Summary
Add USB context manager support and optimize polling interval
Problem
Missing context manager: USB resources could leak on exceptions
Aggressive polling: 100 Hz (10ms) unnecessarily high for human button presses
Changes
Context Manager Support (Critical Fix B)
Added __enter__ and __exit__ methods to XVF3800USBClient class
Enhanced close() with proper null checks and error handling
Enables safe with statement usage
Polling Optimization (Critical Fix C)
Changed default poll_interval_seconds from 0.01 to 0.05 (100 Hz → 20 Hz)
Updated XVF3800ButtonRuntimeConfig dataclass default
Updated fallback default in __init__ constructor
imonlinux
67abca1111