docs: enhance documentation with examples and fix package names

- Fix incorrect package names (@ccw/cli, @anthropic/claude-code-workflow) to claude-code-workflow
- Add workflow examples page with 8 practical artifact samples
- Optimize sidebar navigation with emoji icons and second-level grouping
- Add usage examples to commands and skills documentation
- Update qa/issues.md with current status
- Sync Chinese documentation changes

docs/.vitepress/config.ts

@@ -207,6 +207,7 @@ export default defineConfig({
           items: [
             { text: 'Overview', link: '/workflows/' },
             { text: '4-Level System', link: '/workflows/4-level' },
+            { text: 'Examples', link: '/workflows/examples' },
             { text: 'Best Practices', link: '/workflows/best-practices' },
             { text: 'Teams', link: '/workflows/teams' }
           ]