Wave-count stability atlas for the Koch-Kurosaka-Knowlen-Kutz rotating detonation engine model: regime dataset and verified experimental compilation

Regime data for the two-parameter wave-count stability atlas of the Koch-Kurosaka-Knowlen-Kutz (KKKK) reduced-order rotating detonation engine model, plus the re-verified compilation of published experimental mode-transition data used for the qualitative overlay. Production atlas (atlas_fresh_fuller/): fresh-ignition protocol, 61 injector plenum pressures x 48 injector stiffnesses x 2 loss coefficients = 5,856 independent integrations (N=512 Fourier modes, ETDRK4, dt=5e-4). Per-point scalar diagnostics in NetCDF and Parquet: mode classification, locked wave count, dominant wavenumber, harmonic purity, wave speed, modulation index, amplitudes, dominant frequency; plus the assembled atlas and the detected regime-boundary table. Continuation sweep (pilot/): the hysteresis diagnostic - forward and backward quasistatic ramps in plenum pressure at one loss coefficient, including stored field snapshots u(x,t), from which the space-time diagrams and DMD spectra in the accompanying preprint are computed. These ramps also document the uniform-branch trapping that motivated the fresh-ignition protocol. Experimental compilation (data_experimental/): 37 operating points from six laboratories (University of Washington, AFRL, TU Berlin, University of Cincinnati, Purdue, Lavrentyev Institute). 25 points are verified against primary source texts - author theses and dissertations, arXiv preprints, and open companion papers on identical hardware - with the source and figure or table location recorded per point. Points that could not be verified are explicitly flagged, including those whose commonly cited source publishes no quantitative operating conditions at all. This audit corrected geometries, fuel systems, mode taxonomies, and in several cases the existence of claimed transitions. Also included: the sweep and calibration configuration files (frozen two-constant physical-to-model mapping) and the generated figure set.