QA: Declarative Generative UI (A2UI — Dynamic Schema) — Mastra

Test Steps

• Navigate to /demos/declarative-gen-ui
• Verify the CopilotChat surface renders with the suggestion chips
• Click "Show a KPI dashboard"; verify the agent calls generate_a2ui and a Card with 3-4 Metric components renders
• Click "Pie chart — sales by region"; verify a PieChart renders with legend + SVG donut
• Click "Bar chart — quarterly revenue"; verify the BarChart renders via Recharts with brand palette
• Click "Status report"; verify StatusBadge + InfoRow compose inside a Card

Expected Results

• A2UI dynamic catalog resolves Card, Metric, StatusBadge, InfoRow, PrimaryButton, PieChart, BarChart from ./a2ui/renderers.tsx
• The generate_a2ui tool on the Mastra weatherAgent produces operations that the @copilotkit/a2ui-renderer intercepts and renders.