docs: add automation setup guide and skill documentation

- Add automation.md with Shizuku + u2 service setup steps
- Add automation-skill.md explaining how to use automation features
- Include screenshots for each step (16 images + 3 MIUI-specific)
- Add phone-row CSS class for side-by-side screenshots
- Update sidebar config with Automation section
- Support both English and Chinese versions

Author: stwith

astro.config.mjs

@@ -85,6 +85,22 @@ export default defineConfig({
 						},
 					],
 				},
+				{
+					label: 'Automation',
+					translations: { 'zh-CN': '自动化' },
+					items: [
+						{
+							label: 'Setup',
+							translations: { 'zh-CN': '配置' },
+							slug: 'automation',
+						},
+						{
+							label: 'Automation Skill',
+							translations: { 'zh-CN': '自动化技能' },
+							slug: 'automation-skill',
+						},
+					],
+				},
 			],
 		}),
 	],