feat: add pricing observation API

Add seller-owned pricing observation persistence, median market valuation calculation, admin routes, contracts, validation, migration, and focused tests.

apps/api/tests/application/pricing-service.test.js

@@ -0,0 +1,26 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import { createPricingService } from '../../src/modules/pricing/services/pricing-service.js';
+
+test('records an owned pricing observation and calculates a valuation', async () => {
+  const service = createPricingService({
+    pricingRepository: {
+      async addObservationForSeller({ observation, sellerId }) {
+        assert.equal(sellerId, 'seller-1');
+        return { status: 'CREATED', observation };
+      },
+      async calculateForSeller() {
+        return { status: 'CALCULATED', valuation: { valueMinor: 2500 }, observations: [] };
+      },
+    },
+  });
+
+  const observation = await service.addObservation({
+    sellerId: 'seller-1', productId: 'product-1', inventoryItemId: 'inventory-1',
+    providerId: 'manual', priceMinor: 2500, sourceIdentifier: 'source-1', conditionId: 'condition-1',
+  });
+  assert.equal(observation.priceMinor, 2500);
+  const valuation = await service.calculate({ sellerId: 'seller-1', inventoryItemId: 'inventory-1' });
+  assert.equal(valuation.valuation.valueMinor, 2500);
+});

apps/api/tests/http/pricing-routes.test.js

@@ -0,0 +1,28 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import { buildApp } from '../../src/app/build-app.js';
+
+test('accepts a protected pricing observation and valuation request', async (testContext) => {
+  let csrfChecks = 0;
+  const app = buildApp({
+    authenticateAdmin: async () => ({ sellerId: 'seller-1' }),
+    authorizeUnsafeRequest: async () => { csrfChecks += 1; },
+    pricingService: {
+      async addObservation(input) { return { id: 'observation-1', ...input }; },
+      async calculate() { return { valuation: { id: 'valuation-1', inventoryItemId: 'inventory-1', valueMinor: 2500, currency: 'USD', strategy: 'MEDIAN', confidence: 'LOW', sourceCount: 1 }, observations: [] }; },
+    },
+  });
+  testContext.after(() => app.close());
+
+  const observationResponse = await app.inject({
+    method: 'POST', url: '/api/v1/admin/pricing/observations', headers: { 'x-csrf-token': 'csrf' },
+    payload: { productId: 'd2f67d74-9647-48d5-b3a4-74d3b16ea9f8', inventoryItemId: '21eb218b-7a95-4f80-a9e3-e306f7ca1f2e', providerId: 'manual', priceMinor: 2500, sourceIdentifier: 'source-1', conditionId: 'ab8150c7-96c1-4b55-8d69-7d0b77d48958' },
+  });
+  const valuationResponse = await app.inject({ method: 'POST', url: '/api/v1/admin/inventory/21eb218b-7a95-4f80-a9e3-e306f7ca1f2e/valuation' });
+
+  assert.equal(observationResponse.statusCode, 201);
+  assert.equal(valuationResponse.statusCode, 200);
+  assert.equal(valuationResponse.json().data.valueMinor, 2500);
+  assert.equal(csrfChecks, 1);
+});