PhoenixKit module: manufacturing.
Provides a dashboard plus a Machines reference book — machines and
their (many-to-many) machine types, with full CRUD, activity logging and
multilang type labels. Production orders and warehouse integration are
planned in later milestones (see dev_docs/DEVELOPMENT_PLAN.md).
The module ships its own database tables via migration_module/0
(PhoenixKitManufacturing.Migrations.Machines); the host applies them by
running mix phoenix_kit.update.