diff --git a/system1-factory/web/js/proxy-input.js b/system1-factory/web/js/proxy-input.js
index 6d58395..ed6dce4 100644
--- a/system1-factory/web/js/proxy-input.js
+++ b/system1-factory/web/js/proxy-input.js
@@ -444,12 +444,4 @@ async function saveProxyInput() {
 }
 
 // ===== Toast =====
-function showToast(msg, type) {
-    if (window.showToast) { window.showToast(msg, type); return; }
-    const c = document.getElementById('toastContainer');
-    const t = document.createElement('div');
-    t.className = `toast toast-${type || 'info'}`;
-    t.textContent = msg;
-    c.appendChild(t);
-    setTimeout(() => t.remove(), 3000);
-}
+// showToast는 tkfb-core.js에서 제공 (중복 정의 제거)