fix: remove unique constraint for LandAsset.land_type_uuid

not sure why that was in there..assuming a mistake

src/wuttafarm/db/alembic/versions/5f474125a80e_remove_unwanted_unique_constraint.py

@@ -0,0 +1,39 @@
+"""remove unwanted unique constraint
+
+Revision ID: 5f474125a80e
+Revises: 0771322957bd
+Create Date: 2026-03-04 12:03:16.034291
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import wuttjamaican.db.util
+
+
+# revision identifiers, used by Alembic.
+revision: str = "5f474125a80e"
+down_revision: Union[str, None] = "0771322957bd"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+
+    # asset_land
+    op.drop_constraint(
+        op.f("uq_asset_land_land_type_uuid"), "asset_land", type_="unique"
+    )
+
+
+def downgrade() -> None:
+
+    # asset_land
+    op.create_unique_constraint(
+        op.f("uq_asset_land_land_type_uuid"),
+        "asset_land",
+        ["land_type_uuid"],
+        postgresql_nulls_not_distinct=False,
+    )

src/wuttafarm/db/model/asset_land.py

@@ -91,7 +91,7 @@ class LandAsset(AssetMixin, model.Base):
         "farmos_asset_type": "land",
     }
 
-    land_type_uuid = model.uuid_fk_column("land_type.uuid", nullable=False, unique=True)
+    land_type_uuid = model.uuid_fk_column("land_type.uuid", nullable=False)
     land_type = orm.relationship(LandType, back_populates="land_assets")