MagicWeather: upgrade to React Native 0.85.3 (#1769)

## Summary

- Upgrades the MagicWeather example app from React Native 0.83 →
**0.85.3**, bumps `react-native-purchases` to `^10.1.0` and
`react-native-safe-area-context` to `^5.7.0`, and aligns React +
`@react-native/*` peer/dev deps to the 0.85.3 template.
- Switches `jest.config.js` to the new mandatory
`@react-native/jest-preset` (the bare `'react-native'` preset is removed
in 0.85). Realigns `jest` / `@types/jest` to v29 to match the preset's
bundled deps.
- Lets `pod install` apply the legacy-architecture-removal flags RN 0.85
expects on the iOS app target (`-DRCT_REMOVE_LEGACY_ARCH=1` in
`OTHER_CFLAGS`/`OTHER_CPLUSPLUSFLAGS`, `SWIFT_ENABLE_EXPLICIT_MODULES =
NO`).
- Pins the Android Gradle wrapper back to **9.3.1** (the version RN 0.85
ships with) — 9.4.1 bundles kotlin-stdlib 2.3.0 which can't be read by
the Kotlin 2.1.20 compiler used to build the RN gradle plugin.

No source-code changes were needed: nothing in `src/` used the APIs
removed in 0.84/0.85 (`StyleSheet.absoluteFillObject`,
`AccessibilityInfo.setAccessibilityFocus`, etc.), and the
AppDelegate/MainActivity/MainApplication/Podfile already match the 0.85
template.

## Test plan

- [x] `yarn install` clean
- [x] `tsc --noEmit` passes
- [x] `yarn test` passes (no tests defined)
- [x] `bundle exec pod install` on a clean `ios/Pods` (uses prebuilt
RNCore + Hermes V1 + PurchasesHybridCommon 18.4.0)
- [x] iOS `xcodebuild ... -sdk iphonesimulator build` → **BUILD
SUCCEEDED**
- [x] `react-native bundle --platform ios` → bundles cleanly with Metro
v0.84.4
- [x] Android `./gradlew :app:assembleDebug` → **BUILD SUCCESSFUL**
- [x] Run on iOS simulator end-to-end
- [ ] Run on Android emulator end-to-end

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Author: jefago

examples/MagicWeather/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

examples/MagicWeather/ios/MagicWeatherReactNative.xcodeproj/project.pbxproj

@@ -370,13 +370,18 @@
 				);
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
+				OTHER_CFLAGS = (
+					"$(inherited)",
+					"-DRCT_REMOVE_LEGACY_ARCH=1",
+				);
 				OTHER_CPLUSPLUSFLAGS = (
 					"$(OTHER_CFLAGS)",
 					"-DFOLLY_NO_CONFIG",
 					"-DFOLLY_MOBILE=1",
 					"-DFOLLY_USE_LIBCPP=1",
 					"-DFOLLY_CFG_NO_COROUTINES=1",
 					"-DFOLLY_HAVE_CLOCK_GETTIME=1",
+					"-DRCT_REMOVE_LEGACY_ARCH=1",
 				);
 				OTHER_LDFLAGS = (
 					"$(inherited)",
@@ -385,6 +390,7 @@
 				REACT_NATIVE_PATH = "${PODS_ROOT}/../../node_modules/react-native";
 				SDKROOT = iphoneos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "$(inherited) DEBUG";
+				SWIFT_ENABLE_EXPLICIT_MODULES = NO;
 				USE_HERMES = true;
 			};
 			name = Debug;
@@ -442,20 +448,26 @@
 					"\"$(inherited)\"",
 				);
 				MTL_ENABLE_DEBUG_INFO = NO;
+				OTHER_CFLAGS = (
+					"$(inherited)",
+					"-DRCT_REMOVE_LEGACY_ARCH=1",
+				);
 				OTHER_CPLUSPLUSFLAGS = (
 					"$(OTHER_CFLAGS)",
 					"-DFOLLY_NO_CONFIG",
 					"-DFOLLY_MOBILE=1",
 					"-DFOLLY_USE_LIBCPP=1",
 					"-DFOLLY_CFG_NO_COROUTINES=1",
 					"-DFOLLY_HAVE_CLOCK_GETTIME=1",
+					"-DRCT_REMOVE_LEGACY_ARCH=1",
 				);
 				OTHER_LDFLAGS = (
 					"$(inherited)",
 					" ",
 				);
 				REACT_NATIVE_PATH = "${PODS_ROOT}/../../node_modules/react-native";
 				SDKROOT = iphoneos;
+				SWIFT_ENABLE_EXPLICIT_MODULES = NO;
 				USE_HERMES = true;
 				VALIDATE_PRODUCT = YES;
 			};

examples/MagicWeather/jest.config.js

@@ -1,3 +1,3 @@
 module.exports = {
-  preset: 'react-native',
+  preset: '@react-native/jest-preset',
 };

examples/MagicWeather/package.json

@@ -10,32 +10,33 @@
     "test": "jest"
   },
   "dependencies": {
-    "react": "19.2.0",
-    "react-native": "^0.83.0",
-    "react-native-purchases": "^9.6.10",
-    "react-native-safe-area-context": "^5.6.2"
+    "react": "19.2.6",
+    "react-native": "0.85.3",
+    "react-native-purchases": "^10.1.0",
+    "react-native-safe-area-context": "^5.7.0"
   },
   "devDependencies": {
     "@babel/core": "^7.28.6",
     "@babel/preset-env": "^7.28.6",
     "@babel/runtime": "^7.28.6",
-    "@react-native-community/cli": "^20.0.0",
-    "@react-native-community/cli-platform-android": "^20.0.0",
-    "@react-native-community/cli-platform-ios": "^20.0.0",
-    "@react-native/babel-preset": "^0.83.0",
-    "@react-native/eslint-config": "^0.83.0",
-    "@react-native/metro-config": "^0.83.0",
-    "@react-native/typescript-config": "^0.83.0",
-    "@types/jest": "^30.0.0",
+    "@react-native-community/cli": "20.1.3",
+    "@react-native-community/cli-platform-android": "20.1.3",
+    "@react-native-community/cli-platform-ios": "20.1.3",
+    "@react-native/babel-preset": "0.85.3",
+    "@react-native/eslint-config": "0.85.3",
+    "@react-native/jest-preset": "0.85.3",
+    "@react-native/metro-config": "0.85.3",
+    "@react-native/typescript-config": "0.85.3",
+    "@types/jest": "^29.5.13",
     "@types/react": "^19.2.0",
     "@types/react-test-renderer": "^19.1.0",
     "eslint": "^8.19.0",
-    "jest": "^30.2.0",
+    "jest": "^29.6.3",
     "prettier": "2.8.8",
-    "react-test-renderer": "19.2.0",
+    "react-test-renderer": "19.2.6",
     "typescript": "^5.8.3"
   },
   "engines": {
-    "node": ">=20"
+    "node": "^20.19.4 || ^22.13.0 || ^24.3.0 || >= 25.0.0"
   }
 }