vite-plus-conventions

- Use [vite+](https://viteplus.dev) as the unified TypeScript toolchain. It wraps best-in-class tools behind a single CLI. Configure your entire toolchain in `vite.config.ts` by importing `defineConfig` from `vite-plus`. - Package manager: vite+ auto-detects from `package.json` engine field or lockfile (`pnpm-lock.yaml`, `yarn.lock`, `package-lock.json`, `bun.lock`). Fallback is `pnpm`. Run `vp install`, `vp add <pkg-name>` or `vp remove <pkg-name>` for managing package dependencies. - Node manager: vite+ manages Node.js versions — replaces `nvm`/`fnm`. Run `vp env on` then `vp env install <node-version>` to install Node.js runtime. Run `vp env pin` to pin version. - Linter: `oxlint` via vite+ — a fast Rust-powered alternative to legacy JavaScript linters. Run `vp lint` for linting with TypeScript-aware rules. - Formatter: `oxfmt` via vite+ — a fast alternative to legacy JavaScript formatters. Run `vp fmt` for consistent code formatting. - Type checker: `oxlint` with type-aware linting via vite+ — replaces `tsc --noEmit` for lint-time type checks. Configure it by enabling both `lint.options.typeAware` and `lint.options.typeCheck` in `vite.config.ts`. Run `vp lint` for type-aware linting. - Testing: `vitest` via vite+ — run `vp test` for fast Vite-native testing with HMR, coverage, and snapshot support. Import from `vite-plus/test` instead of `vitest` when writing tests. - Bundler: `rolldown` (Rust-powered Rollup replacement) for Vite apps, `tsdown` for library builds. Run `vp...