v0.77.0: per-app open_path for the Megnyitás link

Optional .felhom.yml open_path appended to the open-app URL in dashboard/deploy/app-info
(via .Meta.OpenPath). Empty=bare root. Fixes apps whose UI isn't at / (gokapi /admin, ghost /ghost/).

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

controller/internal/web/templates/dashboard.html

@@ -170,7 +170,7 @@
             {{else}}
                 {{if isOperational .State}}
                     {{$subdomain := index $.Subdomains .Name}}
-                    {{if $subdomain}}<a href="https://{{$subdomain}}.{{$.Domain}}" target="_blank" class="btn btn-sm btn-outline" onclick="event.stopPropagation()">Megnyitás ↗</a>{{end}}
+                    {{if $subdomain}}<a href="https://{{$subdomain}}.{{$.Domain}}{{.Meta.OpenPath}}" target="_blank" class="btn btn-sm btn-outline" onclick="event.stopPropagation()">Megnyitás ↗</a>{{end}}
                     <button class="btn btn-sm btn-warning" onclick="stackAction(event, '{{.Name}}', 'restart')">↻</button>
                     <button class="btn btn-sm btn-danger" onclick="stackAction(event, '{{.Name}}', 'stop')">■</button>
                 {{else}}