fix: remove AnimalType.changed column

that was just confusing things.  WuttaFarm model should have its own
notion of when things changed, and farmOS can have its own.

src/wuttafarm/db/alembic/versions/b8cd4a8f981f_remove_animaltype_changed.py

@@ -0,0 +1,37 @@
+"""remove AnimalType.changed
+
+Revision ID: b8cd4a8f981f
+Revises: aecfd9175624
+Create Date: 2026-02-17 18:11:06.110003
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import wuttjamaican.db.util
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = "b8cd4a8f981f"
+down_revision: Union[str, None] = "aecfd9175624"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+
+    # animal_type
+    op.drop_column("animal_type", "changed")
+
+
+def downgrade() -> None:
+
+    # animal_type
+    op.add_column(
+        "animal_type",
+        sa.Column(
+            "changed", postgresql.TIMESTAMP(), autoincrement=False, nullable=True
+        ),
+    )

src/wuttafarm/db/model/animals.py

@@ -37,11 +37,7 @@ class AnimalType(model.Base):
     """
 
     __tablename__ = "animal_type"
-    __versioned__ = {
-        "exclude": [
-            "changed",
-        ],
-    }
+    __versioned__ = {}
     __wutta_hint__ = {
         "model_title": "Animal Type",
         "model_title_plural": "Animal Types",
@@ -66,14 +62,6 @@ class AnimalType(model.Base):
         """,
     )
 
-    changed = sa.Column(
-        sa.DateTime(),
-        nullable=True,
-        doc="""
-        When the animal type was last changed, according to farmOS.
-        """,
-    )
-
     farmos_uuid = sa.Column(
         model.UUID(),
         nullable=True,

src/wuttafarm/importing/farmos.py

@@ -412,7 +412,6 @@ class AnimalTypeImporter(FromFarmOS, ToWutta):
         "drupal_id",
         "name",
         "description",
-        "changed",
     ]
 
     def get_source_objects(self):
@@ -427,7 +426,6 @@ class AnimalTypeImporter(FromFarmOS, ToWutta):
             "drupal_id": animal_type["attributes"]["drupal_internal__tid"],
             "name": animal_type["attributes"]["name"],
             "description": animal_type["attributes"]["description"],
-            "changed": self.normalize_datetime(animal_type["attributes"]["changed"]),
         }
 
 

src/wuttafarm/web/views/animals.py

@@ -45,7 +45,6 @@ class AnimalTypeView(AssetTypeMasterView):
     grid_columns = [
         "name",
         "description",
-        "changed",
     ]
 
     sort_defaults = "name"
@@ -57,7 +56,6 @@ class AnimalTypeView(AssetTypeMasterView):
     form_fields = [
         "name",
         "description",
-        "changed",
         "farmos_uuid",
         "drupal_id",
     ]