Morphological analysis debug

Splits a Thai phrase into known dictionary words by greedy longest match. No AI, no database writes — pure lookup against existing entries.

bpra^L gaat^L yaang^L bpen^M thaang^M gaan^M wan^M nee^H

пра^L каат^L йаанг^L пэн^M тхаанг^M каан^M ван^M нии^H