Leon Mika f34061954f Use bytes.NewReader and add Dir/Env/Stdin coverage ... Replaces the handwritten bytesBuf/eof workaround with the canonical bytes.NewReader + io.EOF, and adds behavioural tests for the Dir, Env, and Stdin branches of Real.Run that the original plan didn't cover. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>		2026-05-02 09:49:05 +10:00
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runner	Use bytes.NewReader and add Dir/Env/Stdin coverage	2026-05-02 09:49:05 +10:00