chore(deps): 移除游离 npm 锁文件，依赖对齐 SDK 57 期望版本

仓库跟踪的是 yarn.lock（v1 格式），但工作区多出一份未跟踪的
package-lock.json。两份锁文件并存会让 EAS Build / CI 依据锁文件
推断错包管理器，进而安装出错误的依赖树，故删除该游离文件。

同时执行 npx expo install --fix，将 8 个包对齐到 SDK 57 期望版本
（expo ~57.0.22、expo-router ~57.0.21、react-native 0.86.3 等），
expo-doctor 由 19/21 恢复为 21/21 全通过。顺带接入 expo-splash-screen
供启动屏使用（配置见后续提交）。

expo 的版本号由 ^57.0.21 规范化为 ~57.0.22：Expo 官方约定用波浪号，
只放行补丁位更新，避免次版本漂移破坏原生兼容。

package.json

@@ -5,16 +5,17 @@
   "dependencies": {
     "@expo/vector-icons": "^15.0.2",
     "@react-native-async-storage/async-storage": "2.2.0",
-    "expo": "57.0.21",
-    "expo-blur": "~57.0.2",
-    "expo-constants": "~57.0.12",
-    "expo-font": "~57.0.1",
-    "expo-linear-gradient": "~57.0.1",
-    "expo-linking": "~57.0.6",
-    "expo-router": "~57.0.14",
+    "expo": "~57.0.22",
+    "expo-blur": "~57.0.3",
+    "expo-constants": "~57.0.18",
+    "expo-font": "~57.0.4",
+    "expo-linear-gradient": "~57.0.2",
+    "expo-linking": "~57.0.10",
+    "expo-router": "~57.0.21",
+    "expo-splash-screen": "~57.0.9",
     "expo-status-bar": "~57.0.1",
     "react": "19.2.3",
-    "react-native": "0.86.2",
+    "react-native": "0.86.3",
     "react-native-safe-area-context": "~5.7.0",
     "react-native-screens": "~4.26.0",
     "react-native-svg": "15.15.4"