- default engine: fielded BM25 ensemble (action_v1 remains a shadow candidate)
- add --explain score_breakdown: per-field contributions, structured
multiplier, query classification and avoid_when penalty
- add DWS_TOOL_SEARCH_* env overrides (algorithm, k1/b, field weights,
explain) for release-independent tuning and rollback
- tokenizer: CJK unigram+bigram so single-character intents match; align
isToolSearchCJK with unicode.Han used by the evaluation slices
- structured routing: extend vocabularies with English synonyms,
word-boundary matching for ASCII values, restrict the rerank gate to
technical identifiers only
- avoid_when demotion layer wraps every lexical algorithm (Forbidden@5
proxy 37.55% -> 0); intent-overlap matching rejected after control
showed it demoted gold answers (Recall@5 0.8664 -> 0.7845)
- remove the OA task_id +1.00 fixture-specific multiplier
- build the default engine once per process for long-lived hosts
- evaluation baseline: intent-proxy R@5 990/1123 (88.16%); update
integration sentinels accordingly
玉澜
0df293186a