Add physical escape room map, reviews, and website admin

Public:
- /escape-rooms: Leaflet + OpenStreetMap map with marker clustering and a
  searchable list, both built from a cached slim JSON feed
- /escape-rooms/{id}-{slug}: room detail with a mini-map and user reviews
  (rating + title + body, login required)
- /escape-rooms/suggest: visitor submission form with click-to-drop-pin map
  and reCAPTCHA v3; new rooms land as pending

Data:
- EscapeRoom / EscapeRoomReview entities (soft-delete), migration
- app:escaperooms:import-osm console command pulls leisure=escape_game from
  the Overpass API, upserts by (osmType, osmId), skips locked rows;
  --tiled / --area / --bbox options

Admin (new "Website Admin" area, separate from Game Admin):
- src/Website/Controller/AdminEscapeRoomController.php at /admin/escape-rooms:
  status-filtered list, new/edit, publish/hide/reject, delete, review removal
- game admin sidebar extracted into a block and cross-linked

Assets: leaflet + leaflet.markercluster; escaperoom-map and escaperoom-detail
Encore entries.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

templates/game/admin/base.html.twig

@@ -124,6 +124,7 @@
 <div class="admin-shell">
 
     {# ── Sidebar ──────────────────────────────────────────────────────── #}
+    {% block admin_sidebar %}
     <nav class="admin-sidebar">
         <div class="admin-sidebar-title">Game Admin</div>
 
@@ -156,11 +157,15 @@
         </ul>
 
         <div class="admin-sidebar-footer">
+            <a href="{{ path('website_admin_escaperooms') }}" style="color: #64748b; font-size: 0.8rem; text-decoration: none; display: block; margin-bottom: 0.4rem;">
+                Website admin →
+            </a>
             <a href="{{ path('game_dashboard') }}" style="color: #64748b; font-size: 0.8rem; text-decoration: none;">
                 ← Back to game
             </a>
         </div>
     </nav>
+    {% endblock %}
 
     {# ── Content ──────────────────────────────────────────────────────── #}
     <main class="admin-main">