fix: 修复 cargo check 编译错误

修复内容:
- 添加缺失的 OutfitImageGenerationResponse 导入
- 为 ErrorCategory 和 ErrorSeverity 添加 Eq 和 Hash trait
- 为 SimpleError 添加 Debug trait
- 修复 ModelRepository::new 返回类型问题
- 移除未使用的变量 mut 修饰符
- 移除未使用的导入

 编译状态:
- cargo check 现在成功通过
- 只剩下一些无害的警告信息
- 所有核心功能编译正常

apps/desktop/src-tauri/src/business/services/error_handling_service.rs

@@ -6,7 +6,7 @@ use tracing::{error, warn, info};
 use chrono::{DateTime, Utc};
 
 /// 错误严重程度
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
 pub enum ErrorSeverity {
     Low,      // 轻微错误，不影响主要功能
     Medium,   // 中等错误，影响部分功能
@@ -15,7 +15,7 @@ pub enum ErrorSeverity {
 }
 
 /// 错误类别
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
 pub enum ErrorCategory {
     Network,        // 网络相关错误
     Database,       // 数据库相关错误
@@ -159,7 +159,7 @@ impl ErrorHandlingService {
         let error_message = error.to_string();
         let error_id = self.classify_error(&error_message);
         
-        let mut user_error = if let Some(template) = self.error_templates.get(&error_id) {
+        let user_error = if let Some(template) = self.error_templates.get(&error_id) {
             let mut error = template.clone();
             error.timestamp = Utc::now();
             if let Some(ctx) = context {

apps/desktop/src-tauri/src/business/services/outfit_photo_generation_service.rs

@@ -32,7 +32,7 @@ impl OutfitPhotoGenerationService {
         cloud_upload_service: Arc<CloudUploadService>,
     ) -> Result<Self> {
         let repository = OutfitPhotoGenerationRepository::new(database.clone())?;
-        let model_repository = ModelRepository::new(database)?;
+        let model_repository = ModelRepository::new(database);
 
         Ok(Self {
             repository,

apps/desktop/src-tauri/src/business/services/workflow_management_service.rs

@@ -4,7 +4,7 @@ use serde_json::Value;
 use std::collections::HashMap;
 use std::path::{Path, PathBuf};
 use tokio::fs;
-use tracing::{info, warn, error};
+use tracing::{info, warn};
 
 /// 工作流元数据
 #[derive(Debug, Clone, Serialize, Deserialize)]

apps/desktop/src-tauri/src/presentation/commands/error_handling_commands.rs

@@ -127,6 +127,7 @@ pub async fn handle_and_record_error(
     let service = ErrorHandlingService::new();
 
     // 创建一个简单的错误实现
+    #[derive(Debug)]
     struct SimpleError(String);
     impl std::fmt::Display for SimpleError {
         fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
@@ -156,6 +157,7 @@ pub async fn get_error_suggestions(
     let service = ErrorHandlingService::new();
 
     // 创建一个简单的错误实现
+    #[derive(Debug)]
     struct SimpleError(String);
     impl std::fmt::Display for SimpleError {
         fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
@@ -185,6 +187,7 @@ pub async fn check_error_retry_capability(
     let service = ErrorHandlingService::new();
 
     // 创建一个简单的错误实现
+    #[derive(Debug)]
     struct SimpleError(String);
     impl std::fmt::Display for SimpleError {
         fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
@@ -221,6 +224,7 @@ pub async fn get_error_help_info(
     let service = ErrorHandlingService::new();
 
     // 创建一个简单的错误实现
+    #[derive(Debug)]
     struct SimpleError(String);
     impl std::fmt::Display for SimpleError {
         fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {

apps/desktop/src-tauri/src/presentation/commands/outfit_image_commands.rs

@@ -1,7 +1,7 @@
 use tauri::State;
 use crate::app_state::AppState;
 use crate::data::models::outfit_image::{
-    OutfitImageRecord, OutfitImageGenerationRequest,
+    OutfitImageRecord, OutfitImageGenerationRequest, OutfitImageGenerationResponse,
     OutfitImageStats, ProductImage
 };
 use crate::data::repositories::outfit_image_repository::OutfitImageRepository;