refactor: 调整 server 目录结构

backend/internal/server/middleware/wire.go

@@ -0,0 +1,22 @@
+package middleware
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/google/wire"
+)
+
+// JWTAuthMiddleware JWT 认证中间件类型
+type JWTAuthMiddleware gin.HandlerFunc
+
+// AdminAuthMiddleware 管理员认证中间件类型
+type AdminAuthMiddleware gin.HandlerFunc
+
+// ApiKeyAuthMiddleware API Key 认证中间件类型
+type ApiKeyAuthMiddleware gin.HandlerFunc
+
+// ProviderSet 中间件层的依赖注入
+var ProviderSet = wire.NewSet(
+	NewJWTAuthMiddleware,
+	NewAdminAuthMiddleware,
+	NewApiKeyAuthMiddleware,
+)