feat(updates): add system update endpoint and UI

Add automatic update functionality to allow users to update the
application directly from the UI without manual git commands.

Changes:
- Add POST /api/system/update endpoint that runs git pull and npm
  install
- Enhance useVersionCheck hook to fetch release information including
  changelog
- Update VersionUpgradeModal to display changelog and handle one-click
  updates
- Add update progress tracking with output display and error handling
- Bump version to 1.10.4

The update endpoint executes git checkout main, git pull, and npm
install, providing real-time output to the user. After successful
update, users are prompted to restart the server.

src/hooks/useVersionCheck.js

@@ -5,28 +5,39 @@ import { version } from '../../package.json';
 export const useVersionCheck = (owner, repo) => {
   const [updateAvailable, setUpdateAvailable] = useState(false);
   const [latestVersion, setLatestVersion] = useState(null);
+  const [releaseInfo, setReleaseInfo] = useState(null);
 
   useEffect(() => {
     const checkVersion = async () => {
       try {
         const response = await fetch(`https://api.github.com/repos/${owner}/${repo}/releases/latest`);
         const data = await response.json();
-        
+
         // Handle the case where there might not be any releases
         if (data.tag_name) {
           const latest = data.tag_name.replace(/^v/, '');
           setLatestVersion(latest);
           setUpdateAvailable(version !== latest);
+
+          // Store release information
+          setReleaseInfo({
+            title: data.name || data.tag_name,
+            body: data.body || '',
+            htmlUrl: data.html_url || `https://github.com/${owner}/${repo}/releases/latest`,
+            publishedAt: data.published_at
+          });
         } else {
           // No releases found, don't show update notification
           setUpdateAvailable(false);
           setLatestVersion(null);
+          setReleaseInfo(null);
         }
       } catch (error) {
         console.error('Version check failed:', error);
         // On error, don't show update notification
         setUpdateAvailable(false);
         setLatestVersion(null);
+        setReleaseInfo(null);
       }
     };
 
@@ -35,5 +46,5 @@ export const useVersionCheck = (owner, repo) => {
     return () => clearInterval(interval);
   }, [owner, repo]);
 
-  return { updateAvailable, latestVersion, currentVersion: version };
+  return { updateAvailable, latestVersion, currentVersion: version, releaseInfo };
 };