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/tailwind.config.mjs

@@ -0,0 +1,11 @@
+import sharedConfig from '@enchun/shared/tailwind-config'
+
+const config = {
+  ...sharedConfig,
+  content: [
+    './src/**/*.{astro,tsx,ts,jsx,js,mdx}',
+    ...sharedConfig.content
+  ]
+};
+
+export default config;