feat(app): FE 骨架协调提交——core 网络层/路由注册/页面桩

- DevEco 6.1 模板工程（API 6.1.1(24)，bundle com.xiangsilian.app）+ INTERNET 权限
- core/：ApiClient（统一信封解包+401 自动刷新重试）/AuthStore（双令牌持久化+
  dev-token 通道+baseUrl 可配）/ContextHolder/ApiTypes —— 全部通过 ArkTS 严格编译
- 七页面注册 main_pages（桩态）；Index 按登录态分流；页面间约定 router 路径跳转
  零 import（并行冲突隔离）
- app/README：CLI 构建门禁命令与代码约定

app/build-profile.json5

@@ -0,0 +1,42 @@
+{
+  "app": {
+    "signingConfigs": [],
+    "products": [
+      {
+        "name": "default",
+        "signingConfig": "default",
+        "targetSdkVersion": "6.1.1(24)",
+        "compatibleSdkVersion": "6.1.1(24)",
+        "runtimeOS": "HarmonyOS",
+        "buildOption": {
+          "strictMode": {
+            "caseSensitiveCheck": true,
+            "useNormalizedOHMUrl": true
+          }
+        }
+      }
+    ],
+    "buildModeSet": [
+      {
+        "name": "debug",
+      },
+      {
+        "name": "release"
+      }
+    ]
+  },
+  "modules": [
+    {
+      "name": "entry",
+      "srcPath": "./entry",
+      "targets": [
+        {
+          "name": "default",
+          "applyToProducts": [
+            "default"
+          ]
+        }
+      ]
+    }
+  ]
+}