diff --git a/services/platform-service/src/modules/feedback/feedback.test.ts b/services/platform-service/src/modules/feedback/feedback.test.ts
index 67107ecd..c8c5ea0a 100644
--- a/services/platform-service/src/modules/feedback/feedback.test.ts
+++ b/services/platform-service/src/modules/feedback/feedback.test.ts
@@ -103,3 +103,70 @@ describe('QueryFeedbackSchema', () => {
     expect(() => QueryFeedbackSchema.parse({ limit: '101' })).toThrow();
   });
 });
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Screenshot Support Tests (Phase 1.5)
+// ─────────────────────────────────────────────────────────────────────────────
+
+describe('CreateFeedbackSchema with screenshot', () => {
+  it('accepts feedback with screenshot metadata', () => {
+    const result = CreateFeedbackSchema.parse({
+      type: 'bug',
+      title: 'Crash with screenshot',
+      body: 'App crashes when I tap this button',
+      screenshotBlobPath: 'feedback/test_product/fb_123/screenshot_abc.png',
+      screenshotContentType: 'image/png',
+      screenshotSizeBytes: 1024000,
+      deviceContext: {
+        osVersion: 'iOS 17.4',
+        appVersion: '2.3.1',
+        deviceModel: 'iPhone15,2',
+        screenResolution: '393x852',
+        locale: 'en-US',
+      },
+    });
+    expect(result.screenshotBlobPath).toBe('feedback/test_product/fb_123/screenshot_abc.png');
+    expect(result.screenshotContentType).toBe('image/png');
+    expect(result.screenshotSizeBytes).toBe(1024000);
+    expect(result.deviceContext?.osVersion).toBe('iOS 17.4');
+  });
+
+  it('accepts feedback without screenshot (backward compatible)', () => {
+    const result = CreateFeedbackSchema.parse({
+      type: 'feature',
+      title: 'Add dark mode',
+    });
+    expect(result.screenshotBlobPath).toBeUndefined();
+    expect(result.deviceContext).toBeUndefined();
+  });
+
+  it('rejects invalid screenshot content type', () => {
+    expect(() =>
+      CreateFeedbackSchema.parse({
+        type: 'bug',
+        title: 'test',
+        screenshotContentType: 'image/gif', // not allowed
+      })
+    ).toThrow();
+  });
+
+  it('rejects screenshot over 10MB', () => {
+    expect(() =>
+      CreateFeedbackSchema.parse({
+        type: 'bug',
+        title: 'test',
+        screenshotSizeBytes: 11 * 1024 * 1024, // 11MB
+      })
+    ).toThrow();
+  });
+
+  it('accepts webp screenshots', () => {
+    const result = CreateFeedbackSchema.parse({
+      type: 'bug',
+      title: 'test',
+      screenshotContentType: 'image/webp',
+      screenshotSizeBytes: 500000,
+    });
+    expect(result.screenshotContentType).toBe('image/webp');
+  });
+});