size: fix compile error for a fixed-size convert shim (#446) - #447

textappend: TextAppenderBinType -> TextAppender (as bin)

binappend: ErrorBinaryAppenderType -> BinaryAppender

binappend: BinaryAppenderType -> BinaryAppender

binmarshal: ErrorTestType -> BinaryMarshaler

textmarshal: TextStringTestType -> TextMarshaler (as string)

textmarshal: TextBinTestType -> TextMarshaler (as bin)

binmarshal: BinaryTestType -> BinaryMarshaler

TestAppendTextString: Value: ignored

TextAppenderBinValue: Value: ignored

BinaryAppenderValue: Value: ignored

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-go@v5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/