docs: keep search endpoints hot on vercel

apps/docs/vercel.json

@@ -0,0 +1,20 @@
+{
+	"crons": [
+		{
+			"path": "/api/search?q=keep-warm-cron-job",
+			"schedule": "*/4 * * * *"
+		},
+		{
+			"path": "/api/search?q=keep-warm-cron-job",
+			"schedule": "*/4 * * * *"
+		},
+		{
+			"path": "/api/ai?q=keep-warm-cron-job",
+			"schedule": "*/4 * * * *"
+		},
+		{
+			"path": "/api/ai?q=keep-warm-cron-job",
+			"schedule": "*/4 * * * *"
+		}
+	]
+}