perf(mp): 移除 Zod 依赖，轻量验证替代 — 包体积 -300KB

- 新增 utils/validate.ts 轻量验证工具（<1KB vs Zod 360KB）
- daily-monitoring: Zod schema → validateNum() 直接验证
- input: Zod schema → num()/validateStr() 直接验证
- config/index.ts: 移除 Zod include 编译配置

效果：总体积 1.8MB→1.5MB(-17%)，pkg-health 分包 432KB→84KB(-81%)

apps/miniprogram/config/index.ts

@@ -33,9 +33,7 @@ export default defineConfig(async (merge) => {
     mini: {
       compile: {
         exclude: [],
-        include: [
-          require.resolve('zod').replace(/[\\/]index\.cjs$/, ''),
-        ],
+        include: [],
       },
       postcss: {
         pxtransform: { enable: true, config: {} },