senior react native / Expo iOS developer needed to fix testflight startup crash

I need a senior React Native / Expo iOS developer to diagnose and fix a TestFlight startup crash in my app, Torchy. The app works in development, but the iOS TestFlight build crashes almost immediately after launch on iOS 26. Tech stack: React Native Expo SDK 54 EAS Build Hermes Expo Router iOS / TestFlight What has already been tested: Multiple TestFlight builds React Native New Architecture disabled Reanimated/worklets-related packages removed or isolated react-native-keyboard-controller removed expo-glass-effect removed Clean EAS builds with cleared cache Expo Doctor passes 18/18 TypeScript passes Production Hermes export passes Clean iOS prebuild passes Even a minimal diagnostic build containing only a React Native View and Text still crashed on physical iOS 26 hardware Crash behavior: TestFlight build launches and crashes almost immediately Crash reports show EXC_CRASH (SIGABRT) Previous reports pointed through React Native fatal/native-module invocation paths I need someone who can: Review the current Expo/EAS/iOS configuration Analyze the crash logs Inspect native dependencies / CocoaPods / generated iOS project Identify the actual root cause Fix the issue without unnecessarily rebuilding or redesigning the app Produce a TestFlight build that successfully launches on physical iOS 26 hardware The app is already built and has a working backend. This is specifically a release/TestFlight startup crash debugging job, not a full app-development project. Experience required: Strong React Native experience Expo SDK / EAS Build iOS native debugging TestFlight crash logs Hermes CocoaPods / native modules Please mention in your proposal if you have previously fixed Expo/React Native apps that worked in development but crashed only in TestFlight or release builds