Deployment Script, Postgres migration, UX improvements

backend/app/services/mix_calculator_filenames.py

@@ -0,0 +1,10 @@
+from __future__ import annotations
+
+import re
+
+from app.models.mix_calculator import MixCalculatorSession
+
+
+def mix_calculator_pdf_filename(session_record: MixCalculatorSession) -> str:
+    raw = f"{session_record.session_number}_{session_record.client_name}_{session_record.product_name}.pdf"
+    return re.sub(r"[^\w.\-]+", "_", raw)