fix(settings): render restart button unconditionally

The Vezérlő újraindítása card was accidentally placed inside the
{{if .RetrievalPassword}} block, so it was hidden whenever no retrieval
password is set (e.g. the demo). Moved it outside so the self-serve restart
is always available. Found during live verification of v0.70.0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

controller/internal/web/templates/settings.html

@@ -1115,8 +1115,9 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
         </div>
     </div>
 </div>
+{{end}}
 
-<!-- Section: Controller restart (self-serve) -->
+<!-- Section: Controller restart (self-serve) — always available (not gated on RetrievalPassword) -->
 <div class="settings-card">
     <h3>Vezérlő újraindítása</h3>
     <p class="settings-card-desc">
@@ -1126,7 +1127,6 @@ window.__registeredPaths=[{{range .StoragePaths}}{{if .Path}}"{{.Path}}",{{end}}
     <div id="restart-status"></div>
     <button type="button" class="btn btn-outline" id="btn-restart-controller" onclick="restartController()">Vezérlő újraindítása</button>
 </div>
-{{end}}
 
 <script>
 function restartController() {