[feat]: Integrate @tanstack/charts into Chart primitive

### Feature description Support `@tanstack/charts` for the `Chart` component (either as a native refactor or as an alternative alongside Recharts). ### Affected component/components - `Chart` (`components/ui/chart.tsx`) ### Motivation & Rationale - **SVG + Canvas Dual Engine:** Recharts hits DOM paint bottlenecks with larger datasets (~2k+ points). TanStack Charts allows switching to Canvas without changing chart logic or data models. - **Stack Consistency:** `shadcn/ui` already relies on `@tanstack/react-table`; adopting `@tanstack/charts` creates stack symmetry across data-heavy UI primitives. - **Type Safety & Tree-Shaking:** Offers a headless, modular architecture that integrates cleanly with Tailwind CSS variables (`var(--color-*)`). ### Proposed Solution - **Option A (Recipe):** Add a doc recipe showing how to construct `ChartContainer` using `@tanstack/charts`. - **Option B (Adapter/Migration):** Refactor `components/ui/chart.tsx` to support `@tanstack/charts` natively or via a configurable engine prop.