Update gitignore

run_dash.py

@@ -1,4 +1,12 @@
 """Entry point for the Dash application."""
+import sys
+from pathlib import Path
+
+# Ensure src/ is on sys.path so that core/, data_processing/, etc. are importable
+_src_dir = str(Path(__file__).resolve().parent / "src")
+if _src_dir not in sys.path:
+    sys.path.insert(0, _src_dir)
+
 from dash_app.app import app
 
 if __name__ == "__main__":