kotlinperf evidence

Updated 2026-10-22 Asia/Shanghai (Batch B G4 fill).

kt-list-add-hot–kt-println-hot measured on kotlinc 2.0.21 / JRE 21. KT004 was removed after an inconclusive retest (see _removed/). Defaults unchanged.

See per-rule *.md + *.jsonl (or blocked stubs). Policy: ../docs/evidence-policy.md. Root matrix: ../../../docs/rule-regression.md.