fix: wan2.6→wan2.7 作为推荐默认模型

app/cost_estimator.py

@@ -21,13 +21,13 @@ logger = logging.getLogger("pipeline.cost_estimator")
 
 # Model pricing configuration — llmage v1 video models
 MODEL_PRICING = {
-    "wan2.6-t2v": {
-        "name": "通义万象 WAN 2.6 (T2V)",
+    "wan2.7-t2v": {
+        "name": "通义万象 WAN 2.7 (T2V) ⭐推荐",
         "price_per_second": 0.05,
         "quality_score": 8.5,
         "generation_speed": "medium",
-        "description": "高质量文生视频，支持5-15秒",
-        "features": ["T2V"],
+        "description": "最新版文生视频，质量更高",
+        "features": ["T2V", "I2V", "Ref2V"],
         "recommended_for": ["quality", "professional"],
     },
     "happyhorse-1.0-t2v": {

app/ktv_adapter.py

@@ -604,7 +604,7 @@ async def handle_scene_video_generating(tenant_id, task_id, step_name, input_dat
     """通过 /v1/video/generations 生成场景视频，模型由客户选择。"""
     work_dir = _task_dir(task_id)
     storyboard = None
-    selected_model = "wan2.6-t2v"  # 默认
+    selected_model = "wan2.7-t2v"  # 默认
     for dep_output in input_data.values():
         if isinstance(dep_output, dict):
             if dep_output.get("storyboard"): storyboard = dep_output["storyboard"]