Tokens for a lexical second chance after an exact or semantic lane misses.
Natural-language and regex shapes normally have no extract_tokens output,
but quoted code phrases still carry useful identifiers. Reuse the same quote
parser used for semantic name priors so a query such as "outside <touser>" reminder text can rank files containing either quoted token.
Lexical tokens for a short natural-language concept routed to Hybrid (e.g.
“parse imports”). extract_tokens returns nothing for NL (its words are not
code identifiers), but a short two-word concept is frequently a literal code
phrase the trigram lane can match. Split on whitespace and keep words of at
least 3 chars (the trigram floor).