The initialization page computed its ETA by regex-parsing the English
details strings ("Found N", "Processing x/y") and the progress bar
advanced per file, so one 7 GB LoRA and one 100 KB embedding moved it
by the same amount.
The scanner progress callbacks now carry the collected file sizes end
to end: process_models/count_models broadcasts include structured
processed/total/bytes_done/bytes_total fields, and the bar percentage
is weighted by bytes (falling back to file counts when sizes are
unavailable). initialization.js consumes the structured fields
directly - no more string parsing - and computes the remaining-time
estimate per byte, keeping the file-count path as a fallback.