Pro-E numeric codes cover most components, but parts downloaded as STEP
from online catalogs (rings, bushings, knobs...) get alphabetic Creo names
with no predictable shape. Add a second extraction path that tokenizes the
binary generically and validates candidates against the known codes in
cad_index.db, applying the same placement/occurrence rule used for bare
numeric codes. Numeric extraction is unchanged, so missing-from-index
reporting for renamed/moved Pro-E codes still works.
Also load all known prt/asm codes once per scan instead of one query per
candidate, in both RisolviAlberoComponenti and VerificaCompletezzaAssiemi.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
