Agent Skills: review-gitcode-pr

Review a GitCode pull request from a PR number or URL when `oh-gc` must fetch PR metadata, diff, and comments, local repository code must be inspected for context, and the output should be concrete findings or a GitCode submission draft. Use for GitCode PR review or comment-submission requests that depend on `oh-gc`. Do not use for generic local review, GitHub/GitLab flows, or automatic submission without explicit user confirmation.