重构代码结构与认证体系，集成异步任务消费者

pkg/u/u.go

@@ -1,12 +1,31 @@
 package u
 
-import "time"
+import (
+	"fmt"
+	"time"
+)
 
 // P 是一个工具函数，用于在表达式内原地创建一个指针
 func P[T any](v T) *T {
 	return &v
 }
 
+func Z[T any](v *T) T {
+	if v == nil {
+		var zero T
+		return zero
+	}
+	return *v
+}
+
+func X[T comparable](v T) *T {
+	var zero T
+	if v == zero {
+		return nil
+	}
+	return &v
+}
+
 func Today() time.Time {
 	var now = time.Now()
 	return time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
@@ -21,14 +40,6 @@ func SameDate(date time.Time) bool {
 	return date.Year() == now.Year() && date.Month() == now.Month() && date.Day() == now.Day()
 }
 
-func Z[T any](v *T) T {
-	if v == nil {
-		var zero T
-		return zero
-	}
-	return *v
-}
-
 func Or[T any](v *T, or T) T {
 	if v == nil {
 		return or
@@ -36,3 +47,17 @@ func Or[T any](v *T, or T) T {
 		return *v
 	}
 }
+
+func CombineErrors(errs []error) error {
+	var combinedErr error = nil
+	for _, err := range errs {
+		if err != nil {
+			if combinedErr == nil {
+				combinedErr = err
+			} else {
+				combinedErr = fmt.Errorf("%v; %w", combinedErr, err)
+			}
+		}
+	}
+	return combinedErr
+}