edited sensors to account for a fresh start, edited README

user_code/assets/config.py

@@ -1,4 +1,5 @@
 import pandas as pd
+from pathlib import Path
 from dagster import (
     asset,
 )
@@ -11,6 +12,10 @@ from dagster_duckdb import DuckDBResource
 def agency_list(duckdb: DuckDBResource) -> None:
     """Load agency list from CSV into DuckDB."""
 
+    # Ensure the database directory exists
+    db_path = Path(duckdb.database)
+    db_path.parent.mkdir(parents=True, exist_ok=True)
+
     # Read the CSV (path is relative to container working directory)
     df = pd.read_csv('config/agency_list.csv')
 
@@ -20,4 +25,3 @@ def agency_list(duckdb: DuckDBResource) -> None:
             CREATE OR REPLACE TABLE agency_list AS
             SELECT * FROM df
         """)
-