b588e89f67
G9B adds a 4-iteration reset sweep on top of the existing e2e harness: - Reset is injected at four offsets (3/7/12/18 us) into a steady-state auto-scan burst, with mixed short/long hold durations (20-120 clk_100m) to exercise asynchronous assert paths through the FSM + CDCs. - Each iteration asserts: system_status drops to 0 during reset, new_chirp_frame resumes post-release, and obs_range_valid_count advances — proving the full DDC->MF chain recovers, not just the transmitter FSM. The stub and three existing testbenches are updated to drive the new adc_or_p/n ports tied to 1'b0/1'b1, matching the F-0.1 RTL change.