fix: URL解码处理和移除BOM字符

- 添加assets文件路径的URL解码处理，支持特殊字符
- 添加NoRoute处理器的URL解码
- 移除dashboard.go文件中的BOM字符
- 添加Vite构建配置确保文件名格式正确

backend/cmd/main.go

@@ -6,6 +6,7 @@ import (
 	"io/fs"
 	"log"
 	"net/http"
+	"net/url"
 	"os"
 	"strings"
 	"verification-platform-backend/internal/config"
@@ -263,8 +264,12 @@ func setupEmbeddedFrontend(r *gin.Engine) {
 
 	r.GET("/assets/*filepath", func(c *gin.Context) {
 		filepath := c.Param("filepath")
+		decodedPath, err := url.PathUnescape(filepath)
+		if err != nil {
+			decodedPath = filepath
+		}
 		c.Header("Cache-Control", "public, max-age=31536000, immutable")
-		c.FileFromFS("assets/"+filepath, http.FS(distFS))
+		c.FileFromFS("assets/"+decodedPath, http.FS(distFS))
 	})
 
 	r.NoRoute(func(c *gin.Context) {
@@ -274,7 +279,11 @@ func setupEmbeddedFrontend(r *gin.Engine) {
 		}
 
 		path := strings.TrimPrefix(c.Request.URL.Path, "/")
-		if f, err := distFS.Open(path); err == nil {
+		decodedPath, err := url.PathUnescape(path)
+		if err != nil {
+			decodedPath = path
+		}
+		if f, err := distFS.Open(decodedPath); err == nil {
 			f.Close()
 			c.FileFromFS(c.Request.URL.Path, http.FS(distFS))
 			return