添加主题切换、多语言支持

hooks/use-color-scheme.ts

@@ -1 +1,11 @@
-export { useColorScheme } from 'react-native';
+import { useTheme } from "@/context/ThemeContext";
+import { ColorSchemeName } from "react-native";
+
+export function useColorScheme(): ColorSchemeName {
+  try {
+    const { theme } = useTheme();
+    return theme;
+  } catch (e) {
+    return "light";
+  }
+}