fix(entity): default an unsized actor's hitbox to 0.6 x 1.8, scaled - #69

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4, actions/checkout@v4, actions/setup-java@v4, actions/setup-python@v5, hendrikmuhs/ccache-action@v1.2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

no ANDROID_KEYSTORE_BASE64 secret: this apk cannot update an install from another run