Show target dropdown before message selection

backend/00-router.go

@@ -65,13 +65,12 @@ func renderShell(w http.ResponseWriter, active, readingPane string) {
     <div class="read-body">%s</div>
   </section>
   <section class="pane pane-read pane-target" id="read-target">
-    <div class="pane-head">Zielkopie</div>
-    <div class="read-body"><div class="ef-empty">Nachricht waehlen.</div></div>
+    %s
   </section>
 </div>
 <footer class="statusbar"><span id="mig-status"
     hx-get="/migrate/status" hx-trigger="every 3s" hx-swap="innerHTML">bereit</span></footer>
-</body></html>`, active, readingPane)
+</body></html>`, active, readingPane, renderInitialTargetPane())
 }
 
 // --- Stubs fuer die noch nicht gebauten Handler (TODO Codex) ---