chore(gui): 版本号 1.9.0 → 1.9.1

v1.9.1 收 v1.9.0 之后发现并修复的四个 UI/统计缺陷：

- per-key 编辑器画布画进后台标签页的全局画布，弹窗空白且污染全局链
- per-key 保存成功却不关弹窗，toast 文案还把已保存说成会失败
- 首页日/周/月视图请求记录表恒为空，滚动加载新旧行错位
- per-key 弹窗复用共享 #modal-wrap id、编辑即落盘（取消撤不回）、
  无独立链时画布填满全部 226 个模型

v1.9.0 的 tag 与附件保持不动，作为发布时点的凭据。

Co-Authored-By: ModelRouter <noreply@modelrouter.dev>

cmd/gui/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "modelrouter-gui",
-  "version": "1.9.0",
+  "version": "1.9.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "modelrouter-gui",
-      "version": "1.9.0",
+      "version": "1.9.1",
       "license": "Proprietary",
       "devDependencies": {
         "electron": "^33.0.0",

cmd/gui/package.json

@@ -1,6 +1,6 @@
 {
   "name": "modelrouter-gui",
-  "version": "1.9.0",
+  "version": "1.9.1",
   "description": "ModelRouter Desktop — embedded ModelRouter core with tray",
   "author": "ModelRouter",
   "main": "main.js",