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bvandeusenandClaude Opus 5.5 79655fd19f
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docs(6207): the remaining migrations state their rationale in terms of the data
Record, milestone, phase and plan citations go from every migration header;
the "end before start" fix (0043) and the suppressed-count column (0095)
state the condition they prevent rather than the incident. 0053 and 0055
pointed at design specs under docs/superpowers that are not in the repo;
those pointers are removed.

Kept: alembic's generated "Create Date:" headers (template metadata, not
rationale), 0121's ARM_BORN justification beside the constant, and 0051's
illustrative "update task 42" format example.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-21 20:49:32 -04:00

41 lines
1.6 KiB
Python

"""code_shape_uses — consumption edges, separate from conformance
Revision ID: 0084
Revises: 0083
Create Date: 2026-08-21
A ledger row carries ONE snippet_id: what shape this is (instance/variant of
a canon). But a shape can also CALL several canonical helpers — e.g. a
service function both conforming to the service-function convention and
consuming hash_token. The 2026-08 audit had to pick one; hook evidence
("pulled #N then wrote code referencing it") was stamped as instance when it
is a uses fact. This table holds the many-valued relation: shape → snippet,
with the basis and the evidence. Cascades with the shape and the snippet.
"""
import sqlalchemy as sa
from alembic import op
revision = "0084"
down_revision = "0083"
branch_labels = None
depends_on = None
def upgrade() -> None:
op.create_table(
"code_shape_uses",
sa.Column("id", sa.Integer(), primary_key=True),
sa.Column("shape_id", sa.Integer(), sa.ForeignKey("code_shapes.id", ondelete="CASCADE"), nullable=False),
sa.Column("snippet_id", sa.Integer(), sa.ForeignKey("notes.id", ondelete="CASCADE"), nullable=False),
sa.Column("basis", sa.Text(), nullable=False),
sa.Column("evidence", sa.Text(), nullable=True),
sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.text("now()")),
sa.UniqueConstraint("shape_id", "snippet_id", name="uq_code_shape_uses_shape_snippet"),
)
op.create_index("ix_code_shape_uses_snippet", "code_shape_uses", ["snippet_id"])
def downgrade() -> None:
op.drop_index("ix_code_shape_uses_snippet", table_name="code_shape_uses")
op.drop_table("code_shape_uses")