Customize Design Agent

Every kind of knowledge has one home. Find the owner before editing, so a fix lands once and every asset after it follows:

The change	Its home
Brand facts: colours, fonts, logos, voice, graphic language	`workspace/brand/` (brand-onboarding)
A deliverable or workflow the team asks for often	a runtime skill, `skills/<name>/SKILL.md`
Doctrine for every visual: hierarchy, type, colour, charts	`skills/design-wiki/references/`
Identity, delivery and approval rules, how it talks	`instructions.md` (a budget test fails past about 8k tokens)
A rule a machine can count	a check in `workspace/tools/`
A tool or data source	an MCP server in `config/mcp.toml`
Which model plays which role, effort, budgets	`.env` settings; Models

Add a runtime skill

Start with the graphic the team asks for every week.