完善fastapi接口

api/schemas/frame.py

@@ -0,0 +1,37 @@
+"""
+Frame/Template rendering API schemas
+"""
+
+from typing import Optional
+from pydantic import BaseModel, Field
+
+
+class FrameRenderRequest(BaseModel):
+    """Frame rendering request"""
+    template: str = Field(
+        ..., 
+        description="Template key (e.g., '1080x1920/default.html'). Can also be just filename (e.g., 'default.html') to use default size."
+    )
+    title: Optional[str] = Field(None, description="Frame title (optional)")
+    text: str = Field(..., description="Frame text content")
+    image: str = Field(..., description="Image path or URL")
+    
+    class Config:
+        json_schema_extra = {
+            "example": {
+                "template": "1080x1920/default.html",
+                "title": "Sample Title",
+                "text": "This is a sample text for the frame.",
+                "image": "resources/example.png"
+            }
+        }
+
+
+class FrameRenderResponse(BaseModel):
+    """Frame rendering response"""
+    success: bool = True
+    message: str = "Success"
+    frame_path: str = Field(..., description="Path to generated frame image")
+    width: int = Field(..., description="Frame width in pixels")
+    height: int = Field(..., description="Frame height in pixels")
+