"""
economy_import — the import steps behind `reach ledger import`.

Split out of the former single-file importer (T-1067). `ledger/service.py`
orchestrates the single-transaction import; the steps live here:

  paths.py           source-file path constants (re-exports stamped paths
                     from tooling/generator_sources.py)
  errors.py          ImportAborted control-flow exception
  db.py              connection + FK-safe table-clear helpers
  migration.py       MIGRATION_SQL / COLUMN_MIGRATIONS schema migration
  economy.py         gate links, commodities, chains, currency zones,
                     gate energy, system_fiscal
  corporations.py    wiki corp parsing, D-182 sync, corp_presence
  brands.py          generate_brands shell-out + D-189 brand layer
  bodies.py          body_radius_km / axial_tilt_deg backfills
  atlas.py           atlas index schema + city-name pool (D-223, D-207)
  specialization.py  D-237 authored specialization layer
  traits.py          D-232 architecture-flavor trait templates + hero bias
  validators.py      structural + D-175 coverage validation
  stamp.py           meta-table generator stamp (#855, #856)

Every module here is part of the import_economics meta-stamp source set —
tooling/generator_sources.py globs this directory, so adding a module
automatically extends staleness detection.

The sys.path bootstrap that used to sit here is gone (T-1289). It existed only
because `tooling/economy-db/` was hyphenated and so not importable; inside the
package, `tooling.generator_sources` and the ledger's `schema_version` resolve
by ordinary import.
"""