Fix 1 (correctness): keywordOverlapCount dedupes `a` into a Set so duplicate
keywords like ['router','router','gate'] ∩ ['router','gate'] yields 2 not 3.
Fix 2 (consistency): deep-freeze all nested threshold objects in DEFAULT_THRESHOLDS
matching the tools/cost-pricing.mjs pattern.
Fix 3 (cleanup): move isMutatingForBaseline check to top of evaluateThresholds
so key/th vars are only computed in the metered-tool branch.
Fix 4 (coverage): add LS=10 and AskUserQuestion=2 soft_flag tests.
Fix 5 (docs): JSDoc on METERED_TOOLS noting TodoWrite → TodoWrite_writes mapping.
Tests: 23 → 29 (+6), all GREEN.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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