feat(status): display version and update status in nupst status command

- Add version display at the top of status output
- Check for available updates and notify user
- Show "Up to date" or "Update available" with version
- Display before service and UPS status information
- Improves user awareness of software version and updates

Bumps version to 4.1.4

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "@serve.zone/nupst",
-  "version": "4.1.3",
+  "version": "4.1.4",
   "exports": "./mod.ts",
   "tasks": {
     "dev": "deno run --allow-all mod.ts",

ts/systemd.ts

@@ -134,6 +134,45 @@ WantedBy=multi-user.target
    * Get status of the systemd service and UPS
    * @param debugMode Whether to enable debug mode for SNMP
    */
+  /**
+   * Display version information and update status
+   * @private
+   */
+  private async displayVersionInfo(): Promise<void> {
+    try {
+      const nupst = this.daemon.getNupstSnmp().getNupst();
+      const version = nupst.getVersion();
+      
+      // Check for updates
+      const updateAvailable = await nupst.checkForUpdates();
+      
+      // Display version info
+      if (updateAvailable) {
+        const updateStatus = nupst.getUpdateStatus();
+        logger.log('');
+        logger.log(
+          `${theme.dim('NUPST')} ${theme.dim('v' + version)}  ${symbols.warning} ${theme.statusWarning(`Update available: v${updateStatus.latestVersion}`)}`,
+        );
+        logger.log(`  ${theme.dim('Run')} ${theme.command('sudo nupst update')} ${theme.dim('to upgrade')}`);
+      } else {
+        logger.log('');
+        logger.log(
+          `${theme.dim('NUPST')} ${theme.dim('v' + version)}  ${symbols.success} ${theme.success('Up to date')}`,
+        );
+      }
+    } catch (error) {
+      // If version check fails, show at least the current version
+      try {
+        const nupst = this.daemon.getNupstSnmp().getNupst();
+        const version = nupst.getVersion();
+        logger.log('');
+        logger.log(`${theme.dim('NUPST')} ${theme.dim('v' + version)}`);
+      } catch (_innerError) {
+        // Silently fail if we can't even get the version
+      }
+    }
+  }
+
   public async getStatus(debugMode: boolean = false): Promise<void> {
     try {
       // Enable debug mode if requested
@@ -144,7 +183,10 @@ WantedBy=multi-user.target
         this.daemon.getNupstSnmp().enableDebug();
       }
 
-      // Check if config exists first
+      // Display version and update status first
+      await this.displayVersionInfo();
+
+      // Check if config exists
       try {
         await this.checkConfigExists();
       } catch (error) {