feat(hub): settings toggles for funds and dashboard nav

Add show_nav_funds and show_nav_dashboard in hub_settings display prefs to hide top nav entries and redirect direct URL access.

Co-authored-by: Cursor <cursoragent@cursor.com>

manual_trading_hub/static/app.css

@@ -326,6 +326,10 @@ a:hover {
   transition: background 0.15s, color 0.15s, box-shadow 0.15s;
 }
 
+.top-nav a.nav-hidden {
+  display: none !important;
+}
+
 .top-nav a:hover {
   color: var(--text);
   background: var(--panel-hover);
@@ -2176,9 +2180,16 @@ button.btn-sm {
 }
 
 .settings-display-chk {
+  display: flex;
+  align-items: center;
+  gap: 8px;
   font-size: 0.88rem;
 }
 
+.settings-display-chk + .settings-display-chk {
+  margin-top: 8px;
+}
+
 .settings-display-hint {
   margin: 8px 0 0;
   font-size: 0.78rem;