fix: inspect uploaded image dimensions on the server

apps/api/tests/http/image-upload-inspection.test.js

@@ -0,0 +1,41 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import sharp from 'sharp';
+import { buildApp } from '../../src/app/build-app.js';
+import { createInventoryImageService } from '../../src/modules/inventory/services/inventory-image-service.js';
+import { createSharpImageInspector } from '../../src/infrastructure/images/sharp-image-inspector.js';
+
+test('multipart uploads derive dimensions and reject malformed bytes before writes', async (context) => {
+  const saved = [];
+  let stored = 0;
+  let jobs = 0;
+  const app = buildApp({
+    authenticateAdmin: async () => ({ sellerId: 'seller-1' }),
+    inventoryImageService: createInventoryImageService({
+      imageInspector: createSharpImageInspector(),
+      imageStorage: { async put() { stored += 1; }, async delete() {} },
+      inventoryImageRepository: { async createForSeller(input, sellerId) { assert.equal(sellerId, 'seller-1'); saved.push(input); return { id: 'image-1', ...input }; } },
+      imageDerivativeJobRepository: { async create() { jobs += 1; } },
+    }),
+  });
+  context.after(() => app.close());
+  const data = await sharp({ create: { width: 7, height: 5, channels: 3, background: 'white' } }).png().toBuffer();
+  const send = (bytes, fields = '') => app.inject({
+    method: 'POST', url: '/api/v1/admin/inventory/item-1/images',
+    headers: { 'content-type': 'multipart/form-data; boundary=image-test' },
+    payload: Buffer.concat([Buffer.from(`${fields}--image-test\r\nContent-Disposition: form-data; name="file"; filename="image.png"\r\nContent-Type: image/png\r\n\r\n`), bytes, Buffer.from('\r\n--image-test--\r\n')]),
+  });
+  for (const fields of ['', '--image-test\r\nContent-Disposition: form-data; name="width"\r\n\r\n1\r\n--image-test\r\nContent-Disposition: form-data; name="height"\r\n\r\n1\r\n']) {
+    const response = await send(data, fields);
+    assert.equal(response.statusCode, 201);
+    assert.equal(response.json().data.width, 7);
+    assert.equal(response.json().data.height, 5);
+    assert.equal(response.json().data.fileSize, data.length);
+  }
+  const response = await send(data.subarray(0, 40));
+  assert.equal(response.statusCode, 400);
+  assert.equal(response.json().error.code, 'IMAGE_DECODE_INVALID');
+  assert.equal(saved.length, 2);
+  assert.equal(stored, 2);
+  assert.equal(jobs, 2);
+});