[34588f42] Fix: Robuste Zeitzonen-Handhabung (Europe/Berlin) für Scheduling

- Hardcodierter UTC+2 Offset durch ZoneInfo('Europe/Berlin') ersetzt, um automatische Sommer-/Winterzeit-Umstellung sicherzustellen.

fotograf-de-scraper/backend/publish_request_api.py

@@ -10,9 +10,14 @@ import time
 import asyncio
 from typing import List, Dict, Optional
 
+from zoneinfo import ZoneInfo
+
 router = APIRouter(prefix="/api/publish-request", tags=["publish-request"])
 logger = logging.getLogger("publish-request")
 
+# Timezone for Berlin
+TZ_BERLIN = ZoneInfo("Europe/Berlin")
+
 # Official Project Signature
 SIGNATURE_HTML = """
 <br><br>
@@ -44,8 +49,8 @@ class SendReleaseRequest(BaseModel):
 
 async def delayed_send(emails: List[Dict[str, str]], scheduled_time: str, db_session_factory):
     try:
-        # Calculate delay
-        now = datetime.datetime.now(datetime.timezone(datetime.timedelta(hours=2))) # Berlin Time Approx
+        # Calculate delay using Berlin Timezone
+        now = datetime.datetime.now(TZ_BERLIN)
         target_h, target_m = map(int, scheduled_time.split(":"))
         target_time = now.replace(hour=target_h, minute=target_m, second=0, microsecond=0)
         
@@ -53,7 +58,7 @@ async def delayed_send(emails: List[Dict[str, str]], scheduled_time: str, db_ses
             target_time += datetime.timedelta(days=1)
             
         delay_seconds = (target_time - now).total_seconds()
-        logger.info(f"Scheduling {len(emails)} emails for {scheduled_time} (in {delay_seconds} seconds)")
+        logger.info(f"Scheduling {len(emails)} emails for {scheduled_time} Berlin Time (in {delay_seconds} seconds)")
         
         await asyncio.sleep(delay_seconds)