Open Mercato releases must keep CHANGELOG.md, UPGRADENOTES.md, and version-specific downstream migration skills aligned. Apply this contract after the external skill resolves {version}, {date}, and the previous changelog release, but before it edits files or delegates to om-auto-create-pr.
Design System Guardian for Open Mercato. Use for frontend UI work, design-system compliance reviews, semantic token migration, hardcoded color or typography cleanup, DS-compliant page scaffolding, and common DS violations such as arbitrary text sizes, raw color classes, or missing shared states. Prefer this skill…
Build React/TypeScript frontends with modern patterns. Use for components, Suspense, lazy loading, useSuspenseQuery, MUI v7 styling, TanStack Router, performance optimization.
Build MCP servers for LLM-external service integration. Use for FastMCP (Python), MCP SDK (Node/TypeScript), tool design, API integration, resource providers.
Use when writing, reviewing, or refactoring Filament PHP v5 code -- resources, forms, tables, infolists, actions, widgets, panels, relation managers, multi-tenancy, testing, or plugin development. Always apply these standards to all Filament work.