feat(git): coupling score weights -> config (bo-y1kd)#34
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calculate_coupling_score baked in 0.7*freq + 0.3*recency with a 30-day recency knee. Surface both as [git] config: - coupling_freq_weight (default 0.7; recency weight = 1 - this) - coupling_recency_days (default 30.0; recency decay knee) Threaded through analyze_coupling + reindex_coupling (calibrate). Defaults reproduce prior behavior exactly (zero change). Non-positive recency_days falls back to 30 to guard the decay. Tests cover default + custom weights and custom knee; docs updated. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GuQ96t4m1vzFQ6v72btayV
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What
calculate_coupling_score(src/index/git.rs) hardcoded0.7*freq + 0.3*recencywith a 30-day recency knee. Surfaces both as[git]config:coupling_freq_weight(default 0.7; recency weight =1 - this)coupling_recency_days(default 30.0; recency decay knee — a pair last changed N days ago scores 0.5 on recency)Affects
bobbin related+ PPR seeding scores.How
Threaded the two weights through
analyze_coupling→calculate_coupling_score, and throughreindex_couplingin the calibrate path. Index + calibrate call sites read fromconfig.git.Safety
coupling_recency_daysfalls back to 30 to guard the decay denominator.Tests
test_calculate_coupling_scoreextended: default weights (3 cases, unchanged), custom recency-dominant weights, and custom 60-day knee. Config round-trip + legacy-git-config tests green. Docs[git]block updated.🤖 Generated with Claude Code