feat: add mainland-reachable desktop distribution

ui/app.js

@@ -2,6 +2,10 @@ const statusEl = document.getElementById("status");
 const spinner = document.getElementById("spinner");
 const retry = document.getElementById("retry");
 const detail = document.getElementById("detail");
+const updatePanel = document.getElementById("update-panel");
+const updateNotes = document.getElementById("update-notes");
+const installUpdate = document.getElementById("install-update");
+const skipUpdate = document.getElementById("skip-update");
 
 function tauri() {
   return window.__TAURI__;
@@ -18,6 +22,13 @@ function setStatus(message, kind) {
   }
 }
 
+function continueBoot(api) {
+  updatePanel.hidden = true;
+  spinner.hidden = false;
+  setStatus("正在启动…", "ok");
+  return api.core.invoke("skip_shell_update");
+}
+
 async function boot() {
   const api = tauri();
   if (!api) {
@@ -39,10 +50,42 @@ async function boot() {
       window.location.replace(event.payload.url);
     }
   });
+  await api.event.listen("shell-update-progress", function (event) {
+    const progress = event.payload || {};
+    const suffix = typeof progress.percent === "number" ? ` ${progress.percent}%` : "";
+    setStatus(`正在下载更新…${suffix}`, "ok");
+  });
+
   retry.addEventListener("click", function () {
     setStatus("正在重新启动…", "ok");
     api.core.invoke("restart");
   });
+  skipUpdate.addEventListener("click", function () {
+    continueBoot(api);
+  });
+  installUpdate.addEventListener("click", async function () {
+    installUpdate.disabled = true;
+    skipUpdate.disabled = true;
+    spinner.hidden = false;
+    setStatus("正在准备签名更新…", "ok");
+    try {
+      await api.core.invoke("install_shell_update");
+    } catch (error) {
+      installUpdate.disabled = false;
+      skipUpdate.disabled = false;
+      spinner.hidden = true;
+      statusEl.textContent = `更新失败：${String(error)}`;
+    }
+  });
+
+  const update = await api.core.invoke("check_shell_update");
+  if (update) {
+    spinner.hidden = true;
+    retry.hidden = true;
+    statusEl.textContent = `发现壳更新 ${update.version}`;
+    updateNotes.textContent = update.notes || "更新包已经签名，安装前会在本机完成校验。";
+    updatePanel.hidden = false;
+  }
 }
 
 if (document.readyState === "loading") {