fixed attribution of .fa-hand-pointer cursor color scheme to ordering according to token-drop sequence instead of seat sequence; updates to accomodate this throughout apps.epic.models & .views, plus new apps.epic migration; assigned #id_sig_cursor_portal a z-index value corresponding to a high position but still beneath the #id_tray apparatus; minor semantic reordering of INSTALLED_APPS in core.settings

src/static_src/scss/_card-deck.scss

@@ -507,7 +507,7 @@ html:has(.sig-backdrop) {
     position: fixed;
     inset: 0;
     pointer-events: none;
-    z-index: 9999;
+    z-index: 200;   // above sig-overlay (120), below tray (310)
     overflow: visible;
 }