fix(desktop): respect local-origin tauri shell for directory access (#391)

* feat: enable local-origin desktop features and copy in terminal support

- Enable arbitrary web loads in desktop web content for TAURI apps.
- Guard directory dialog access behind local-origin origin check.
- Add copy-to-clipboard support for terminal selections via common shortcuts.

* fix: improve initial directory resolution and persistence in directory store

packages/ui/src/components/session/SessionDialogs.tsx

@@ -22,7 +22,7 @@ import { useSessionStore } from '@/stores/useSessionStore';
 import { useDirectoryStore } from '@/stores/useDirectoryStore';
 import { useProjectsStore } from '@/stores/useProjectsStore';
 import { useFileSystemAccess } from '@/hooks/useFileSystemAccess';
-import { isTauriShell } from '@/lib/desktop';
+import { isDesktopLocalOriginActive, isTauriShell } from '@/lib/desktop';
 import { useDeviceInfo } from '@/lib/device';
 import { sessionEvents } from '@/lib/sessionEvents';
 
@@ -129,7 +129,7 @@ export const SessionDialogs: React.FC = () => {
 
         setHasShownInitialDirectoryPrompt(true);
 
-        if (isTauriShell()) {
+        if (isTauriShell() && isDesktopLocalOriginActive()) {
             requestAccess('')
                 .then(async (result) => {
                     if (!result.success || !result.path) {

packages/ui/src/components/session/SessionSidebar.tsx

@@ -1,7 +1,7 @@
 import React from 'react';
 import type { Session } from '@opencode-ai/sdk/v2';
 import { toast } from '@/components/ui';
-import { isDesktopShell, isTauriShell } from '@/lib/desktop';
+import { isDesktopLocalOriginActive, isDesktopShell, isTauriShell } from '@/lib/desktop';
 import {
   DndContext,
   DragOverlay,
@@ -1035,7 +1035,7 @@ export const SessionSidebar: React.FC<SessionSidebarProps> = ({
   );
 
   const handleOpenDirectoryDialog = React.useCallback(() => {
-    if (!tauriIpcAvailable) {
+    if (!tauriIpcAvailable || !isDesktopLocalOriginActive()) {
       sessionEvents.requestDirectoryDialog();
       return;
     }