"""
Canonical systems.db schema version — shared by all generators (#888).

Bump SCHEMA_VERSION manually on any backwards-incompatible schema change
(column removed, type changed, FK constraint added, table dropped).
Additive changes (new nullable columns, new tables, new indexes) do not
require a bump.

Lives in `ledger` because the importer is where the version is DEFINED;
`reach check systems-db-stamp` only reads it back out of the meta table
(tooling/DOMAINS.md). Imported by economy_import/stamp.py.
"""

SCHEMA_VERSION = "1.0.0"