fix: Add Windows installer registry entries, launch after install, and app icon

- Added Plugin.png as app icon in windows-app/assets/
- Updated NSIS config with runAfterFinish to launch app after install
- Added installer.nsh for proper Windows registry entries
- Fixed icon paths to use PNG format
- App now properly registers in Windows Installed Apps

windows-app/package.json

@@ -29,17 +29,18 @@
     "files": [
       "electron-main.js",
       "electron-preload.js",
-      "ui-dist/**/*"
+      "ui-dist/**/*",
+      "assets/**/*"
     ],
     "win": {
       "target": [
         "nsis"
       ],
-      "icon": "assets/icon.ico"
+      "icon": "assets/icon.png"
     },
     "mac": {
       "target": "dmg",
-      "icon": "assets/icon.icns"
+      "icon": "assets/icon.png"
     },
     "linux": {
       "target": "AppImage",
@@ -49,7 +50,11 @@
       "oneClick": false,
       "allowToChangeInstallationDirectory": true,
       "createDesktopShortcut": true,
-      "createStartMenuShortcut": true
+      "createStartMenuShortcut": true,
+      "runAfterFinish": true,
+      "shortcutName": "Plugin Compass",
+      "include": "installer.nsh",
+      "deleteAppDataOnUninstall": false
     }
   }
 }