fix(ui): add vitest dep + --passWithNoTests so test script doesn't fail

The test script referenced vitest without declaring the devDep, and vitest
exits non-zero when no test files match. Adds the missing dep and the flag
to keep CI green for empty test suites.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/ui/package.json

@@ -8,18 +8,19 @@
   "scripts": {
     "build": "echo 'typechecked by consuming app bundler'",
     "lint": "eslint .",
-    "test": "vitest run",
+    "test": "vitest run --passWithNoTests",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "clsx": "^2.1.0",
-    "tailwind-merge": "^3.0.0",
-    "react": "^19.0.0"
+    "react": "^19.0.0",
+    "tailwind-merge": "^3.0.0"
   },
   "devDependencies": {
     "@repo/eslint-config": "workspace:*",
     "@repo/typescript-config": "workspace:*",
     "@types/react": "^19.0.0",
-    "tailwindcss": "^4.1.0"
+    "tailwindcss": "^4.1.0",
+    "vitest": "^3.1.0"
   }
 }

pnpm-lock.yaml

@@ -338,6 +338,9 @@ importers:
       tailwindcss:
         specifier: ^4.1.0
         version: 4.2.2
+      vitest:
+        specifier: ^3.1.0
+        version: 3.2.4(@types/debug@4.1.13)(@types/node@25.5.2)(happy-dom@20.8.9)(jiti@2.6.1)(lightningcss@1.32.0)(sass@1.99.0)(tsx@4.21.0)
 
 packages: