Atlas: Landing-Sprachregel + Waypoints + Platzhalter + klima-3d fix

- index.html: 'Sofort probieren' -> 'Simulation starten' (Lehrplan-Request)
- Landing-Klima-3D-Button auf klima-3d (statt game-3d.html)
- waypoints.sql aus lokaler DB regeneriert (152 Waypoints/15 Basen)
- Prod-Migration: easy_language-Spalte in students-Tabelle (additiv)
- Prod-Sync: geo_waypoints 70 -> 152, alle Heli-Missions-Ziele jetzt da
- module_info.klima-3d.page_url = 'modul-klima-3d' (Lehrplan-Hinweis)
- Lehrplan-Platzhalter-Detailseiten deployed: modul-klima-3d,
  modul-erdbeben, modul-energiemix, modul-lieferketten, modul-regenwald

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

App/index.html

@@ -272,7 +272,7 @@
           <div class="sim-card-tags"><span class="sim-tag st1">1. Klasse</span><span class="sim-tag st-time">20 min</span></div>
           <div class="sim-card-cta">
             <a href="modul-klima" class="sim-btn sim-btn-secondary">📖 Mehr erfahren</a>
-            <a href="game-3d.html" class="sim-btn sim-btn-primary">▶ Sofort probieren</a>
+            <a href="klima-3d" class="sim-btn sim-btn-primary">▶ Simulation starten</a>
           </div>
         </div>
       </div>
@@ -286,7 +286,7 @@
           <div class="sim-card-tags"><span class="sim-tag st1">1.–2. Klasse</span><span class="sim-tag st-time">10–35 min</span></div>
           <div class="sim-card-cta">
             <a href="modul-fluss" class="sim-btn sim-btn-secondary">📖 Mehr erfahren</a>
-            <a href="fluss" class="sim-btn sim-btn-primary">▶ Sofort probieren</a>
+            <a href="fluss" class="sim-btn sim-btn-primary">▶ Simulation starten</a>
           </div>
         </div>
       </div>
@@ -300,7 +300,7 @@
           <div class="sim-card-tags"><span class="sim-tag st2">2. Klasse</span><span class="sim-tag st-time">40 min</span></div>
           <div class="sim-card-cta">
             <a href="modul-heli" class="sim-btn sim-btn-secondary">📖 Mehr erfahren</a>
-            <a href="heli-game" class="sim-btn sim-btn-primary">▶ Sofort probieren</a>
+            <a href="heli-game" class="sim-btn sim-btn-primary">▶ Simulation starten</a>
           </div>
         </div>
       </div>
@@ -314,7 +314,7 @@
           <div class="sim-card-tags"><span class="sim-tag st3">3. Klasse</span><span class="sim-tag st-time">25 min</span></div>
           <div class="sim-card-cta">
             <a href="modul-stadt" class="sim-btn sim-btn-secondary">📖 Mehr erfahren</a>
-            <a href="stadt" class="sim-btn sim-btn-primary">▶ Sofort probieren</a>
+            <a href="stadt" class="sim-btn sim-btn-primary">▶ Simulation starten</a>
           </div>
         </div>
       </div>