fix: show error state in update notification instead of hiding

src/renderer/src/components/UpdateNotification.tsx

@@ -3,7 +3,7 @@
  * Shows when a new version is available and allows user to download/install
  */
 import { useState, useEffect } from 'react'
-import { Download, RefreshCw, X, CheckCircle } from 'lucide-react'
+import { Download, RefreshCw, X, CheckCircle, AlertCircle } from 'lucide-react'
 import { Button } from '@/components/ui/button'
 import type { UpdateStatus } from '../../../shared/electron-api'
 
@@ -39,16 +39,18 @@ export function UpdateNotification(): React.JSX.Element | null {
   if (dismissed) return null
   if (!updateStatus) return null
   if (updateStatus.status === 'checking' || updateStatus.status === 'not-available') return null
-  if (updateStatus.status === 'error') return null
 
   const version = updateStatus.info?.version
+  const isError = updateStatus.status === 'error'
 
   return (
     <div className="fixed bottom-4 right-4 z-50 animate-in slide-in-from-bottom-2 fade-in duration-300">
       <div className="flex items-center gap-3 rounded-lg border bg-card p-3 shadow-lg">
         {/* Icon */}
-        <div className="flex h-8 w-8 items-center justify-center rounded-full bg-primary/10">
-          {updateStatus.status === 'downloaded' ? (
+        <div className={`flex h-8 w-8 items-center justify-center rounded-full ${isError ? 'bg-destructive/10' : 'bg-primary/10'}`}>
+          {isError ? (
+            <AlertCircle className="h-4 w-4 text-destructive" />
+          ) : updateStatus.status === 'downloaded' ? (
             <CheckCircle className="h-4 w-4 text-primary" />
           ) : updateStatus.status === 'downloading' ? (
             <RefreshCw className="h-4 w-4 text-primary animate-spin" />
@@ -60,18 +62,22 @@ export function UpdateNotification(): React.JSX.Element | null {
         {/* Content */}
         <div className="flex flex-col gap-0.5">
           <span className="text-sm font-medium">
-            {updateStatus.status === 'downloaded'
-              ? 'Update ready'
-              : updateStatus.status === 'downloading'
-                ? 'Downloading update...'
-                : 'Update available'}
+            {isError
+              ? 'Update failed'
+              : updateStatus.status === 'downloaded'
+                ? 'Update ready'
+                : updateStatus.status === 'downloading'
+                  ? 'Downloading update...'
+                  : 'Update available'}
           </span>
           <span className="text-xs text-muted-foreground">
-            {updateStatus.status === 'downloading' && updateStatus.progress
-              ? `${Math.round(updateStatus.progress.percent)}%`
-              : version
-                ? `Version ${version}`
-                : 'New version available'}
+            {isError
+              ? 'Please download manually from GitHub'
+              : updateStatus.status === 'downloading' && updateStatus.progress
+                ? `${Math.round(updateStatus.progress.percent)}%`
+                : version
+                  ? `Version ${version}`
+                  : 'New version available'}
           </span>
         </div>
 
@@ -87,6 +93,15 @@ export function UpdateNotification(): React.JSX.Element | null {
               Restart
             </Button>
           )}
+          {isError && (
+            <Button
+              size="sm"
+              variant="outline"
+              onClick={() => window.open('https://github.com/multica-ai/multica/releases', '_blank')}
+            >
+              View Releases
+            </Button>
+          )}
           {updateStatus.status !== 'downloading' && (
             <Button size="icon" variant="ghost" className="h-7 w-7" onClick={handleDismiss}>
               <X className="h-4 w-4" />