feat: implement project development module, transfer management features, and industrial AVM model integration

e2e/api/listings.spec.ts

@@ -287,4 +287,46 @@ test.describe('Listings API', () => {
       expect(res.status()).toBe(401);
     });
   });
+
+  test.describe('GET /listings/:id/price-history — Price history timeline', () => {
+    test('returns empty array when listing has no price changes', async ({ request }) => {
+      const { listing } = await createListing(request, accessToken);
+
+      const res = await request.get(`listings/${listing.listingId}/price-history`);
+
+      expect(res.status()).toBe(200);
+      const body = await res.json();
+      expect(Array.isArray(body)).toBe(true);
+      expect(body).toHaveLength(0);
+    });
+
+    test('returns a price history entry after price update', async ({ request }) => {
+      const { listing } = await createListing(request, accessToken);
+
+      const updateRes = await request.patch(`listings/${listing.listingId}`, {
+        data: { priceVND: '6000000000' },
+        headers: { Authorization: `Bearer ${accessToken}` },
+      });
+      expect(updateRes.status()).toBe(200);
+
+      // Event bus is async — poll briefly for the snapshot to land.
+      const deadline = Date.now() + 5000;
+      let body: Array<{ oldPrice: string; newPrice: string; source: string; changedAt: string }> = [];
+      while (Date.now() < deadline) {
+        const res = await request.get(`listings/${listing.listingId}/price-history`);
+        expect(res.status()).toBe(200);
+        body = await res.json();
+        if (body.length > 0) break;
+        await new Promise((r) => setTimeout(r, 100));
+      }
+
+      expect(body.length).toBeGreaterThanOrEqual(1);
+      const entry = body[0]!;
+      expect(entry).toHaveProperty('oldPrice');
+      expect(entry).toHaveProperty('newPrice');
+      expect(entry).toHaveProperty('source');
+      expect(entry).toHaveProperty('changedAt');
+      expect(entry.source).toBe('manual_update');
+    });
+  });
 });