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openspec/changes/enterprise-api-plugin-procurement/proposal.md

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+# OpenSpec Change: enterprise-api-plugin-procurement
+
+- **Change ID**: enterprise-api-plugin-procurement
+- **Package**: `@suaveplan/api-plugin-procurement`
+- **Category**: api/logistics
+- **Target path**: `api/logistics/api-plugin-procurement`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/api-plugin-procurement.md`
+
+---
+
+## Summary
+
+Deliver `@suaveplan/api-plugin-procurement` on the genesis branch from scratch at enterprise quality. Procurement plugin: supplier management, purchase requisitions (PR), purchase orders (PO) with line items and approval workflow, goods-receipt note (GRN) creation on delivery, three-way matching (PO/GRN/invoice), and supplier performance tracking. Emits `procurement:grn:completed` on the bus so `@suaveplan/api-plugin-inventory` can auto-create stock movements. Routes under `/procurement`. Per-table SurrealQL. Events: `procurement:po:created`, `procurement:po:approved`, `procurement:grn:completed`, `procurement:invoice:matched`.
+
+---
+
+## Available workspace deps on genesis
+
+| Package | Role |
+|---|---|
+| `@suaveplan/api` (`workspace:^`) | `definePlugin` |
+| `@suaveplan/api-shared` (`workspace:^`) | Helpers |
+| `@suaveplan/api-plugin-auth` (`workspace:^`) | `requireAuth`, approval roles |
+| `@suaveplan/api-plugin-database` (`workspace:^`) | SurrealDB |
+| `@suaveplan/events` (`workspace:^`) | Event bus |
+| `@suaveplan/error` (`workspace:^`) | `ProcurementError` hierarchy |
+| `@suaveplan/idempotency` (`workspace:^`) | Mutation guard |
+| `@suaveplan/audit-logging` (`workspace:^`) | Approval audit |
+| `@suaveplan/rate-limiter` (`workspace:^`) | Rate limits |
+| `hono` + `@hono/zod-openapi` + `zod` | Routes |
+| `@opentelemetry/api` | OTel |
+
+---
+
+## Public API surface
+
+```ts
+function createProcurementPlugin(config?: ProcurementConfig): PluginDescriptor
+// Services: SupplierService, RequisitionService, PurchaseOrderService,
+//           GrnService, MatchingService, PerformanceService
+// Routes: /procurement/suppliers, /procurement/requisitions, /procurement/purchase-orders,
+//         /procurement/grns, /procurement/matching
+```
+
+### Error codes
+
+```ts
+type ProcurementErrorCode =
+  | "PROCUREMENT_SUPPLIER_NOT_FOUND"
+  | "PROCUREMENT_PO_NOT_FOUND"
+  | "PROCUREMENT_PO_ALREADY_APPROVED"
+  | "PROCUREMENT_GRN_NOT_FOUND"
+  | "PROCUREMENT_MATCH_DISCREPANCY"
+  | "PROCUREMENT_APPROVAL_UNAUTHORIZED"
+```
+
+---
+
+## File layout
+
+```text
+api/logistics/api-plugin-procurement/
+  package.json  tsconfig.json  vitest.config.ts
+  surql/ (supplier, requisition, purchase_order, po_line_item, grn, grn_line_item, invoice_match tables)
+  src/
+    index.ts  events.ts  types/  errors/
+    services/supplier/  services/requisition/  services/purchase-order/
+    services/grn/  services/matching/  services/performance/
+    routes/procurement/
+  tests/integration.test.ts
+```
+
+---
+
+## Impact
+
+Prerequisites: `@suaveplan/api`, `@suaveplan/api-plugin-auth`, `@suaveplan/api-plugin-database`, `@suaveplan/events`, `@suaveplan/idempotency`, `@suaveplan/audit-logging`.