Notes
Cataloguing, culling and geotagging a real photo archive: what works, what breaks, and why the file on disk always wins.
HEIC vs JPEG: what the smaller file costs
HEIC saved 18% of the disk in our thumbnail cache and charged encoder time for it. What we measured at three sizes, and where the trade flips.
Why moving a folder breaks your photo catalogue
Photo libraries store a path and call it an identity. Move the folder and the link snaps — here is what is really happening, and what fixes it.