Add make_hyper parameter (code-selected, not in settings): 0 - flat stack
(old behavior, all pre-existing call sites); >0 - transpose to hyperstack
[sensors][avgs+timestamps][pixel], z (top slider) - timestamps, t (bottom
slider) - sensor channels; 2 - insert per-timestamp average of all used
sensors as first channel (17th), computed from final conditioned slices.
Per-sensor full + center-fraction averages now work in individual mode
(pre-calculated merged-only average falls back to slice computation with
a warning instead of AIOOBE). Number of average frames stays variable
(0/1/2); fopen paths bit-identical by design.
Verified on 495-scene CUAS sequence: INDIVIDUAL debug hyperstack matches
the MERGED convention - to be used as oracle for RT conditioning.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>