Native sequence overload demands scratch buffer >= entire input, body included #70

Severity: Low — 2026-10-30 security review

ReadOnlySequence.CopyTo throws if the scratch buffer is smaller than the whole sequence (bindings/dotnet/Glyph11.Native/Glyph11Parser.cs:132-133) — and the sequence includes the body, not just the header block.

The README's stackalloc byte[8192] "sized to your max header block" (README.md:93) therefore breaks on any larger multi-segment read: valid requests fail with an ArgumentException instead of the expected HttpParseException.

Fix: copy only up to the header-block limit and report "incomplete" beyond it.