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>

packages/shared/tailwind.config.v3.js

@@ -0,0 +1,19 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: [
+    '../../apps/backend/src/**/*.{tsx,ts,jsx,js}'
+  ],
+  theme: {
+    extend: {
+      colors: {
+        primary: '#1F3A93',
+        secondary: '#F39C12',
+        accent: '#16A085',
+        background: '#FFFFFF',
+        surface: '#F7FAFC',
+        text: '#1A202C'
+      }
+    }
+  },
+  plugins: []
+};