feat: Add universal victory celebration modal, chamber item requirements, and fix broom & cauldron displays

app/templates/cryptex.html

@@ -19,8 +19,40 @@
         Nicht das Schloss selbst, nicht das alte Pergament, nicht die Glasphiole – welches Instrument aus Holz und Phönixfeder schlägt die Funken?«
         </em>
     </div>
+
+    <!-- Felix Felicis Interactive Clue -->
+    <div style="text-align: center; margin-top: 0.8rem;">
+        <button type="button" class="btn-subtle" onclick="useFelixFelicisHint()" style="border-color: #ffd700; color: #ffd700; font-size: 0.95rem;">
+            🍀 Felix Felicis Glücks-Eingebung einnehmen 🧪
+        </button>
+    </div>
 </div>
 
+{% if is_locked and lock_info %}
+<div class="chamber-lock-banner">
+    <div class="chamber-lock-icon">🔒</div>
+    <h2 class="chamber-lock-title">Kammer Versiegelt!</h2>
+    <p class="chamber-lock-desc">
+        {{ lock_info.reason }}
+    </p>
+    <div class="chamber-req-box">
+        <div class="chamber-req-icon">{{ lock_info.item_icon }}</div>
+        <div class="chamber-req-info">
+            <strong>{{ lock_info.item_name }}</strong>
+            <span>Erforderlich aus: {{ lock_info.from_chamber }}</span>
+        </div>
+    </div>
+    <div class="chamber-lock-actions">
+        <a href="{{ lock_info.from_url }}" class="btn-magical">
+            ➔ Zu {{ lock_info.from_chamber }} gehen
+        </a>
+        <a href="?alohomora=1" class="alohomora-link">
+            ✨ Zauberspruch »Alohomora« wirken (Prüfung für Spielleiter / Tester freischalten)
+        </a>
+    </div>
+</div>
+{% endif %}
+
 <div class="cryptex-container">
     <!-- Feedback Toast -->
     <div id="cryptexFeedback" style="display: none; padding: 0.6rem 1rem; border-radius: 8px; font-weight: bold; text-align: center; width: 100%;">