Porting to Dart and benchmarking a bit #629

Hi! As you may have seen, I've been porting agent-device to Dart and trying to maintain some parity with upstream agent-device.

One challenge I'm seeing both for Flutter and React Native apps is the flakiness. Do you see it as well in your tests? What I mean is that sometimes even the og agent-device misses some taps or is not able to scroll.

I've also noticed that iOS runner does not execute gestures like pan/rotate/fling on the RN test app - is that expected?

I decided to build some benchmarks to see if this issue is coming from vibe-coding the agent-device-dart, or is it inherent to the runner approach. The main difference between agent-device and agent-device-dart is that the latter does not use daemon approach.

Things that made the port look good (credit to your design):

• After a clean runner build, snapshot/interaction parity is close. Your daemon keeps per-command device ops fast; the Dart port (no daemon) is a bit faster with cold-open and process startup but each command is slightly slower.
• The fixture + replay format made a rigorous A/B benchmark possible at all

Results:

• https://github.com/orestesgaolin/agent-device-dart/blob/main/benchmark/report/REPORT-flutter-fixture-ios.md
• https://github.com/orestesgaolin/agent-device-dart/blob/main/benchmark/report/REPORT-flutter-fixture-android.md
• https://github.com/orestesgaolin/agent-device-dart/blob/main/benchmark/report/REPORT-expo-test-app-ios.md

Full disclosure - my port is fully vibe coded and I'm going with it mostly as an experiment ;) No intention to build competitor.