🔴 RED: Tests proved obstacle_guard silently ignored system permission dialogs
and foreign app overlays, causing the bot to get stuck on Android modals.
🟢 GREEN: obstacle_guard now dismisses OBSTACLE_SYSTEM and OBSTACLE_FOREIGN_APP
with immediate back-press, preventing the interaction chain from running
against non-Instagram UI elements.
🔵 REFACTOR: Fixed broken import in resonance_evaluator (was importing
humanized_scroll from utils instead of physics.humanized_input).