"""Per-binding ref — the branch a project's ledger follows

Revision ID: 0082
Revises: 0081
Create Date: 2026-08-21

Without a ref, a repo binding implies the repo's default branch, so the shape
ledger only sees work after a merge — while a project may do its work on a
dev branch. `ref` names the branch the coverage refresh reads; NULL means the
forge's default branch.
"""
import sqlalchemy as sa
from alembic import op

revision = "0082"
down_revision = "0081"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column("repo_bindings", sa.Column("ref", sa.Text(), nullable=True))


def downgrade() -> None:
    op.drop_column("repo_bindings", "ref")