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/app_info.html

@@ -10,7 +10,7 @@
         {{if .Stack.Deployed}}
             <span class="stack-state-badge state-{{stateColor .Stack.State}}">{{stateLabel .Stack.State}}</span>
             {{if .Stack.Orphaned}}<span class="badge badge-orphaned">Elavult</span>{{end}}
-            {{if .EffectiveSubdomain}}<a href="https://{{.EffectiveSubdomain}}.{{.Domain}}" target="_blank" class="btn btn-sm btn-outline">Megnyitás ↗</a>{{end}}
+            {{if .EffectiveSubdomain}}<a href="https://{{.EffectiveSubdomain}}.{{.Domain}}{{.Meta.OpenPath}}" target="_blank" class="btn btn-sm btn-outline">Megnyitás ↗</a>{{end}}
             <a href="/stacks/{{.Stack.Name}}/logs" class="btn btn-sm btn-outline">Napló</a>
             {{if .Stack.Orphaned}}
                 <button class="btn btn-sm btn-danger" onclick="deleteOrphanStack('{{.Stack.Name}}')">Törlés</button>