Add systemd timer fallback when crontab unavailable

- Try crontab first, fall back to systemd timer
- If neither available, still deploy script but warn user
- Update frontend to show scheduling method (cron/systemd/none)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/components/DiscoveryResults.jsx

@@ -409,9 +409,17 @@ export default function DiscoveryResults({ scanId, scan, analysis, devMode, onCo
                         </>
                       )}
                     </div>
-                    {result.deployment.cronjob && (
-                      <div className="mt-1 text-xs text-slate-500 font-mono">
-                        Cronjob: {result.deployment.cronjob}
+                    {result.deployment.scheduling && (
+                      <div className="mt-1 text-xs text-slate-500">
+                        {result.deployment.scheduling.method === 'crontab' && (
+                          <span className="font-mono">Cron: {result.deployment.scheduling.info}</span>
+                        )}
+                        {result.deployment.scheduling.method === 'systemd' && (
+                          <span>Systemd timer: {result.deployment.scheduling.info}</span>
+                        )}
+                        {result.deployment.scheduling.method === 'none' && (
+                          <span className="text-amber-400">{result.deployment.scheduling.warning}</span>
+                        )}
                       </div>
                     )}
                   </div>