tests: narrow unit test/watch globs to tests/unit/test-*.mjs

Restrict node --test patterns so only files named test-*.mjs are executed, preventing unintended files from being picked up.

Author: kanad13

package.json

@@ -10,11 +10,11 @@
 		"health": "curl -s http://localhost:13331/api/health | json_pp || curl -s http://localhost:13331/api/health",
 		"backup": "mkdir -p backups && cp mtt-*.json backups/backup-$(date +%Y%m%d-%H%M%S)/ 2>/dev/null || true",
 		"test": "npm run test:api && npm run test:e2e",
-		"test:unit": "node --test tests/unit/**/*.mjs",
+		"test:unit": "node --test tests/unit/test-*.mjs",
 		"test:e2e": "node tests/e2e/test-ui-complete.cjs",
 		"test:api": "node tests/e2e/test-backend-api.cjs",
 		"test:headless": "HEADLESS=true node tests/e2e/test-ui-complete.cjs",
-		"test:watch": "node --test --watch tests/unit/**/*.mjs"
+		"test:watch": "node --test --watch tests/unit/test-*.mjs"
 	},
 	"keywords": [
 		"time-tracker",