fix(dialog): stack PrimeVue overlays and KeybindingPanel context menu above Reka Settings

Settings dialog (now Reka, z-1700 in Phase 3) blocked clicks on nested
PrimeVue Selects/dialogs and the KeybindingPanel context menu (z-1200)
because they rendered below it.

- PrimeVue zIndex modal/overlay/menu/tooltip -> 1800 (above Reka 1700)
- KeybindingPanel ContextMenuContent z-1200 -> z-1800

src/components/dialog/content/setting/KeybindingPanel.vue

@@ -244,7 +244,7 @@
       <ContextMenuPortal>
         <ContextMenuContent
           :style="keybindingOverlayContentStyle"
-          class="z-1200 min-w-56 rounded-lg border border-border-subtle bg-base-background px-2 py-3 shadow-interface"
+          class="z-1800 min-w-56 rounded-lg border border-border-subtle bg-base-background px-2 py-3 shadow-interface"
         >
           <ContextMenuItem
             class="flex cursor-pointer items-center gap-2 rounded-sm px-3 py-2 text-sm text-text-primary outline-none select-none hover:bg-node-component-surface-hovered focus:bg-node-component-surface-hovered data-disabled:cursor-default data-disabled:opacity-50"

src/main.ts

@@ -85,6 +85,12 @@ app.directive('tooltip', Tooltip)
 app
   .use(router)
   .use(PrimeVue, {
+    zIndex: {
+      modal: 1800,
+      overlay: 1800,
+      menu: 1800,
+      tooltip: 1800
+    },
     theme: {
       preset: ComfyUIPreset,
       options: {