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CLAUDE.md: swap Bromite for Violentmonkey throughout, add installed golang skills to relevant skills, add comment-writing rules, add a design-system pointer rule. docs/design-system.md: rewrite against the current Claude Design project and the tokens/components already shipped in backend/static/style.css (danger/slate/moss/clay/trash, action key, brand mark). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>