Add more edit models and fix img2video mode display bug

- Added FLUX Pro/Dev Edit, Dreamina Edit, Qwen Edit to img2img models
- Fixed bug where img2video section didn't show (backend-section wrapper)
- Organized edit model dropdown with optgroups

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/content_engine/api/ui.html

@@ -828,11 +828,13 @@ select { cursor: pointer; }
             <div class="chip" onclick="selectMode(this, 'img2video')">Image to Video</div>
           </div>
 
-          <div class="section-title">Backend</div>
-          <div class="chips" id="backend-chips">
-            <div class="chip" onclick="selectBackend(this, 'local')">Local GPU</div>
-            <div class="chip selected" onclick="selectBackend(this, 'pod')">RunPod GPU</div>
-            <div class="chip" onclick="selectBackend(this, 'cloud')">Cloud API</div>
+          <div id="backend-section">
+            <div class="section-title">Backend</div>
+            <div class="chips" id="backend-chips">
+              <div class="chip" onclick="selectBackend(this, 'local')">Local GPU</div>
+              <div class="chip selected" onclick="selectBackend(this, 'pod')">RunPod GPU</div>
+              <div class="chip" onclick="selectBackend(this, 'cloud')">Cloud API</div>
+            </div>
           </div>
 
           <div id="cloud-model-select" style="display:none">
@@ -866,10 +868,22 @@ select { cursor: pointer; }
           <div id="cloud-edit-model-select" style="display:none">
             <label>Cloud Edit Model (Image-to-Image)</label>
             <select id="gen-cloud-edit-model">
-              <option value="seedream-4.5-edit">SeeDream v4.5 Edit (Best Quality - $0.04/img)</option>
-              <option value="nano-banana-edit">NanoBanana Edit ($0.038/img)</option>
-              <option value="nano-banana-pro-edit">NanoBanana Pro Edit (Best Character Consistency - $0.14/img)</option>
-              <option value="seedream-4-edit">SeeDream v4 Edit ($0.04/img)</option>
+              <optgroup label="SeeDream Edit (ByteDance)">
+                <option value="seedream-4.5-edit">SeeDream v4.5 Edit (Best Quality)</option>
+                <option value="seedream-4-edit">SeeDream v4 Edit</option>
+              </optgroup>
+              <optgroup label="NanoBanana Edit (Google)">
+                <option value="nano-banana-pro-edit">NanoBanana Pro Edit (Best Consistency)</option>
+                <option value="nano-banana-edit">NanoBanana Edit</option>
+              </optgroup>
+              <optgroup label="FLUX Edit (Black Forest Labs)">
+                <option value="flux-pro-edit">FLUX Pro Edit (Highest Quality)</option>
+                <option value="flux-dev-edit">FLUX Dev Edit</option>
+              </optgroup>
+              <optgroup label="Other">
+                <option value="dreamina-3-edit">Dreamina v3 Edit</option>
+                <option value="qwen-edit">Qwen Edit</option>
+              </optgroup>
             </select>
             <div style="font-size:11px;color:var(--text-secondary);margin-top:4px">
               Upload a reference photo and describe what you want. The model preserves identity, face, and pose while applying your prompt.
@@ -1687,8 +1701,8 @@ function selectMode(chip, mode) {
   selectedMode = mode;
   document.getElementById('img2img-section').style.display = mode === 'img2img' ? '' : 'none';
   document.getElementById('img2video-section').style.display = mode === 'img2video' ? '' : 'none';
-  // Hide regular backend chips for video mode (video has its own backend selector)
-  const backendSection = document.getElementById('backend-chips').parentElement;
+  // Hide regular backend section for video mode (video has its own backend selector)
+  const backendSection = document.getElementById('backend-section');
   if (backendSection) {
     backendSection.style.display = mode === 'img2video' ? 'none' : '';
   }

src/content_engine/services/cloud_providers/wavespeed_provider.py

@@ -82,10 +82,19 @@ VIDEO_MODEL_MAP = {
 
 # Map friendly names to WaveSpeed edit model API paths
 EDIT_MODEL_MAP = {
+    # SeeDream Edit (ByteDance)
     "seedream-4.5-edit": "bytedance/seedream-v4.5/edit",
     "seedream-4-edit": "bytedance/seedream-v4/edit",
+    # NanoBanana Edit (Google)
     "nano-banana-edit": "google/nano-banana/edit",
     "nano-banana-pro-edit": "google/nano-banana-pro/edit",
+    # FLUX Edit (Black Forest Labs)
+    "flux-dev-edit": "black-forest-labs/flux-dev/edit",
+    "flux-pro-edit": "black-forest-labs/flux-pro/edit",
+    # Dreamina Edit (ByteDance)
+    "dreamina-3-edit": "bytedance/dreamina-v3/edit",
+    # Qwen Edit (WaveSpeed)
+    "qwen-edit": "wavespeedai/qwen-image/edit",
     # Default edit model
     "default": "bytedance/seedream-v4.5/edit",
 }