v0.2.1 — fix SKILL.md folded-YAML frontmatter

Patch: the SKILL.md frontmatter parser now uses each ecosystem's standard YAML parser (js yaml, python PyYAML, go gopkg.in/yaml.v3, java SnakeYAML, csharp YamlDotNet) instead of a hand-rolled key: value split.

Fixes folded (description: >) and literal (description: |) block scalars — previously captured as just >/|, breaking descriptions for real skills (huddle, reqsume-kernel) in the skills prompt and the A2A card. Scalar-coerced + trimmed for byte-parity across ports; malformed YAML fails gracefully.

npm i toolnexus · pip install toolnexus · go get github.com/muthuishere/toolnexus/golang@v0.2.1 · dotnet add package Toolnexus --version 0.2.1 · io.github.muthuishere:toolnexus:0.2.1