- Replace fixed ports with dynamic allocation (port 0) for all Stalwart listeners, including ManageSieve.
- Require KVM acceleration for Android integration tests; fail early with setup instructions if /dev/kvm is inaccessible.
- Require all ANDROID_APK_SCP environment variables for deployment; fail early if any are missing.
- Revert emulator boot timeouts to standard values (120s device / 60s boot) now that software emulation is disabled.