refactor: upgrade React Native to 0.85.3 (React 19)

[esaugomez31]

Summary

Upgrades React Native from 0.76.9 to 0.85.3, React from 18.3.1 to 19.2.3, and the reanimated stack from 3.16.7 to 4.3.1 (with the new react-native-worklets 0.8.0 dependency split). Required to keep the iOS app on a supported toolchain (Apple App Store iOS 26 SDK requirement).

Stack delta

• React Native: 0.76.9 → 0.85.3
• React / react-dom: 18 → 19.2.3 (+ react-test-renderer 19.2.3)
• @testing-library/react-native: 12.x → 13.3.3
• react-native-reanimated: 3.16.7 → 4.3.1
• react-native-worklets: NEW 0.8.0 (split out of reanimated v4)
• react-native-gesture-handler: 2.25 → 2.31.2
• react-native-screens: ≥4.0 <4.5 → ≥4.25 <4.26
• react-native-camera-kit: 16.x → 18.x (16.x C++ codegen breaks on RN 0.85)
• react-native-svg: 15.8.0 → 15.15.5 (ImageResponseObserver API change in RN 0.84+)
• react-native-view-shot: 4.x → 5.x (RCTScrollView removed in RN 0.84+)
• @react-navigation/{native,stack,bottom-tabs}: 6.x → 7.x (required by screens 4.25 + Fabric)
• @react-navigation/elements: 1.x → 2.x
• @react-native-community/slider: 4.5.7 → 5.2.0 (required for storybook bundle on RN 0.85)
• @react-native/{babel,jest,codegen,metro-config}-preset: 0.76.x → 0.85.3
• @types/react: ^19.2.15
• @breeztech/breez-sdk-spark-react-native: 0.13.2-dev3 → 0.15.0 (16 KB page-size compliance + real-time TokenTransactionEvent)
• Gradle: 8.10.2 → 8.13, compileSdkVersion 35 → 36

Notable changes by area

iOS build

• Build React-Core from source (RCT_USE_PREBUILT_RNCORE=0) until RNFirebase supports the prebuilt binary (RN 0.84+)
• Downgrade non-modular include errors to warnings for all pod targets (use_frameworks! + static linkage)
• Register RCTAppDependencyProvider in AppDelegate so Fabric discovers third-party native components at runtime
• Patch react-native-camera-kit iOS 26 deferred-start APIs behind #if compiler(>=6.2) for pre-Xcode 26 compatibility

Android build

• Gradle 8.13 + compileSdk 36 (targetSdk stays at 35)
• Jest config switched to @react-native/jest-preset + worklets resolver

Source adaptations

• StyleSheet.absoluteFillObject → absoluteFill (removed in 0.85)
• tabBarTestID → tabBarButtonTestID (renamed in bottom-tabs v7)
• ViewShot ref typed as ViewShotRef (react-native-view-shot v5)
• reanimated v4 native API migration in galoy-slider-button (Gesture.Pan, runOnJS in worklet) and pagination-item (SharedValue import path)
• React 19 stricter useRef / RefObject typings adapted in use-clipboard, use-geetest-captcha, amount-input-modal, use-screenshot, use-receive-carousel, header-back-control
• @rn-vui/themed Input ref bug worked around with new InputRef type at app/types/themed-input.ts (linked open issues in code)
• useDeviceColorScheme() now guards the unspecified value React Native 0.85 surfaces (theme fallback)
• use-conversion-overlay-focus ref param narrowed to a focusable interface so test mocks no longer need an as unknown as InputRef cast

Amount input modal

• Replaced @gorhom/bottom-sheet with React Native's built-in Modal for this screen. The library silently fails to render under reanimated v4 + RN 0.85; the upstream rework targeting that combo is open but not merged (refs in the modal file). Will switch back once gorhom v6 ships. Trade-off: lose the swipe-down gesture (tap-on-backdrop closes instead).

Self-custodial Receive — duplicate invoice guard

• Fixed a latent race that generated the Lightning invoice twice on mount (visible flicker as the second replaced the first). Pre-existing in code but only became reliably noticeable after the React 19 upgrade, which shifted when usePriceConversion emits its first refresh — now lands mid-flight instead of before/after the SDK call. Fix: stabilise convertMoneyAmount via ref so generateRequest keeps its identity across price refreshes, plus a Loading guard against any future overlap. Regression test added.

Self-custodial Breez SDK upgrade (0.13.2-dev3 → 0.15.0)

• Closes the 16 KB ELF alignment gap tracked in fix(android): Support 16 KB memory page sizes (Google Play deadline May 31, 2026) #3771: the Breez SDK shim binary (libbreeztech-breez-sdk-spark-react-native.so) was the single library shipping with 4 KB alignment, which fails Google Play's new 16 KB page-size requirement. Upstream fix in breez/spark-sdk#814 (merged 2026-04-21) added the -Wl,-z,max-page-size=16384 linker flag. Verified post-bump via the official AOSP check_elf_alignment.sh script: all 36 libraries in arm64-v8a now report ALIGNED (2**14 = 16 KB).
• Brings the real-time TokenTransactionEvent (closes breez/spark-sdk#826), allowing the app to surface incoming token payments without forced syncs. The manual syncWallet workarounds previously needed to materialize token balances on receive/convert have been removed from use-sdk-lifecycle, use-auto-convert-listener, and the convert bridge, along with their assertion-level tests.

Self-custodial backup nudge — account-switch flash guard

• Fixed a flash of the "Secure your funds" modal when switching between SC accounts (the destination account's modal-eligibility was evaluated against the previous account's stale wallet state for ~1–2s). Pre-existing race surfaced by React 19 + RN 0.85 render scheduling. Two-part fix: (1) useSdkLifecycle now resets status to Loading and clears wallets synchronously the moment activeSelfCustodialAccountId changes, closing the stale-render window; (2) useBackupNudgeState gates modal/banner visibility behind activeWallet.isReady as defense in depth. Regression test added.

Tests

• Updated mocks for testing-library 13 (Linking / AppState ESM shape, removed deprecated react-hooks import paths)
• useDerivedValue and Reanimated.View mocks brought up to the v4 surface
• Per-spec adaptations for the new dismiss-and-flush flow of the native modal
• Test helper ContextForScreen defaults to headerShown: false (navigation v7 HeaderSearchBar requires full navigation context)
• Added addListener to useNavigation mock in conversion-details-screen (required by navigation v7)
• Polyfill window.dispatchEvent in auto-convert-listener-mount spec (React 19 error reporting)
• receive.spec renders with headerShown enabled to preserve NFC header button tests

Dependencies

• Rebased on main which includes chore(ci): upgrade blink-mobile to Node 24 #3787 (CI Node bump to 24.13.0, required by the conversion-details-screen suite under React 19 + reanimated v4) and ci: fix iOS archive with Xcode 26.5 #3790 (Xcode 26.5 fmt consteval fix — keeps fmt on C++17 while letting RNReanimated use the C++20 that RN/Yoga now require).
• Includes the Xcode 26.5 toolchain bump via rebase.

[esaugomez31]

• refactor: upgrade React Native to 0.85.3 (React 19)  #3781 👈 (View in Graphite)
• main

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[grimen]

LGTM