新增 有家相册 uni-app 前端（uniapp/youjiala，H5 / 微信小程序 / App 三端）

从旧 WebVue 移植的地基部分：
- 登录页（RSA+MD5 密码加密、redirect 回跳、中英文切换）与登录后落地页
- 401 / 403 / 404 错误页 + error-panel 通用外壳（文案走 ErrorPage 语言包）
- 登录守卫双链路：uni.addInterceptor 拦站内跳转，页面级 onShow 复核冷启动深链
- 单一请求链路 common/http.interceptor：JWT 唯一来源、401 并发刷新单例、
  业务异常识别、HTTP 403 跳无权限页
- H5 干净短地址：initRouter 前向 __uniRoutes 追加克隆记录（router/h5-clean-url）
- 路由登记表 router/routes.ts（PAGE_PATHS / pageUrl / PAGE_PERMISSIONS）
  与新增页面四步登记约定（src/md/page-routing.md）
- i18n：uView Pro 语言包 + 后端词条合并，双取值（后端 zh-cn/en，包名 zh-CN/en-US）
- 后端接口层 service/ 与数据模型 data/auto/ 为生成器产物，不手改

不入库的内容：
- 摘除脚手架残留的 Harmony 签名密码（manifest.json signingConfigs 与
  harmony-configs/build-profile.json5 的 keyPassword / storePassword 已置空）
- 忽略 node_modules、dist、unpackage、.hbuilderx、.agents、pnpm-lock.yaml
  及根目录临时截图

uniapp/youjiala/src/locale/lang/en-US.json

@@ -0,0 +1,42 @@
+{
+  "name": "en-US",
+  "LoginForm": {
+    "userLabel": "User ID:",
+    "passwordLabel": "Password:",
+    "loginBut": "Login",
+    "cancelBut": "Cancel",
+    "cultureLabel": "Language:"
+  },
+  "ErrorPage": {
+    "reasonsTitle": "Possible reasons",
+    "fromLabel": "Failed address:",
+    "goLoginBut": "Sign in",
+    "reloginBut": "Sign in again",
+    "goHomeBut": "Back to home",
+    "goBackBut": "Go back",
+    "badge401": "UNAUTHORIZED · Not signed in",
+    "title401": "You need to sign in first",
+    "desc401": "Your session has expired, or you have not signed in yet. Sign in again to continue.",
+    "hint401": "Note: signing out on another device also invalidates this one.",
+    "r401_1": "Session expired: idle for too long, or the access token has expired",
+    "r401_2": "You signed out on another device or tab, so this device was invalidated",
+    "r401_3": "The browser cleared local data (private mode, cleared cache, another browser)",
+    "r401_4": "An administrator just changed your account information (password, phone number)",
+    "badge403": "FORBIDDEN · No permission",
+    "title403": "You have no permission for this page",
+    "desc403": "Your account is fine, but your role / permission group has not been granted this function.",
+    "hint403": "Note: permissions are assigned by administrators and take effect only after signing in again.",
+    "r403_1": "Your role / permission group does not include this function",
+    "r403_2": "The function has not been authorized in the backend, so the entry is visible but won't open",
+    "r403_3": "Permissions were just changed, and your local data still holds the old ones",
+    "r403_4": "Someone shared their link with you, but your account lacks the matching permission",
+    "badge404": "NOT FOUND · Page missing",
+    "title404": "This page does not exist",
+    "desc404": "The address may be wrong, or the page is no longer part of the system.",
+    "hint404": "Note: functions without permission are hidden from the menu, and opening their address lands here.",
+    "r404_1": "The address is misspelled, or was truncated when copied from chat or email",
+    "r404_2": "The function is not exposed in the menu (no such route in the system)",
+    "r404_3": "The page was taken offline or renamed, while your bookmark still holds the old address",
+    "r404_4": "The server just restarted and the menu has not loaded yet — refresh once"
+  }
+}