feat(vision): il grafo vive sul task, la quota nomina la sua uscita

src/backend/migrations/versions/011_vision_graph.py

@@ -0,0 +1,55 @@
+"""the vision graph lives on the task, and the quote names its output
+
+`xf_compare` was a typo for `dxf_compare`. No row uses either value yet, so
+renaming costs one statement here; from the first saved task onwards it would
+be a data migration and the typo would already be in the public API.
+
+Revision ID: 011_vision_graph
+Revises: 010_meas_authorisation
+Create Date: 2026-08-16
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+revision: str = '011_vision_graph'
+down_revision: Union[str, None] = '010_meas_authorisation'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+OLD_TYPES = ('note', 'measure', 'drawing', 'xf_compare', 'camera_measure')
+NEW_TYPES = ('note', 'measure', 'drawing', 'dxf_compare', 'camera_measure')
+
+
+def upgrade() -> None:
+    with op.batch_alter_table('recipe_tasks') as batch:
+        batch.add_column(sa.Column('vision_json', sa.JSON(), nullable=True))
+        batch.alter_column(
+            'task_type',
+            existing_type=sa.Enum(*OLD_TYPES, name='task_type_enum'),
+            type_=sa.Enum(*NEW_TYPES, name='task_type_enum'),
+            existing_nullable=False,
+            existing_server_default='note',
+        )
+
+    with op.batch_alter_table('recipe_subtasks') as batch:
+        batch.add_column(
+            sa.Column('vision_output', sa.String(length=120), nullable=True)
+        )
+
+
+def downgrade() -> None:
+    with op.batch_alter_table('recipe_subtasks') as batch:
+        batch.drop_column('vision_output')
+
+    with op.batch_alter_table('recipe_tasks') as batch:
+        batch.alter_column(
+            'task_type',
+            existing_type=sa.Enum(*NEW_TYPES, name='task_type_enum'),
+            type_=sa.Enum(*OLD_TYPES, name='task_type_enum'),
+            existing_nullable=False,
+            existing_server_default='note',
+        )
+        batch.drop_column('vision_json')