feat: 添加员工门户项目及相关后端改造

- 新增 hzhub-portal-employee 员工门户前端项目（基于 Vue3 + Element Plus）
- 后端登录接口增加返回 nickName 字段
- 移除 KnowledgeInfoController 的 @SaCheckPermission 注解
- 删除 hzhub-portal-company 旧门户项目
- 更新项目文档和架构说明
- 添加后台运行管理脚本（start-all.sh / status-all.sh / stop-all.sh）
- 更新 docker-compose 配置

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hzhub-portal-employee/tsconfig.app.json

@@ -0,0 +1,19 @@
+{
+  "extends": "@vue/tsconfig/tsconfig.dom.json",
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["src/*"]
+    },
+    "typeRoots": ["./node_modules/@types", "./types"],
+    /* Linting */
+    "strict": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "esModuleInterop": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["src/**/*.ts", "src/**/*.tsx", "src/**/*.vue", "types/**/*.d.ts"]
+}