update:1.开放系统内置提示词，支持用户自定义模板

backend/app/schemas/prompt_template.py

@@ -0,0 +1,68 @@
+"""提示词模板相关的Pydantic模型"""
+from pydantic import BaseModel, Field, ConfigDict
+from typing import Optional, List
+from datetime import datetime
+
+
+class PromptTemplateBase(BaseModel):
+    """提示词模板基础模型"""
+    template_key: str = Field(..., description="模板键名")
+    template_name: str = Field(..., description="模板显示名称")
+    template_content: str = Field(..., description="模板内容")
+    description: Optional[str] = Field(None, description="模板描述")
+    category: Optional[str] = Field(None, description="模板分类")
+    parameters: Optional[str] = Field(None, description="模板参数定义(JSON)")
+    is_active: bool = Field(True, description="是否启用")
+
+
+class PromptTemplateCreate(PromptTemplateBase):
+    """创建提示词模板请求模型"""
+    pass
+
+
+class PromptTemplateUpdate(BaseModel):
+    """更新提示词模板请求模型"""
+    template_name: Optional[str] = Field(None, description="模板显示名称")
+    template_content: Optional[str] = Field(None, description="模板内容")
+    description: Optional[str] = Field(None, description="模板描述")
+    category: Optional[str] = Field(None, description="模板分类")
+    parameters: Optional[str] = Field(None, description="模板参数定义(JSON)")
+    is_active: Optional[bool] = Field(None, description="是否启用")
+
+
+class PromptTemplateResponse(PromptTemplateBase):
+    """提示词模板响应模型"""
+    model_config = ConfigDict(from_attributes=True)
+    
+    id: str
+    user_id: str
+    is_system_default: bool
+    created_at: datetime
+    updated_at: datetime
+
+
+class PromptTemplateListResponse(BaseModel):
+    """提示词模板列表响应"""
+    templates: List[PromptTemplateResponse]
+    total: int
+    categories: List[str]
+
+
+class PromptTemplateCategoryResponse(BaseModel):
+    """提示词模板分类响应"""
+    category: str
+    count: int
+    templates: List[PromptTemplateResponse]
+
+
+class PromptTemplateExport(BaseModel):
+    """提示词模板导出模型"""
+    templates: List[PromptTemplateBase]
+    export_time: datetime
+    version: str = "1.0"
+
+
+class PromptTemplatePreviewRequest(BaseModel):
+    """提示词模板预览请求"""
+    template_content: str = Field(..., description="模板内容")
+    parameters: dict = Field(..., description="参数字典")