Purchase orders & vendors

Vendors, POs, approvals, and receiving in one loop.

Vendor directory with preferred-supplier links, a full PO lifecycle from draft to received, an approval workflow with audit trail, and auto-PO drafts when stock dips below minimum on a part that has a preferred vendor on file.

• Auto-numbered PO-XXXXX with status state machine
• Approval workflow with rejection notes and audit trail
• Receiving updates inventory atomically
• Auto-PO drafts when low-stock meets preferred vendor