fix: remove unique constraint for AnimalType.name

since it is not guaranteed unique in farmOS; can't do it here either
or else import may fail

src/wuttafarm/db/alembic/versions/45c7718d2ed2_remove_unique_for_animal_type_name.py

@@ -0,0 +1,37 @@
+"""remove unique for animal_type.name
+
+Revision ID: 45c7718d2ed2
+Revises: 5b6c87d8cddf
+Create Date: 2026-02-27 16:53:59.310342
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import wuttjamaican.db.util
+
+
+# revision identifiers, used by Alembic.
+revision: str = "45c7718d2ed2"
+down_revision: Union[str, None] = "5b6c87d8cddf"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+
+    # animal_type
+    op.drop_constraint(op.f("uq_animal_type_name"), "animal_type", type_="unique")
+
+
+def downgrade() -> None:
+
+    # animal_type
+    op.create_unique_constraint(
+        op.f("uq_animal_type_name"),
+        "animal_type",
+        ["name"],
+        postgresql_nulls_not_distinct=False,
+    )

src/wuttafarm/db/model/asset_animal.py

@@ -48,7 +48,6 @@ class AnimalType(model.Base):
     name = sa.Column(
         sa.String(length=100),
         nullable=False,
-        unique=True,
         doc="""
         Name of the animal type.
         """,