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Kazuki Yamada
cceb3fa7a4
intent(regression-net): PR #1562 (token-count cache) initially merged FileMetrics by file path via a Map, which silently collapsed entries when the same relative path appeared under multiple roots (packages/a/README.md vs packages/b/README.md both become README.md). Fixed by index-based assembly; this spec prevents any future optimization from re-introducing the collapse through a different layer (Set dedup, sortedFile uniqueing, output rendering, etc.) decision(content-sentinel): assert on unique content markers rather than `totalFiles` count — both roots' actual bytes reaching the pack output is the user-observable contract; counts couple the test to internal accounting constraint(existing-quirk): `sortedFilePathsByDir` in packager.ts inflates `totalFiles` by passing duplicate filename entries through each root's filter (string-equality on globally-flattened sorted paths). This is pre-existing; spec is intentionally count-agnostic to avoid coupling to that unrelated behavior. Added a bounded-duplication assertion (`<=2`) as a catch-all so a regression that explodes the duplication further still fails Covered: - xml style: both roots' READMEs and their src-side markers reach the output - plain style: same contract holds (style-agnostic rendering path) - duplication does not exceed the pre-existing 2x ceiling Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>