chore(gui): 版本号 1.9.2 → 1.9.3

v1.9.3 收一处误导性错误与编辑器提示：
- AUTO 被密钥模型范围拦下时返回 model_not_found（像说 AUTO 没配置），
  改为 model_not_allowed 并说明修法
- per-key AUTO 链编辑器在该密钥范围不含 AUTO 时给出警告

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

cmd/gui/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "modelrouter-gui",
-  "version": "1.9.2",
+  "version": "1.9.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "modelrouter-gui",
-      "version": "1.9.2",
+      "version": "1.9.3",
       "license": "Proprietary",
       "devDependencies": {
         "electron": "^33.0.0",

cmd/gui/package.json

@@ -1,6 +1,6 @@
 {
   "name": "modelrouter-gui",
-  "version": "1.9.2",
+  "version": "1.9.3",
   "description": "ModelRouter Desktop — embedded ModelRouter core with tray",
   "author": "ModelRouter",
   "main": "main.js",