修复: 代码审查4个必改项+4个建议改进

- 工单编号改为业务格式 TK-yyMMdd-NNN
- 类型断言加 comma-ok 防 panic
- priority 用指针区分未传/P0
- json.Marshal 错误处理
- 提取 ParseID 公共函数消除重复
- HTTP client 包级别复用
- LIKE 查询特殊字符转义
- interface{} → any
- auth 中间件用 dto.Fail 统一响应

backend/internal/service/analysis_service.go

@@ -13,6 +13,8 @@ import (
 	"gorm.io/gorm"
 )
 
+var httpClient = &http.Client{Timeout: 30 * time.Second}
+
 type GLMRequest struct {
 	Model    string    `json:"model"`
 	Messages []Message `json:"messages"`
@@ -32,10 +34,10 @@ type Choice struct {
 }
 
 type AnalysisResult struct {
-	Category    string `json:"category"`
+	Category    string      `json:"category"`
 	Priority    json.Number `json:"priority"`
-	Summary     string `json:"summary"`
-	SuggestRole string `json:"suggest_role"`
+	Summary     string      `json:"summary"`
+	SuggestRole string      `json:"suggest_role"`
 }
 
 func AnalyzeTicket(db *gorm.DB, ticketid int, apikey, baseURL, glmModel, title, content, contactname, contactphone string) (*model.TicketAiAnalysis, error) {
@@ -62,7 +64,10 @@ func AnalyzeTicket(db *gorm.DB, ticketid int, apikey, baseURL, glmModel, title,
 		},
 	}
 
-	jsonData, _ := json.Marshal(reqBody)
+	jsonData, err := json.Marshal(reqBody)
+	if err != nil {
+		return nil, fmt.Errorf("构建请求失败: %w", err)
+	}
 
 	httpReq, err := http.NewRequest("POST", baseURL+"/chat/completions", bytes.NewBuffer(jsonData))
 	if err != nil {
@@ -72,8 +77,7 @@ func AnalyzeTicket(db *gorm.DB, ticketid int, apikey, baseURL, glmModel, title,
 	httpReq.Header.Set("Content-Type", "application/json")
 	httpReq.Header.Set("Authorization", "Bearer "+apikey)
 
-	client := &http.Client{Timeout: 30 * time.Second}
-	resp, err := client.Do(httpReq)
+	resp, err := httpClient.Do(httpReq)
 	if err != nil {
 		return nil, err
 	}
@@ -90,7 +94,6 @@ func AnalyzeTicket(db *gorm.DB, ticketid int, apikey, baseURL, glmModel, title,
 		return nil, fmt.Errorf("AI返回为空")
 	}
 
-	// Clean markdown code block wrapping from AI response
 	aiContent := strings.TrimSpace(glmResp.Choices[0].Message.Content)
 	aiContent = strings.TrimPrefix(aiContent, "```json")
 	aiContent = strings.TrimPrefix(aiContent, "```")
@@ -102,7 +105,7 @@ func AnalyzeTicket(db *gorm.DB, ticketid int, apikey, baseURL, glmModel, title,
 		return nil, fmt.Errorf("解析AI响应失败: %v, 原始内容: %s", err, aiContent)
 	}
 
-	priority := int16(2) // default P2
+	priority := int16(2)
 	if n, err := result.Priority.Int64(); err == nil {
 		priority = int16(n)
 	}
@@ -142,9 +145,6 @@ func ConfirmAnalysis(db *gorm.DB, analysisid int, category string, priority int1
 	if category != "" {
 		updates["category"] = category
 	}
-	if priority >= 0 {
-		updates["priority"] = priority
-	}
 	if summary != "" {
 		updates["summary"] = summary
 	}