reduce smile buffer expansion - #751
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cowtowncoder
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Aug 13, 2026
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Suggested by Claude AI and looks plausible
The fix changes len + len + len + 2 (3x expansion + header) to len + 2 (just header) in writeRawUTF8String, since the input bytes are already UTF-8 encoded and don't need expansion. This avoids unnecessary falls to the slower _writeBytes streaming path for long strings that would comfortably fit in the buffer.