chore: 更新版本号至1.0.4，修改安装程序链接和更新日志内容

Co-authored-by: Copilot <copilot@github.com>

Author: lanjian

index.json

@@ -1,16 +1,14 @@
 {
     "productName": "OortCloud Desktop",
     "appId": "OORTCLOUD-DESKTOP-2024-1234-5678",
-    "version": "1.0.3",
+    "version": "1.0.4",
     "releaseTime": "2026-04-24T21:30:00+08:00",
     "forceUpdate": false,
-    "installerUrl": "https://github.com/OortCloudGroup/OortCloudDesktop/releases/download/v1.0.3/OortCloudDesktop_Setup.exe",
+    "installerUrl": "https://github.com/OortCloudGroup/OortCloudDesktop/releases/download/v1.0.4/OortCloudDesktop_Setup.exe",
     "installerSha256": "",
     "installerSize": 0,
     "installerArgs": "/VERYSILENT /NORESTART /SUPPRESSMSGBOXES",
     "changelog": [
-        "调整默认页的布局",
-        "修复关于页面的国际化问题",
-        "修复更新程序不自动退出导致安装失败的bug"
+        "调整了默认扩展界面布局，使其更加美观"
     ]
 }