feat: add board group models and update related interfaces

backend/alembic/versions/12772fdcdfe9_board_groups.py

@@ -0,0 +1,54 @@
+"""board groups
+
+Revision ID: 12772fdcdfe9
+Revises: 9f0c4fb2a7b8
+Create Date: 2026-02-07 17:13:50.597099
+
+"""
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+
+
+# revision identifiers, used by Alembic.
+revision = "12772fdcdfe9"
+down_revision = "9f0c4fb2a7b8"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "board_groups",
+        sa.Column("id", sa.Uuid(), nullable=False),
+        sa.Column("name", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+        sa.Column("slug", sqlmodel.sql.sqltypes.AutoString(), nullable=False),
+        sa.Column("description", sqlmodel.sql.sqltypes.AutoString(), nullable=True),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.Column("updated_at", sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index("ix_board_groups_slug", "board_groups", ["slug"], unique=False)
+
+    op.add_column("boards", sa.Column("board_group_id", sa.Uuid(), nullable=True))
+    op.create_index("ix_boards_board_group_id", "boards", ["board_group_id"], unique=False)
+    op.create_foreign_key(
+        "fk_boards_board_group_id_board_groups",
+        "boards",
+        "board_groups",
+        ["board_group_id"],
+        ["id"],
+    )
+
+
+def downgrade() -> None:
+    op.drop_constraint(
+        "fk_boards_board_group_id_board_groups", "boards", type_="foreignkey"
+    )
+    op.drop_index("ix_boards_board_group_id", table_name="boards")
+    op.drop_column("boards", "board_group_id")
+
+    op.drop_index("ix_board_groups_slug", table_name="board_groups")
+    op.drop_table("board_groups")