feat(report): support historical rebuild dates

scripts/generate_daily_report.go

@@ -85,7 +85,10 @@ func run() error {
 	}
 	defer db.Close()
 
-	date := time.Now().Format("2006-01-02")
+	date, err := resolveReportDate(time.Now(), os.Args[1:], os.Getenv("REPORT_DATE"))
+	if err != nil {
+		return err
+	}
 
 	// 1. 获取报告数据(使用新schema)
 	report, err := generateReportDataV3(db, date)
@@ -133,6 +136,35 @@ func run() error {
 	return nil
 }
 
+func resolveReportDate(now time.Time, args []string, envDate string) (string, error) {
+	date := strings.TrimSpace(envDate)
+
+	for i := 0; i < len(args); i++ {
+		switch {
+		case args[i] == "-date" || args[i] == "--date":
+			if i+1 >= len(args) {
+				return "", fmt.Errorf("缺少 -date 参数值，期望格式 YYYY-MM-DD")
+			}
+			date = strings.TrimSpace(args[i+1])
+			i++
+		case strings.HasPrefix(args[i], "-date="):
+			date = strings.TrimSpace(strings.TrimPrefix(args[i], "-date="))
+		case strings.HasPrefix(args[i], "--date="):
+			date = strings.TrimSpace(strings.TrimPrefix(args[i], "--date="))
+		}
+	}
+
+	if date == "" {
+		return now.Format("2006-01-02"), nil
+	}
+
+	parsed, err := time.Parse("2006-01-02", date)
+	if err != nil {
+		return "", fmt.Errorf("无效报告日期 %q，期望格式 YYYY-MM-DD", date)
+	}
+	return parsed.Format("2006-01-02"), nil
+}
+
 // ============ 数据模型 ============
 
 const (