"""drop machine-written uses edges that cross projects

Revision ID: 0125
Revises: 0124
Create Date: 2026-10-26

A `uses` edge with basis `reference` is the proposer's by-name reading: the
shape's body names a canon's symbol. A body never calls a function defined in
another project's repository, so such an edge across projects is a common
word matched, not a call. The proposer no longer writes them, and this removes
the ones it wrote before. Edges a person or an audit judged keep their own
basis and are left alone. Rows within one project are re-read on the next
coverage refresh, which replaces their reference edges under the same rule.

Downgrade restores nothing: the removed edges were never facts.
"""
from alembic import op

revision = "0125"
down_revision = "0124"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.execute(
        "DELETE FROM code_shape_uses u USING code_shapes s, notes n "
        "WHERE u.shape_id = s.id AND u.snippet_id = n.id "
        "AND u.basis = 'reference' "
        "AND n.project_id IS NOT NULL AND n.project_id <> s.project_id"
    )


def downgrade() -> None:
    pass