Sig select: _card-deck.scss extract, WS cursor fixes, own-role indicators, role icon refresh

- New _card-deck.scss: sig select styles moved out of _room.scss + _game-kit.scss
- sig-select.js: 3 WS bug fixes — thumbs-up deferred to window.load (layout settled
  before getBoundingClientRect), hover cursor cleared for all cards on reservation
  (not just the reserved card), applyHover guards against already-reserved roles
- Own-role indicators: gamer now sees their own role-coloured card outline + thumbs-up
- Reservation glow: replaced blurry role+ninUser double-shadow with crisp 2px outline
- Gravity qualifier: Graven text set to --terUser (matches Leavened/--quiUser pattern)
- Role card SVGs refreshed; starter-role-Blank removed
- FTs + Jasmine specs extended for sig select WS behaviour
- setup_sig_session management command for multi-browser manual testing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/apps/lyric/urls.py

@@ -5,6 +5,7 @@ from . import views as lyric_views
 urlpatterns = [
     path('send_login_email', lyric_views.send_login_email, name='send_login_email'),
     path('login', lyric_views.login, name='login'),
-    path('logout', auth_views.LogoutView.as_view(next_page='/'), name='logout')
+    path('logout', auth_views.LogoutView.as_view(next_page='/'), name='logout'),
+    path('dev-login/<str:session_key>/', lyric_views.dev_login, name='dev_login'),
 ]