Graham McIntire
cd19e6626c
fix(tests): replace Process.sleep with event-driven sync patterns
Replaced unbounded Process.sleep calls across the test suite with
event-driven alternatives: :sys.get_state sync barriers, assert_receive
with bounded timeouts, and Process.send_after + assert_receive.
Largest improvements:
- storm_detector_test: 120-150ms sleeps removed, uses assert_receive
- deferred_discovery_test: 500ms -> 50ms (timeout test simulation)
- event_logger_test: polling loop replaced with :sys.get_state barrier
- tcp_executor_test: 2000ms sleep replaced with bounded recv timeout
- rate_limit_test: sleeps replaced with send_after + assert_receive
- Various 5-50ms sleeps removed from live_view tests
- Unused require Logger removed from 2 test files