Remove trailing whitespace in scripts

src/scripts/init_db.py

@@ -38,7 +38,7 @@ def main():
     """
     Main entry point for the database initialization script.
 
-    This function creates the configuration, ensures the async engine is 
+    This function creates the configuration, ensures the async engine is
     initialized, and runs the async initialization function within an
     event loop.
 

src/scripts/test_db.py

@@ -2,7 +2,7 @@
 test_db.py
 
 This script verifies the database connection for the Expressive TTS Arena project.
-It attempts to connect to the PostgreSQL database using async SQLAlchemy and executes 
+It attempts to connect to the PostgreSQL database using async SQLAlchemy and executes
 a simple query to confirm connectivity.
 
 Functionality: