Step 1 complete!

src/transcription/models.py

@@ -6,6 +6,7 @@ Three models capture the MVP lifecycle:
 
 from datetime import datetime, timezone
 from enum import StrEnum
+from typing import Optional
 from uuid import UUID, uuid4
 
 from sqlmodel import Field, Relationship, SQLModel
@@ -47,7 +48,7 @@ class Job(SQLModel, table=True):
 
     # --- relationships ---
     document: Document = Relationship(back_populates="jobs")
-    transcript: "Transcript | None" = Relationship(back_populates="job")
+    transcript: Optional["Transcript"] = Relationship(back_populates="job")
 
 
 class Transcript(SQLModel, table=True):