Add a `label` shortcut group wrapping the GitLink issue_tags (项目标记) API
with +list / +create / +update / +delete, plus the gitlink-label Skill,
bilingual README usage, and a changelog entry.
- +list supports keyword filter, only-name, and sort options
- +create defaults color to #1E90FF and validates hex client-side
- +update fetches current values and merges, preserving unspecified fields
- unit tests cover HTTP method, path, query, payload, color validation, id coercion
- ignore the local `gitlink-cli` build artifact (.gitignore previously only
ignored the Windows .exe)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Surponess
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