Fix streamlit command in start script

Change from 'streamlit run' to 'python -m streamlit run' for proper
execution in uv environments. This resolves the 'Failed to spawn: streamlit'
error and allows 'uv run start' to successfully launch the application.

scripts/start.py

@@ -76,7 +76,7 @@ def main():
 
     # Start the application with proper PYTHONPATH
     try:
-        subprocess.run(['uv', 'run', 'streamlit', 'run', 'app/main.py'],
+        subprocess.run(['uv', 'run', 'python', '-m', 'streamlit', 'run', 'app/main.py'],
                       cwd=project_root,
                       env=env,
                       check=True)