🔧 Fix sample data function name in init_db.py

Updated import to use correct function name 'insert_sample_data' instead of 'insert_enhanced_sample_data' to match the updated sample_data.py implementation.

backend/database/init_db.py

@@ -335,13 +335,13 @@ def init_database(reset=False, force=False):
         logger.info("Empty database detected, inserting sample data for better user experience...")
         try:
             # Import here to avoid circular imports
-            from .sample_data import insert_enhanced_sample_data
+            from .sample_data import insert_sample_data
             from . import SessionLocal
             
             # Use SQLAlchemy session for sample data insertion
             session = SessionLocal()
             try:
-                results = insert_enhanced_sample_data(session)
+                results = insert_sample_data(session)
                 session.commit()
             except Exception as e:
                 session.rollback()