Atlas+Instanzen: Phase B Integration — Wrapper-Mode-Check + Assessment

Logistik + Heli Wrappers von den Instanzen umgebaut:
- Mode-Check (free/teacher_started/locked) direkt aus DB
- Forced-Level-Start bei teacher_started
- Easy-Flag aus students.easy_language
- Locked-Seite mit Sperrhinweis + Cockpit-Link
- Assessment-Calls (started/running/completed) in Heli game.html

Atlas-Arbeit:
- teacher.html Ticket-Print-String: sed-Accident in JS-String repariert
- Inbox-Antworten an Klima (6 Fragen) und Heli (Bestaetigung)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

App/teacher.html

@@ -557,8 +557,7 @@ function printBatchTickets() {
     html += '<div class="ticket-row"><span class="ticket-label">Passwort:</span><span class="ticket-val">'+s.password+'</span></div>';
     html += '<div class="ticket-url">geograsim.at</div></div>';
   });
-  html += '</div><script src="assets/js/version-tag.js" defer></script>
-</body></html>';
+  html += '</div></body></html>';
   w.document.write(html); w.document.close();
 }