chore(workflow): add AI-assisted workflow commands and configurations

Add comprehensive workflow commands for AI-assisted development:
- Claude commands: analyze, clarify, plan
- Kilocode workflows: full feature development lifecycle
- Opencode commands: specification and implementation workflows
- Roo MCP configuration for tool integration

Update .gitignore to exclude .astro build cache directories.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps/frontend/src/pages/about-enchun.astro

@@ -0,0 +1,31 @@
+---
+import Layout from '../layouts/Layout.astro';
+---
+
+<Layout>
+  <section class="about-section">
+    <div class="container">
+      <h1>關於恩群</h1>
+      <div class="prose prose-custom max-w-none">
+        <p>恩群數位行銷有限公司成立於2018年，專注於數位行銷服務。</p>
+        <p>我們擁有豐富的廣告行銷操作經驗，提供全方位行銷解決方案。</p>
+        <!-- Add more content from HTML -->
+      </div>
+    </div>
+  </section>
+</Layout>
+
+<style>
+  .about-section {
+    padding: 40px 0;
+  }
+  .container {
+    max-width: 1200px;
+    margin: 0 auto;
+    padding: 0 20px;
+  }
+  h1 {
+    text-align: center;
+    margin-bottom: 30px;
+  }
+</style>