feat(deps): upgrade upstream dependencies (#947)

Automated daily upgrade of upstream dependencies:
- rolldown (latest tag)
- rolldown-vite (latest tag)
- vitest (latest npm version)
- tsdown (latest npm version)

Build status: success

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Primarily bumps build/lint tool dependencies and lockfile entries,
with minimal impact on runtime behavior. Risk is limited to potential
CI/build or packaging regressions from the upgraded toolchain versions.
> 
> **Overview**
> Upgrades the toolchain dependencies, including `tsdown` to `0.21.3`
(and matching `@tsdown/css`/`@tsdown/exe` peer/bundled versions), plus
related updates in `pnpm-lock.yaml`.
> 
> Tweaks TypeScript ergonomics in templates/docs by adding a `*.css`
module declaration for VitePress and including Node typings (`"types":
["node"]`) in the CLI generator `tsconfig.json`. Also bumps
`oxlint-tsgolint` and `tinyexec` versions via workspace catalog/lockfile
updates.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
fd6f74f. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: Brooooooklyn

docs/.vitepress/env.d.ts

@@ -5,6 +5,9 @@ declare module '*.vue' {
   export default component;
 }
 
+// CSS module declarations
+declare module '*.css' {}
+
 // Asset module declarations
 declare module '*.riv' {
   const src: string;

packages/cli/templates/generator/tsconfig.json

@@ -4,6 +4,7 @@
     "module": "nodenext",
     "moduleResolution": "nodenext",
     "noEmit": true,
-    "resolveJsonModule": true
+    "resolveJsonModule": true,
+    "types": ["node"]
   }
 }

packages/core/package.json

@@ -136,8 +136,8 @@
   },
   "peerDependencies": {
     "@arethetypeswrong/core": "^0.18.1",
-    "@tsdown/css": "0.21.2",
-    "@tsdown/exe": "0.21.2",
+    "@tsdown/css": "0.21.3",
+    "@tsdown/exe": "0.21.3",
     "@types/node": "^20.19.0 || >=22.12.0",
     "@vitejs/devtools": "^0.0.0-alpha.31",
     "esbuild": "^0.27.0",
@@ -219,6 +219,6 @@
   "bundledVersions": {
     "vite": "8.0.0",
     "rolldown": "1.0.0-rc.9",
-    "tsdown": "0.21.2"
+    "tsdown": "0.21.3"
   }
 }