implement staging workflow

app-expo/plugins/withAndroidCleartextTraffic.js

@@ -0,0 +1,32 @@
+// @ts-check
+/**
+ * Toggle Android cleartext HTTP traffic from Expo env.
+ *
+ * Staging may use an IP:port HTTP endpoint while production remains HTTPS.
+ */
+const { withAndroidManifest } = require('@expo/config-plugins');
+
+/**
+ * @param {import('expo/config').ExpoConfig} config
+ * @param {{ enabled?: boolean }} props
+ */
+function withAndroidCleartextTraffic(config, props = {}) {
+  return withAndroidManifest(config, (mod) => {
+    const mainApplication = mod.modResults.manifest.application?.[0];
+
+    if (!mainApplication) {
+      throw new Error(
+        '[withAndroidCleartextTraffic] Main application not found in AndroidManifest.xml.',
+      );
+    }
+
+    mainApplication.$ = mainApplication.$ ?? {};
+    mainApplication.$['android:usesCleartextTraffic'] = props.enabled
+      ? 'true'
+      : 'false';
+
+    return mod;
+  });
+}
+
+module.exports = withAndroidCleartextTraffic;