Add Apache-2.0 copyright headers

Insert a standard license header ("Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.") across many source files. Changes are non-functional — only license/header additions to apps/studio components, UI primitives, hooks, mocks, plugins, examples and various package sources to standardize licensing.

Author: hotlong

apps/studio/src/App.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useEffect, useCallback } from 'react';
 import { ObjectStackClient } from '@objectstack/client';
 import { ObjectStackProvider } from '@objectstack/client-react';

apps/studio/src/components/DeveloperOverview.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useEffect, useCallback } from 'react';
 import { useClient } from '@objectstack/client-react';
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";

apps/studio/src/components/ErrorBoundary.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { Component, type ErrorInfo, type ReactNode } from 'react';
 import { AlertCircle, RefreshCw } from 'lucide-react';
 

apps/studio/src/components/MetadataInspector.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useEffect } from 'react';
 import { useClient } from '@objectstack/client-react';
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";

apps/studio/src/components/ObjectApiConsole.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useCallback } from 'react';
 import { useClient } from '@objectstack/client-react';
 import { Badge } from '@/components/ui/badge';

apps/studio/src/components/ObjectDataForm.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useEffect } from 'react';
 import { useClient } from '@objectstack/client-react';
 import { Button } from "@/components/ui/button";

apps/studio/src/components/ObjectDataTable.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useEffect } from 'react';
 import { useClient } from '@objectstack/client-react';
 import { Card, CardContent, CardHeader, CardTitle, CardDescription, CardFooter } from "@/components/ui/card";

apps/studio/src/components/ObjectExplorer.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState } from 'react';
 import { ObjectDataTable } from './ObjectDataTable';
 import { ObjectSchemaInspector } from './ObjectSchemaInspector';

apps/studio/src/components/ObjectSchemaInspector.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useEffect } from 'react';
 import { useClient } from '@objectstack/client-react';
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";

apps/studio/src/components/PackageManager.tsx

@@ -1,3 +1,5 @@
+// Copyright (c) 2025 ObjectStack. Licensed under the Apache-2.0 license.
+
 import { useState, useEffect, useCallback } from 'react';
 import { useClient } from '@objectstack/client-react';
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";