v0.2.0

Rewired sigil-json, sigil-log, sigil-mcp to their canonical extracted URLs at ^0.14.0. Adopted sigil: ^0.14; sigil-stdlib is now auto-derived (no explicit declaration). sigil-run stays in the monorepo, bumped to ^0.14.0. sigil-yaml -> ^0.9.1; sigil-later -> ^0.9.1.

MCP serverInfo version updated to "0.2.0" so initialize responses report the current release.