fix: [30388f42] Deaktiviere WAL-Modus im Company Explorer (Synology Kompatibilität)

- Entfernt PRAGMA journal_mode=WAL, da dies auf dem Synology-Docker-Volume zu persistierenden Transaktions-Rollbacks führt.
- Behält PRAGMA mmap_size=0 und Timeout-Erhöhung bei, um Locking-Probleme im Standard-Journal-Modus zu minimieren.
- Ziel: Erfolgreiche Datenbank-Commits wiederherstellen.

company-explorer/backend/database.py

@@ -10,13 +10,11 @@ engine = create_engine(
     connect_args={"check_same_thread": False, "timeout": 30}
 )
 
-# Enable WAL mode for SQLite with Docker/Synology optimizations
+# Disable mmap to avoid Docker volume issues on Synology
 @event.listens_for(engine, "connect")
 def set_sqlite_pragma(dbapi_connection, connection_record):
     cursor = dbapi_connection.cursor()
-    cursor.execute("PRAGMA journal_mode=WAL")
-    cursor.execute("PRAGMA synchronous=NORMAL") # Less aggressive syncing, better for concurrent access
-    cursor.execute("PRAGMA mmap_size=0") # Disable mmap to fix potential Docker volume I/O errors
+    cursor.execute("PRAGMA mmap_size=0") 
     cursor.close()
 
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)