fix(ci): add test script to web package.json

turbo run test was failing because @c0upons/web had no test script.
Adds a no-op placeholder so CI passes until real tests are written.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ralyodio

apps/web/package.json

@@ -8,6 +8,7 @@
     "build": "next build",
     "start": "next start",
     "lint": "eslint app/ components/ lib/",
+    "test": "echo 'No tests configured'",
     "typecheck": "tsc --noEmit",
     "db:migrate": "node scripts/migrate.mjs",
     "clean": "rm -rf .next out node_modules"