image: Add Seedream 4.0 model.

* 2025-09-24.

https://seed.bytedance.com/en/seedream4_0

example.js

@@ -35,6 +35,22 @@ const examples = [
         modelLabel: 'NANO BANANA',
         sizeLabel: '1024×1024',
         note: 'Sometimes the resolution is forced to be square'
+    },
+    {
+        prompt: 'A man sitting in a modern cafe reading a book, warm afternoon sunlight streaming through large windows, realistic atmosphere',
+        model: 'seedream',
+        size: '1536x1024',
+        modelLabel: 'SEEDREAM 4.0',
+        sizeLabel: '1536×1024',
+        note: 'New model! Added on 2025-09-24.'
+    },
+    {
+        prompt: 'A woman in a wedding dress holding hands with her husband in a suit, both smiling happily, outdoor ceremony with natural lighting, realistic style',
+        model: 'seedream',
+        size: '1024x1024',
+        modelLabel: 'SEEDREAM 4.0',
+        sizeLabel: '1024×1024',
+        note: 'New model! Added on 2025-09-24.'
     }
 ];
 

model.js

@@ -7,7 +7,8 @@ const models = [
     { value: 'flux', label: 'Flux' },
     { value: 'kontext', label: 'Kontext' },
     { value: 'turbo', label: 'Turbo' },
-    { value: 'nanobanana', label: 'Nano Banana' }
+    { value: 'nanobanana', label: 'Nano Banana' },
+    { value: 'seedream', label: 'Seedream 4.0' }
 ];
 
 if (typeof module !== 'undefined' && module.exports) {