,
         "created_at": timestamp,
@@ -190,7 +191,7 @@ def get_decisions(sheet: dict[str, Any]) -> list[dict[str, Any]]:
 
 
 def add_decision(sheet: dict[str, Any], decision: dict[str, Any]) -> None:
-    entry = {"timestamp": _utc_now(), **decision}
+    entry = {"timestamp": _mez_now(), **decision}
     sheet.setdefault("decisions", []).append(entry)
     _touch(sheet)
 

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

 import json
 import os
-from datetime import datetime, timezone
+from datetime import datetime
+from zoneinfo import ZoneInfo
 
 
 def format_log_timestamp(created_at: str | None) -> str:
     if not created_at:
-        return datetime.now(timezone.mez).strftime("%Y-%m-%dT%H:%M:%SZ")
+        return datetime.now(ZoneInfo("Europe/Berlin")).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")