fix(ui): remove portal spacer and fix terminal toggle padding (#9728)

packages/app/src/components/session/session-header.tsx

@@ -217,9 +217,9 @@ export function SessionHeader() {
                   title={language.t("command.terminal.toggle")}
                   keybind={command.keybind("terminal.toggle")}
                 >
-                  <Button
+              <Button
                     variant="ghost"
-                    class="group/terminal-toggle size-6 p-0"
+                    class="group/terminal-toggle size-8 rounded-md"
                     onClick={() => view().terminal.toggle()}
                   >
                     <div class="relative flex items-center justify-center size-4 [&>*]:absolute [&>*]:inset-0">

packages/app/src/components/titlebar.tsx

@@ -107,10 +107,8 @@ export function Titlebar() {
         </TooltipKeybind>
         <div id="opencode-titlebar-left" class="flex items-center gap-3 min-w-0 px-2" />
         <div class="flex-1 h-full" data-tauri-drag-region />
-        <div id="opencode-titlebar-right" class="flex items-center gap-3 shrink-0" />
-        <Show when={reserve()}>
-          <div class="w-[120px] h-full shrink-0" data-tauri-drag-region />
-        </Show>
+        <div id="opencode-titlebar-right" class="flex items-center gap-3 shrink-0 flex-1 justify-end" />
+
       </div>
       <div class="absolute inset-0 flex items-center justify-center pointer-events-none">
         <div id="opencode-titlebar-center" class="pointer-events-auto" />