The #285 gate dropped every remapped (wrong-layout) candidate shorter than 3
chars, which broke the legitimate short prefix '/сщ' -> 'co' -> Code while '/co'
still worked. Replace the blanket length filter with a match-TYPE gate: the
original query and remaps >= 3 chars match fully (title/description/searchTerms);
a short (1-2 char) remap is restricted to a TITLE fuzzy-match. So '/сщ' -> 'co'
matches the 'Code' title again, while '/cy' -> 'сн' and '/b' -> 'и' still do not
surface Footnote (they only ever leaked in via the 'сноска'/'примечание'
searchTerm substrings, not the title).
Adds positive tests for /сщ and /co; keeps the /cy and /b negatives.
closes#283
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
agent_coder