docs: add comprehensive development plan and quick start guide

Co-authored-by: huangyiirene <7665279+huangyiirene@users.noreply.github.com>

Author: Copilot

README.md

@@ -422,6 +422,12 @@ See our [detailed roadmap](./docs/ROADMAP.md) for upcoming features and release
 
 We welcome contributions! Please read our [Contributing Guide](./CONTRIBUTING.md) for details.
 
+### For Developers
+
+- 📖 [Quick Start for Developers](./docs/QUICK_START_DEV.md) - Get started in 5 minutes
+- 📋 [Development Plan](./docs/DEVELOPMENT_PLAN.md) - Current priorities and roadmap
+- 🌏 [开发计划 (中文)](./docs/DEVELOPMENT_PLAN_CN.md) - Chinese version
+
 ### Development Setup
 
 ```bash
@@ -432,12 +438,15 @@ cd objectui
 # Install dependencies
 pnpm install
 
-# Run tests
-pnpm test
-
 # Build all packages
 pnpm build
 
+# Run the showcase
+pnpm showcase
+
+# Run tests
+pnpm test
+
 # Run documentation site
 pnpm docs:dev
 ```

docs/.vitepress/config.mts

@@ -46,6 +46,15 @@ export default defineConfig({
             { text: 'Interactive Documentation', link: '/guide/interactive-showcase' }
           ]
         },
+        {
+          text: 'Development',
+          items: [
+            { text: 'Quick Start for Developers', link: '/QUICK_START_DEV' },
+            { text: 'Development Plan', link: '/DEVELOPMENT_PLAN' },
+            { text: '开发计划 (中文)', link: '/DEVELOPMENT_PLAN_CN' },
+            { text: 'Contributing Guide', link: '/CONTRIBUTING' }
+          ]
+        },
         {
           text: 'Core Concepts',
           items: [