Creates three new Claude plugin family directories per the
plugin-restructure RFC: core-go (Go-family tooling), core-php
(PHP-family tooling), infra (ops / devops / deploy tooling). Each
carries .claude-plugin/plugin.json, YAML marketplace.yaml, README,
and commands/agents/skills stubs. Marketplace format is YAML per
RFC; the legacy JSON marketplace for core-agent is left untouched.
Appends a Resolution section to the plugin-restructure RFC recording
the YAML-over-JSON decision and noting that the dappcore→core rename
at cross-plugin metadata level is scoped to #92.
Closes tasks.lthn.sh/view.php?id=91
Co-authored-by: Codex <noreply@openai.com>
Co-Authored-By: Virgil <virgil@lethean.io>
