fix(cli): Refactor logs command to use child_process spawn for real-time log tailing

ts/cli.ts

@@ -131,8 +131,24 @@ export class NupstCli {
    */
   private async logs(): Promise<void> {
     try {
-      const logs = execSync('journalctl -u nupst.service -n 50 -f').toString();
-      console.log(logs);
+      // Use exec with spawn to properly follow logs in real-time
+      const { spawn } = await import('child_process');
+      console.log('Tailing nupst service logs (Ctrl+C to exit)...\n');
+      
+      const journalctl = spawn('journalctl', ['-u', 'nupst.service', '-n', '50', '-f'], {
+        stdio: ['ignore', 'inherit', 'inherit']
+      });
+      
+      // Forward signals to child process
+      process.on('SIGINT', () => {
+        journalctl.kill('SIGINT');
+        process.exit(0);
+      });
+      
+      // Wait for process to exit
+      await new Promise<void>((resolve) => {
+        journalctl.on('exit', () => resolve());
+      });
     } catch (error) {
       console.error('Failed to retrieve logs:', error);
       process.exit(1);