refactor(pkgs): share vitest config and dedupe helpers (#3384)

fluxer_api/pkgs/cache/vitest.config.ts

@@ -1,18 +1,3 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
-import {defineConfig} from 'vitest/config';
-
-export default defineConfig({
-	resolve: {tsconfigPaths: true},
-	test: {
-		globals: true,
-		environment: 'node',
-		include: ['**/*.{test,spec}.{ts,tsx}'],
-		exclude: ['node_modules', 'dist'],
-		coverage: {
-			provider: 'v8',
-			reporter: ['text', 'json', 'html'],
-			exclude: ['**/*.test.tsx', '**/*.spec.tsx', 'node_modules/'],
-		},
-	},
-});
+export {default} from '../../../tsconfigs/vitest.base.mts';