The napi StreamState fields (utf8Pending, ansiPending) expect plain arrays
(Vec<u8>), not Buffers. Passing Buffer.from() caused 'Given napi value is
not an array on StreamState.utf8Pending' crash on multi-chunk bash output.
Added regression test for multi-chunk state passing.
AI-assisted: This change was authored with Claude (AI pair programming).
Replaces the multi-pass JS pipeline (TextDecoder → stripAnsi → sanitizeBinaryOutput)
in bash-executor.ts with a single native Rust call that handles UTF-8 decoding,
ANSI stripping, binary sanitization, and CR removal in one pass.
Key features:
- StreamState tracks incomplete UTF-8 and ANSI sequences across chunk boundaries
- Standalone stripAnsiNative() and sanitizeBinaryOutputNative() for use elsewhere
- Comprehensive test coverage for split multibyte, split ANSI, binary data
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
