Dashboard URL and label configured in dashboards.yaml; each entry
becomes a product flavor with BuildConfig.DASHBOARD_URL injected
at build time. APKs output as <flavor>-release.apk.
AGP 8.7.3 reads android.aapt2FromMavenOverride via providers.gradleProperty()
which only reads gradle.properties files, not JVM system properties set via
GRADLE_OPTS -D. The shellHook rewrites the sentinel value on every nix develop
so the correct nix store path is always present before gradle runs.