fix: add try/finally safety net for lock release in beteiligte_sync handler – guarantees Redis key cleanup on any exit path

src/steps/crm/beteiligte/beteiligte_sync_event_step.py

@@ -88,7 +88,7 @@ async def handler(event_data: Dict[str, Any], ctx: FlowContext[Any]) -> None:
             ctx.logger.warn(f"⏸️  Sync bereits aktiv für {entity_id}, überspringe")
             return
         
-        # Lock erfolgreich acquired - MUSS im finally block released werden!
+        # Lock erfolgreich acquired
         try:
             # 2. FETCH ENTITY VON ESPOCRM
             try:
@@ -144,7 +144,7 @@ async def handler(event_data: Dict[str, Any], ctx: FlowContext[Any]) -> None:
                 await sync_utils.release_sync_lock(entity_id, 'failed', f'Unbekannte Aktion: {action}')
 
         except Exception as e:
-            # Unerwarteter Fehler während Sync - GARANTIERE Lock-Release
+            # Unerwarteter Fehler während Sync - Lock-Release via finally
             ctx.logger.error(f"❌ Unerwarteter Fehler im Sync-Handler: {e}")
             import traceback
             ctx.logger.error(traceback.format_exc())
@@ -157,15 +157,16 @@ async def handler(event_data: Dict[str, Any], ctx: FlowContext[Any]) -> None:
                     increment_retry=True
                 )
             except Exception as release_error:
-                # Selbst Lock-Release failed - logge kritischen Fehler
-                ctx.logger.critical(f"🚨 CRITICAL: Lock-Release failed für {entity_id}: {release_error}")
-                # Force Redis lock release
-                try:
-                    lock_key = f"sync_lock:cbeteiligte:{entity_id}"
-                    redis_client.delete(lock_key)
-                    ctx.logger.info(f"✅ Redis lock manuell released: {lock_key}")
-                except:
-                    pass
+                ctx.logger.critical(f"🚨 CRITICAL: release_sync_lock failed für {entity_id}: {release_error}")
+            raise
+
+        finally:
+            # Safety net: force Redis lock release regardless of outcome
+            try:
+                force_lock_key = f"sync_lock:cbeteiligte:{entity_id}"
+                redis_client.delete(force_lock_key)
+            except Exception as cleanup_err:
+                ctx.logger.error(f"❌ Force Lock-Release fehlgeschlagen: {cleanup_err}")
         
     except Exception as e:
         # Fehler VOR Lock-Acquire - kein Lock-Release nötig