Adds a repo +edit shortcut that updates repository metadata via
PATCH /:owner/:repo.json: --description, --website, --private,
--default-branch, --category-id, --language-id.
The server dispatches on which key is present (website, default_branch,
or general metadata) and the metadata path validates name/identifier,
so the command resolves them from the repository detail first and sends
each field group as its own request. Requires at least one field and
validates --private and integer IDs before any API call.
Production-verified against gitlink.org.cn (description/website update
and default-branch round-trip). Includes 6 unit tests and bilingual
README examples plus en-US/zh-CN i18n keys.
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
1eb3b7c485