Breaking Changes DiscreteSequence now includes ψ, the RF rotating-frame phase. get_rfs(seq, t) now returns (B1, Δf, ψ) instead of (B1, Δf). RF samples from get_samples(seq; events=[:rf]) now include ψ in addition to rf and Δf. Features Added rf_frame_phase(rf) to compute the RF rotating-frame phase from RF frequency modulation, centered so ψ(t_center) == 0. Discretized sequences now carry enough RF-frame information for split RF simulation blocks to be simulated independently and consistently. Moved RF/ADC dead-time and RF ring-down validation into check_timing. Use Pulseq ADC dwell-edge duration when computing block duration. Shared ADC dwell and compact RF/gradient timing helpers between Base and Files. Included extension durations and duplicate TRIGGERS / ROTATIONS checks. Updated legacy Pulseq block-duration reconstruction.

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