Method _tokenize

src/knowledge/loader.js:164–169

* Tokenize a query into normalized lowercase words ≥ 3 chars.

(text)

   * Tokenize a query into normalized lowercase words ≥ 3 chars.
   */
  _tokenize(text) {
    if (!text || typeof text !== 'string') return [];
    return text.toLowerCase()
      .split(/\W+/)
      .filter(w => w.length >= 3 && !STOP_WORDS.has(w));
  }

  /**
   * Score an entry against a query. Higher = more relevant.