fix load app, download, upgrade

src/main/ipc-handlers.ts

@@ -4,7 +4,8 @@
  * Based on REQUIREMENTS.md:228-268
  */
 
-import { ipcMain, dialog } from "electron";
+import { ipcMain, dialog, app } from "electron";
+import { autoUpdater } from "electron-updater";
 import { v4 as uuidv4 } from "uuid";
 import {
   saveDomain,
@@ -34,6 +35,7 @@ import type {
   GetVersionsParams,
   RollbackParams,
   SetLocaleParams,
+  CheckUpdateResult,
 } from "@shared/types/ipc";
 import type { LocaleCode } from "@shared/types/locale";
 import type {
@@ -539,6 +541,69 @@ function registerSetLocale(): void {
   });
 }
 
+// ==================== App Version & Update IPC Handlers ====================
+
+/**
+ * Get the current app version
+ */
+function registerGetAppVersion(): void {
+  handle<void, string>("getAppVersion", async () => {
+    return app.getVersion();
+  });
+}
+
+/**
+ * Check for app updates
+ */
+function registerCheckForUpdates(): void {
+  handle<void, CheckUpdateResult>("checkForUpdates", async () => {
+    try {
+      // In development, autoUpdater.checkForUpdates will throw an error
+      // because there's no update server configured
+      if (process.env.NODE_ENV === "development" || !app.isPackaged) {
+        // Return mock result for development
+        return {
+          hasUpdate: false,
+          updateInfo: undefined,
+        };
+      }
+
+      const result = await autoUpdater.checkForUpdates();
+      
+      if (result && result.updateInfo) {
+        const currentVersion = app.getVersion();
+        const latestVersion = result.updateInfo.version;
+        
+        // Compare versions
+        const hasUpdate = latestVersion !== currentVersion;
+        
+        return {
+          hasUpdate,
+          updateInfo: hasUpdate
+            ? {
+                version: result.updateInfo.version,
+                releaseDate: result.updateInfo.releaseDate,
+                releaseNotes: result.releaseNotes as string | undefined,
+              }
+            : undefined,
+        };
+      }
+      
+      return {
+        hasUpdate: false,
+        updateInfo: undefined,
+      };
+    } catch (error) {
+      // If update check fails, return no update available
+      console.error("Update check failed:", error);
+      return {
+        hasUpdate: false,
+        updateInfo: undefined,
+      };
+    }
+  });
+}
+
 // ==================== Register All Handlers ====================
 
 /**
@@ -573,6 +638,10 @@ export function registerIpcHandlers(): void {
   registerGetLocale();
   registerSetLocale();
 
+  // App Version & Update
+  registerGetAppVersion();
+  registerCheckForUpdates();
+
   // Dialog
   registerShowSaveDialog();
   registerSaveFileContent();