- New /audit page with completeness scoring engine
- Weighted scoring by sourcing type (purchased vs manufactured)
- Batch DB queries for items+properties, BOM existence, project codes
- API endpoints: GET /api/audit/completeness, GET /api/audit/completeness/{pn}
- Audit UI: tier summary bar, filterable table, split-panel inline editing
- Create item form now shows category-specific property fields on category select
- Properties collected and submitted with item creation
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