Add `.claude-plugin/plugin.json` and `.claude-plugin/marketplace.json` so
the repo can be installed via:
/plugin marketplace add https://github.com/Nikolay-Shirokov/cc-1c-skills
/plugin install 1c-skills@cc-1c-skills
Plugin name `1c-skills`, marketplace name `cc-1c-skills` (matches repo
name). Version is omitted in `plugin.json` so Claude Code uses the git
commit SHA — convenient for active development without manual bumps.
Closes part of #18.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Nick Shirokov