Options button icon: mynaCog -> mynaConfigVertical

Manage connections keeps the cog; the global options gear gets the vertical
sliders icon.

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

ui/src/app/icons.ts

@@ -11,6 +11,7 @@ import {
   mynaChevronDown,
   mynaChevronRight,
   mynaCog,
+  mynaConfigVertical,
   mynaEdit,
   mynaFile,
   mynaFilePlus,
@@ -38,6 +39,7 @@ export const APP_ICONS = {
   mynaChevronDown,
   mynaChevronRight,
   mynaCog,
+  mynaConfigVertical,
   mynaEdit,
   mynaFile,
   mynaFilePlus,

ui/src/app/tab-bar/tab-bar.ts

@@ -91,7 +91,7 @@ const CONCURRENCY_CHOICES = [2, 3, 4, 6, 8] as const;
         title="Options"
         class="grid size-6 place-items-center rounded-md text-muted-foreground electrobun-webkit-app-region-no-drag hover:bg-accent hover:text-foreground"
       >
-        <ng-icon name="mynaCog" size="0.95rem" />
+        <ng-icon name="mynaConfigVertical" size="0.95rem" />
       </button>
 
       @if (settingsOpen()) {