diff --git a/internal/config/site_settings.go b/internal/config/site_settings.go
index 0e7e513..11fd894 100644
--- a/internal/config/site_settings.go
+++ b/internal/config/site_settings.go
@@ -7,6 +7,7 @@ import (
 	"metazone.cc/mce/internal/model"
 
 	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
 )
 
 // SiteSettings 站点设置管理器（DB 持久化 + 内存缓存，不重启生效）
@@ -69,10 +70,13 @@ func (s *SiteSettings) GetBool(key string, defaultVal bool) bool {
 	return b
 }
 
-// Set 写入设置（同步写 DB + 更新内存）
+// Set 写入设置（同步写 DB + 更新内存，使用 UPSERT 兼容首次保存）
 func (s *SiteSettings) Set(key, value string) error {
 	entry := model.SiteSetting{Key: key, Value: value}
-	if err := s.db.Save(&entry).Error; err != nil {
+	if err := s.db.Clauses(clause.OnConflict{
+		Columns:   []clause.Column{{Name: "key"}},
+		DoUpdates: clause.AssignmentColumns([]string{"value"}),
+	}).Create(&entry).Error; err != nil {
 		return err
 	}
 	s.mu.Lock()
diff --git a/templates/admin/html/layout/footer.html b/templates/admin/html/layout/footer.html
index 02684c5..9a23e23 100644
--- a/templates/admin/html/layout/footer.html
+++ b/templates/admin/html/layout/footer.html
@@ -3,7 +3,7 @@
 <script src="/shared/static/js/utils.js?v={{assetV "/shared/static/js/utils.js"}}" nonce="{{.CSPNonce}}"></script>
 <script src="/admin/static/js/common.js?v={{assetV "/admin/static/js/common.js"}}" nonce="{{.CSPNonce}}"></script>
 {{if .ExtraJS}}
-<script src="{{.ExtraJS}}" nonce="{{.CSPNonce}}"></script>
+<script src="{{.ExtraJS}}?v={{assetV .ExtraJS}}" nonce="{{.CSPNonce}}"></script>
 {{end}}
 </body>
 </html>
diff --git a/templates/admin/static/js/site-settings.js b/templates/admin/static/js/site-settings.js
index a364047..5c27a6a 100644
--- a/templates/admin/static/js/site-settings.js
+++ b/templates/admin/static/js/site-settings.js
@@ -36,7 +36,10 @@
     async function loadSettings() {
         try {
             var res = await api.get('/api/admin/site-settings');
-            if (!res.success) return;
+            if (!res.success) {
+                showToast(res.message || '加载设置失败', 'error');
+                return;
+            }
 
             // 所有开关
             var audit = res.data.audit || {};
@@ -138,6 +141,7 @@
     // --- 渲染其他设置（过滤已有专属UI的key） ---
     function renderOtherSettings(all) {
         var container = document.getElementById('general-settings');
+        if (!container) return; // 部分页面无此容器
         var filtered = [];
         Object.keys(all).forEach(function(k) {
             if (!DEDICATED_KEYS[k]) filtered.push(k);