优化api接口逻辑

api/routers/frame.py

@@ -56,15 +56,14 @@ async def render_frame(
     try:
         logger.info(f"Frame render request: template={request.template}")
         
-        # Resolve template path (handles both "default.html" and "1080x1920/default.html")
+        # Resolve template path (returns absolute path with "templates/" or "data/templates/" prefix)
         template_path = resolve_template_path(request.template)
-        full_template_path = f"templates/{template_path}"
         
         # Parse template size
-        width, height = parse_template_size(full_template_path)
+        width, height = parse_template_size(template_path)
         
         # Create HTML frame generator
-        generator = HTMLFrameGenerator(full_template_path)
+        generator = HTMLFrameGenerator(template_path)
         
         # Generate frame
         frame_path = await generator.generate_frame(

api/routers/resources.py

@@ -100,8 +100,8 @@ async def list_image_workflows(pixelle_video: PixelleVideoDep):
     ```
     """
     try:
-        # Get all workflows from image service
-        all_workflows = pixelle_video.image.list_workflows()
+        # Get all workflows from media service (image generation is handled by media service)
+        all_workflows = pixelle_video.media.list_workflows()
         
         # Filter to image workflows only (filename starts with "image_")
         image_workflows = [

api/schemas/frame.py

@@ -26,7 +26,7 @@ class FrameRenderRequest(BaseModel):
     )
     title: Optional[str] = Field(None, description="Frame title (optional)")
     text: str = Field(..., description="Frame text content")
-    image: str = Field(..., description="Image path or URL")
+    image: Optional[str] = Field(None, description="Image path or URL (optional)")
     
     class Config:
         json_schema_extra = {