Reads the per-hit /tag-*/data int16 8192x512 stacks (eight 1024x512 sensors), places the sensors on
one flat image from /metadata posx/posy/angle (or a refined CrystFEL .geom via --crystfel-geometry),
masks gaps, 5 px sensor edges and the amplifier-shield rows, converts ADU to photons at
0.00125 ADU/eV, and decodes chunks (shuffle+deflate) outside the HDF5 lock.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
