feat(cases): 新增智慧农业案例并优化政府案例数据

- 新增农业种植灌溉信息化建设咨询项目案例
- 更新政府案例：添加关键成果数据、优化客户评价
- 同步更新测试用例和页面组件

src/lib/constants/index.ts

@@ -5,3 +5,5 @@ export { SERVICES } from './services';
 export { PRODUCTS } from './products';
 export { NEWS, type NewsItem, type NewsCategory } from './news';
 export { CASES } from './cases';
+export { TEAM_MEMBERS, type TeamMember } from './team';
+export { METHODOLOGY, type MethodologyPhase } from './methodology';