Lower health check rate to 10s

app.py

@@ -370,7 +370,7 @@ HTML_CONTENT = """
                     let checkResponse = await fetch(`/check_video/${user_id}`);
                     let checkResult = await checkResponse.json();
                     if (checkResult.ready) break;
-                    await new Promise(resolve => setTimeout(resolve, 3000)); // Wait 3s before checking again
+                    await new Promise(resolve => setTimeout(resolve, 10000)); // Wait 10s before checking again
                 }
                 loader.classList.add("hidden");
                 let videoUrl = `/video/${user_id}?t=${new Date().getTime()}`;