fix: add helper redirect link for Appetize.io free-tier embeds

templates/player.html

@@ -958,6 +958,18 @@
                 }
                 phone.appendChild(screen);
                 viewportFrame.appendChild(phone);
+
+                if (appetizeKey) {
+                    const helper = document.createElement("div");
+                    helper.style.marginTop = "1rem";
+                    helper.style.fontSize = "0.85rem";
+                    helper.style.color = "var(--text-muted)";
+                    helper.style.textAlign = "center";
+                    helper.style.maxWidth = "320px";
+                    helper.style.lineHeight = "1.5";
+                    helper.innerHTML = `⚠️ 因 Appetize.io 免費方案限制內嵌功能，若畫面顯示「未啟用內嵌」，請 <a href="https://appetize.io/app/${encodeURIComponent(appetizeKey)}" target="_blank" style="color: #c084fc; text-decoration: underline; font-weight: 600;">點此在新分頁中打開模擬器</a>。`;
+                    viewportFrame.appendChild(helper);
+                }
             } else {
                 // Web based game (HTML or External Link)
                 // Hide side controls and console log panel, render full viewport width