combine sounds and plato deals, use jinja for email

apps/vinyl/src/definitions.py

@@ -1,4 +1,5 @@
 import os
+from pathlib import Path
 
 import assets
 from dagster_polars import PolarsParquetIOManager
@@ -9,7 +10,7 @@ from utils.email import EmailService
 
 import dagster as dg
 
-APP = os.environ["APP"]
+APP = os.environ.get("APP", Path(__file__).parent.parent.name)
 
 install()