Fix archive table columns and blend fallback

Fix client examples gap: unified refinement and GSM auto-select.

Harden PDC prediction accuracy against client golden examples.

feat: v2.3 AI construction suggestion, client reed list, and archive article picker

Align feasibility engine with client workflow and add GSM case selection.

fix: unify twill weave normalization, distance-weighted recommendation

fix: aggressive blend normalization, remove garbage rows, add blend percentage proximity matching

fix: exclude invalid Fin PPI=0 articles from PPI-relaxed fallback in prediction

Deploy: case-study recommendation engine + ply yarn fix + weighted percentile removal