Implement lightweight Porter-style suffix stripping in stemmer.go covering
plurals (-sses, -ies, -s), verb forms (-ed, -ing, -eed), and derivational
suffixes (-ational, -tional, -fulness, -ness, -ment, -ation, -ously,
-ively, -ably, -ally, -izer, -ingly). Words under 4 chars are unchanged
and results are guaranteed at least 2 chars.
tokenize() now emits both raw and stemmed forms so the index contains both.
Search() distinguishes stem-only matches (scoreStemWord=0.7) from exact
matches (1.0), keeping stemmed results slightly below raw hits.
22 stem unit tests, 5 search integration tests, and BenchmarkStem with
100 words. All existing tests pass with no regressions.
Co-Authored-By: Virgil <virgil@lethean.io>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Phase 0: Push test coverage from 92.1% to 100% by adding catalog_test.go
and targeted tests for all uncovered branches in search.go. Add
BenchmarkSearch with 150 topics (~745us/op baseline).
Phase 1: Implement three search improvements:
- Levenshtein-based fuzzy matching (max distance 2, words >= 3 chars)
- Quoted phrase search via extractPhrases() with +8.0 boost
- Tag boost (+3.0) and multi-word bonus (+2.0) scoring
- Named scoring constants replacing magic numbers
All changes are backward-compatible; Search() signature unchanged.
Co-Authored-By: Charon <developers@lethean.io>
YAML-based help catalog with topic search.
Single external dependency: gopkg.in/yaml.v3
Module: forge.lthn.ai/core/go-help
Co-Authored-By: Virgil <virgil@lethean.io>
