Mobile app version checking endpoints
{
"version": "1.2.3",
"build": "123",
"minimumVersion": "1.0.0",
"updateRequired": false,
"updateAvailable": true,
"releaseNotes": "Bug fixes and performance improvements",
"downloadUrl": "https://...",
"releaseDate": "2024-01-15T10:00:00Z",
"platform": "ios" | "android"
}