Django Channels role-select sprint: turn_changed, roles_revealed, role_select_start consumer handlers; WS URL changed from room_slug to room_id UUID; TableSeat model - room, gamer, slot_number, role, role_revealed, seat_position fields; Room.table_status field with ROLE_SELECT, SIG_SELECT, IN_GAME choices; migration 0006_table_status_and_table_seat; pick_roles and select_role views; _role_select_context helper; _notify_turn_changed, _notify_roles_revealed, _notify_role_select_start notifiers; all gate-mutation views now call _notify_gate_update; ChannelsFunctionalTest base class with serve_static, screenshot, dump helpers; SQLite TEST NAME set to file path for ChannelsLiveServerTestCase; InMemoryChannelLayer added to test CHANNEL_LAYERS settings; FT 5 and FT 6 now passing - active seat arc and turn advance via WS, no page refresh; room.js, gatekeeper.js, role-select.js added to apps/epic/static; applets.js, game-kit.js, dashboard.js, wallet.js relocated to app-scoped static dirs; room.html: hex table, table-seat arcs, card-stack, inventory panel, role-card hand, WS scripts; _room.scss: room-shell flex layout, .table-hex polygon clip-path, .table-seat and .seat-card-arc, .card-stack eligible/ineligible states, .card flip animation, .inv-role-card stacked hand, .role-select-backdrop; gear btn and room menu always position: fixed; 375 tests, 0 skipped

src/templates/apps/gameboard/_partials/_gatekeeper.html

@@ -1,8 +1,6 @@
 <div
     id="id_gate_wrapper"
-    hx-get="{% url 'epic:gate_status' room.id %}"
-    hx-trigger="every 3s [!document.activeElement.closest('#id_gate_wrapper')]"
-    hx-swap="outerHTML"
+    data-gate-status-url="{% url 'epic:gate_status' room.id %}"
 >
     <div class="gate-overlay">
         <div class="gate-modal" role="dialog" aria-label="Gatekeeper">
@@ -83,7 +81,10 @@
                 {% endfor %}
             </div>
             {% if room.gate_status == 'OPEN' %}
-                <button class="launch-game-btn btn btn-primary btn-xl">PICK ROLES</button>
+                <form method="POST" action="{% url 'epic:pick_roles' room.id %}" style="display:contents">
+                    {% csrf_token %}
+                    <button type="submit" class="launch-game-btn btn btn-primary btn-xl">PICK ROLES</button>
+                </form>
             {% endif %}
 
             {% if request.user == room.owner %}