refactor: Implement dependency injection for handlers and services

- Refactored AuthHandler, UserHandler, TextureHandler, ProfileHandler, CaptchaHandler, and YggdrasilHandler to use dependency injection.
- Removed direct instantiation of services and repositories within handlers, replacing them with constructor injection.
- Updated the container to initialize service instances and provide them to handlers.
- Enhanced code structure for better testability and adherence to Go best practices.

internal/service/serialize_service_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 
 	"go.uber.org/zap/zaptest"
+	"gorm.io/datatypes"
 )
 
 // TestSerializeUser_NilUser 实际调用SerializeUser函数测试nil用户
@@ -19,25 +20,51 @@ func TestSerializeUser_NilUser(t *testing.T) {
 // TestSerializeUser_ActualCall 实际调用SerializeUser函数
 func TestSerializeUser_ActualCall(t *testing.T) {
 	logger := zaptest.NewLogger(t)
-	user := &model.User{
-		ID:       1,
-		Username: "testuser",
-		Email:    "test@example.com",
-		// Properties 使用 datatypes.JSON，测试中可以为空
-	}
 
-	result := SerializeUser(logger, user, "test-uuid-123")
-	if result == nil {
-		t.Fatal("SerializeUser() 返回的结果不应为nil")
-	}
+	t.Run("Properties为nil时", func(t *testing.T) {
+		user := &model.User{
+			ID:       1,
+			Username: "testuser",
+			Email:    "test@example.com",
+		}
 
-	if result["id"] != "test-uuid-123" {
-		t.Errorf("id = %v, want 'test-uuid-123'", result["id"])
-	}
+		result := SerializeUser(logger, user, "test-uuid-123")
+		if result == nil {
+			t.Fatal("SerializeUser() 返回的结果不应为nil")
+		}
 
-	if result["properties"] == nil {
-		t.Error("properties 不应为nil")
-	}
+		if result["id"] != "test-uuid-123" {
+			t.Errorf("id = %v, want 'test-uuid-123'", result["id"])
+		}
+
+		// 当 Properties 为 nil 时，properties 应该为 nil
+		if result["properties"] != nil {
+			t.Error("当 user.Properties 为 nil 时，properties 应为 nil")
+		}
+	})
+
+	t.Run("Properties有值时", func(t *testing.T) {
+		propsJSON := datatypes.JSON(`[{"name":"test","value":"value"}]`)
+		user := &model.User{
+			ID:         1,
+			Username:   "testuser",
+			Email:      "test@example.com",
+			Properties: &propsJSON,
+		}
+
+		result := SerializeUser(logger, user, "test-uuid-456")
+		if result == nil {
+			t.Fatal("SerializeUser() 返回的结果不应为nil")
+		}
+
+		if result["id"] != "test-uuid-456" {
+			t.Errorf("id = %v, want 'test-uuid-456'", result["id"])
+		}
+
+		if result["properties"] == nil {
+			t.Error("当 user.Properties 有值时，properties 不应为 nil")
+		}
+	})
 }
 
 // TestProperty_Structure 测试Property结构