feat(android): add native controls and continuous multi-touch

artemis/runtime/native_protocol.py

@@ -0,0 +1,27 @@
+"""Completion windows shared by the native executor and one-shot transport.
+
+NativeControls waits up to four seconds; touch frames last at most ten seconds.
+The grace also covers callback/release and transport cleanup. Search deadlines
+stop new input, while already-dispatched input retains its resource until quiet.
+"""
+
+from typing import Any
+
+CONTROL_COMPLETION_SECONDS = 5.0
+TOUCH_COMPLETION_GRACE_SECONDS = 5.0
+
+
+def input_completion_seconds(command: str, args: dict[str, Any]) -> float:
+    if command == "control_action":
+        return CONTROL_COMPLETION_SECONDS
+    if command != "touch_gesture":
+        return 0.0
+    frames = args.get("frames")
+    last = (
+        frames[-1].get("at_ms")
+        if isinstance(frames, list) and frames and isinstance(frames[-1], dict)
+        else None
+    )
+    # A malformed raw call still gets the conservative maximum drain window.
+    duration = min(max(last, 0), 10000) if type(last) is int else 10000
+    return duration / 1000 + TOUCH_COMPLETION_GRACE_SECONDS