many fixes resulting from latest refactoring

src/services/aiApiClient.test.ts

@@ -91,7 +91,8 @@ describe('AI API Client (Network Mocking with MSW)', () => {
 
       expect(req.endpoint).toBe('upload-and-process');
       expect(req.method).toBe('POST');
-      expect(req.body).toBeInstanceOf(FormData);
+      // FIX: Use a duck-typing check for FormData to avoid environment-specific instance issues.
+      expect(typeof (req.body as FormData).get).toBe('function');
 
       const flyerFile = (req.body as FormData).get('flyerFile') as File;
       const checksumValue = (req.body as FormData).get('checksum');
@@ -125,7 +126,7 @@ describe('AI API Client (Network Mocking with MSW)', () => {
       
       expect(req.endpoint).toBe('check-flyer');
       expect(req.method).toBe('POST');
-      expect(req.body).toBeInstanceOf(FormData);
+      expect(typeof (req.body as FormData).get).toBe('function');
       const imageFile = (req.body as FormData).get('image') as File;
       expect(imageFile.name).toBe('flyer.jpg');
     });
@@ -140,7 +141,7 @@ describe('AI API Client (Network Mocking with MSW)', () => {
       const req = requestSpy.mock.calls[0][0];
 
       expect(req.endpoint).toBe('extract-address');
-      expect(req.body).toBeInstanceOf(FormData);
+      expect(typeof (req.body as FormData).get).toBe('function');
       const imageFile = (req.body as FormData).get('image') as File;
       expect(imageFile.name).toBe('flyer.jpg');
     });
@@ -155,7 +156,7 @@ describe('AI API Client (Network Mocking with MSW)', () => {
       const req = requestSpy.mock.calls[0][0];
 
       expect(req.endpoint).toBe('extract-logo');
-      expect(req.body).toBeInstanceOf(FormData);
+      expect(typeof (req.body as FormData).get).toBe('function');
       const imageFile = (req.body as FormData).get('images') as File;
       expect(imageFile.name).toBe('logo.jpg');
     });
@@ -254,7 +255,7 @@ describe('AI API Client (Network Mocking with MSW)', () => {
       const req = requestSpy.mock.calls[0][0];
 
       expect(req.endpoint).toBe('rescan-area');
-      expect(req.body).toBeInstanceOf(FormData);
+      expect(typeof (req.body as FormData).get).toBe('function');
 
       const imageFile = (req.body as FormData).get('image') as File;
       const cropAreaValue = (req.body as FormData).get('cropArea');