fixed branch_status_timestamp

Author: boddumanohar

src/models/branch.py

@@ -98,10 +98,7 @@ class Branch(AsyncAttrs, Model, table=True):
         default="UNKNOWN",
         sa_column=Column(String(length=64), nullable=False, server_default="UNKNOWN"),
     )
-    status_updated_at: datetime | None = Field(
-        default_factory=_utcnow,
-        sa_column=Column(DateTimeTZ(), nullable=True),
-    )
+    status_updated_at: datetime = Field(default_factory=_utcnow, sa_type=DateTimeTZ, nullable=False)
     jwt_secret: Annotated[str, Field(default=None, sa_column=Column(Text, nullable=True))]
     anon_key: Annotated[str, Field(default=None, sa_column=Column(Text, nullable=True))]
     service_key: Annotated[str, Field(default=None, sa_column=Column(Text, nullable=True))]

src/models/migrations/versions/f4f677e4e9b9_branch_status_timestamp.py

@@ -22,7 +22,15 @@
 
 def upgrade() -> None:
     """Upgrade schema."""
-    op.add_column('branch', sa.Column('status_updated_at', sa.DateTime(timezone=True), nullable=True))
+    op.add_column(
+        'branch',
+        sa.Column(
+            'status_updated_at',
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text('now()'),
+        ),
+    )
 
 
 def downgrade() -> None: