Add term column

migrations/versions/b1c2d3e4f5a6_add_terms.py

@@ -0,0 +1,35 @@
+"""add terms table and term_id to tune_by_instrument
+
+Revision ID: b1c2d3e4f5a6
+Revises: f1a2b3c4d5e6
+Create Date: 2026-06-09
+"""
+from alembic import op
+import sqlalchemy as sa
+
+revision = "b1c2d3e4f5a6"
+down_revision = "f1a2b3c4d5e6"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "terms",
+        sa.Column("id",   sa.Integer(), primary_key=True, autoincrement=True),
+        sa.Column("name", sa.String(),  nullable=False, unique=True),
+    )
+    op.add_column(
+        "tune_by_instrument",
+        sa.Column(
+            "term_id",
+            sa.Integer(),
+            sa.ForeignKey("terms.id", ondelete="SET NULL"),
+            nullable=True,
+        ),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("tune_by_instrument", "term_id")
+    op.drop_table("terms")