Complete native Android flows, adaptive UI and repository hardening - #4

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@11d5960a326750d5838078e36cf38b85af677262, actions/setup-java@cf277c60eb25467037889841efdb72551f06f6c3, actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02, android-actions/setup-android@9fc6c4e9069bf8d3d10b2204b1fb8f6ef7065407, gradle/actions/setup-gradle@ed408507eac070d1f99cc633dbcf757c94c7933a. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

setup-java v4 is deprecated and will no longer receive updates. Please migrate to actions/setup-java@v5.