refactor: unify clipboard copy flow across desktop/web/vscode runtimes (#458)

* fix: prevent copying incomplete diagnostics report

* refactoring: clipboard writes to unified cross-runtime fallback helper

packages/ui/src/components/layout/ContextSidebarTab.tsx

@@ -8,6 +8,7 @@ import { useThemeSystem } from '@/contexts/useThemeSystem';
 import { generateSyntaxTheme } from '@/lib/theme/syntaxThemeGenerator';
 import { useConfigStore } from '@/stores/useConfigStore';
 import { useSessionStore } from '@/stores/useSessionStore';
+import { copyTextToClipboard } from '@/lib/clipboard';
 
 type SessionMessage = { info: Message; parts: Part[] };
 
@@ -303,8 +304,8 @@ export const ContextPanelContent: React.FC = () => {
   }, []);
 
   const handleCopyRawMessage = React.useCallback(async (messageId: string, value: string) => {
-    try {
-      await navigator.clipboard.writeText(value);
+    const result = await copyTextToClipboard(value);
+    if (result.ok) {
       setCopiedRawMessageId(messageId);
       if (copyResetTimeoutRef.current !== null) {
         window.clearTimeout(copyResetTimeoutRef.current);
@@ -313,7 +314,7 @@ export const ContextPanelContent: React.FC = () => {
         setCopiedRawMessageId((prev) => (prev === messageId ? null : prev));
         copyResetTimeoutRef.current = null;
       }, 2000);
-    } catch {
+    } else {
       setCopiedRawMessageId(null);
     }
   }, []);

packages/ui/src/components/layout/SidebarFilesTree.tsx

@@ -45,6 +45,7 @@ import { useUIStore } from '@/stores/useUIStore';
 import { useGitStatus } from '@/stores/useGitStore';
 import { useDirectoryShowHidden } from '@/lib/directoryShowHidden';
 import { useFilesViewShowGitignored } from '@/lib/filesViewShowGitignored';
+import { copyTextToClipboard } from '@/lib/clipboard';
 import { cn } from '@/lib/utils';
 import { opencodeClient } from '@/lib/opencode/client';
 
@@ -286,8 +287,13 @@ const FileRow: React.FC<FileRowProps> = ({
               )}
               <DropdownMenuItem onClick={(e) => {
                 e.stopPropagation();
-                void navigator.clipboard.writeText(node.path);
-                toast.success('Path copied');
+                void copyTextToClipboard(node.path).then((result) => {
+                  if (result.ok) {
+                    toast.success('Path copied');
+                    return;
+                  }
+                  toast.error('Copy failed');
+                });
               }}>
                 <RiFileCopyLine className="mr-2 h-4 w-4" /> Copy Path
               </DropdownMenuItem>