Production orders — kit, build, complete

A Production Order is the work authorization to build N units of a finished part using a specific BOM revision. The lifecycle:

1. Created — order placed, components reserved against on-hand inventory but not yet pulled.
2. Kitted — components physically pulled from stock. Inventory is decremented at this step. The order can now be released to the floor.
3. In-progress — at least one unit's traveler has been opened. The order accumulates labor and station scans as work proceeds.
4. Completed — every unit has a traveler with status: 'completed' or 'scrapped'. The finished-goods inventory is incremented for each completed unit.
5. Cancelled — order halted before kitting (no inventory impact) or after kitting (components are returned to stock with an audit log).

Creating a production order:
• Manufacturing → Production Orders → New Order.
• Pick a finished part with a BOM, set the quantity, set a target completion date.
• Save. The system reserves components and creates one traveler per unit (or per lot, depending on the part's tracking mode).

Kitting:
• Click Kit on the order. The system decrements every component's on-hand quantity by the per-unit quantity × order quantity.
• If a component is short, you'll see the shortfall before kitting commits — fix it (receive more, substitute, reduce the order) and try again.

Releasing to the floor:
• Once kitted, the order is visible on every Station screen as "ready to start". A floor operator opens a traveler, scans the station and the part, and starts work.

Closing the order:
• When every traveler is completed or scrapped, the order auto-closes and the finished-goods inventory grows by the completed count.

The Orders dashboard shows aging — orders sitting in a status for too long surface as bottlenecks (e.g. "kitted but not started for 5 days").