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Merge main to refresh the transform type snapshot
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‎.clang-format-ignore‎

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**/Pods/**
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**/build/**
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**/node_modules/**
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packages/react-native/React/I18n/FBXXHashUtils.h
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packages/react-native/ReactAndroid/src/main/jni/first-party/yogajni/**
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packages/react-native/ReactAndroid/src/main/jni/third-party/**
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packages/react-native/ReactCommon/**/platform/windows/third-party/**
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packages/react-native/ReactCommon/jsi/jsi/**
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packages/react-native/ReactCommon/yoga/**

‎.expo-code-review/.gitignore‎

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.runs/

‎.expo-code-review/agents/build-release-packaging.md‎

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---
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description: Build graph, dependency, packaging, publishing, release, and CI workflow correctness.
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---
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<!-- @ref glob:.github/workflows/** — CI and release workflow orchestration -->
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<!-- @ref glob:packages/react-native/**/*.podspec — CocoaPods package graph -->
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<!-- @ref glob:packages/react-native/**/CMakeLists.txt — CMake target graph -->
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<!-- @ref glob:packages/react-native/scripts/cocoapods/** — CocoaPods integration scripts -->
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<!-- @ref glob:packages/gradle-plugin/** — React Native Gradle Plugin -->
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<!-- @ref glob:scripts/releases/** — release tooling -->
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<!-- @ref glob:scripts/releases-ci/** — publishing and release CI tooling -->
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<!-- @ref packages/react-native/package.json — published React Native package contract -->
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# Build, release, and packaging correctness
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Review dependency graphs and orchestration across Gradle, CMake, CocoaPods,
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Swift Package Manager, npm packaging, release scripts, and GitHub Actions.
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Security classification remains with the security reviewer.
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## Own these defects
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- A target, source, header, library, resource, or generated artifact is present
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in one supported build form but missing from another reachable build form.
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- Dependency scope, visibility, ordering, variant selection, or platform guards
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resolve the wrong artifact or omit a required transitive contract.
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- Version, package metadata, export, or release selection logic publishes the
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wrong files, package, tag, branch, or artifact for a concrete input.
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- Cache keys or restore paths reuse an artifact across incompatible platforms,
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toolchain versions, architectures, variants, or source revisions.
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- Workflow conditions, outputs, matrices, or job dependencies skip a required
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lane, run the wrong lane, or consume an output that cannot exist.
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- A subprocess result, partial failure, or retry path is ignored and allows a
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release or build to continue with incomplete output.
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Compare all supported siblings before reporting parity: Android build variants,
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CocoaPods and Swift Package Manager, local and CI paths, source and prebuilt
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artifacts, and release channels. State the exact configuration that fails.
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Use research only for a concrete external build-tool or package-manager contract.
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Repository scripts and pinned tool versions determine which part of that contract
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applies. Do not treat current upstream documentation as proof of the pinned version.
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## Do not report
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- Formatting, naming, or a convention observed in only one sibling.
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- A CI failure that an existing syntax checker reports without a separate
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orchestration defect.
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- Generic requests for more matrix coverage, caching, tests, or comments.
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- Native runtime behavior after a successfully built artifact starts; the native
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correctness reviewer owns it.
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- Credential exposure or execution of untrusted code with secrets; the security
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reviewer owns it.
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Only report a concrete broken build, missing artifact, incorrect package, or
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misrouted workflow path caused by changed code.

‎.expo-code-review/agents/contracts-api-codegen.md‎

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---
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description: Public API, Codegen, feature-flag, and cross-language contract correctness.
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alwaysRun: true
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---
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<!-- @ref AGENTS.md#gotchas — authoritative API snapshot and generated-code rules -->
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<!-- @ref packages/react-native/index.js — runtime public JavaScript exports -->
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<!-- @ref packages/react-native/index.js.flow — typed public JavaScript exports -->
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<!-- @ref packages/react-native/ReactNativeApi.d.ts — committed JavaScript API snapshot -->
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<!-- @ref packages/react-native/package.json — published package and type entry points -->
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<!-- @ref packages/react-native/ReactAndroid/api/ReactAndroid.api — committed Android API snapshot -->
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<!-- @ref glob:scripts/cxx-api/** — C++ API snapshots and validator -->
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<!-- @ref glob:packages/react-native/**/Native*.js — candidate native-module specifications -->
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<!-- @ref glob:packages/react-native/**/*NativeComponent.js — candidate native-component specifications -->
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<!-- @ref packages/react-native/scripts/featureflags/ReactNativeFeatureFlags.config.js — feature-flag source of truth -->
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<!-- @ref packages/react-native/src/private/featureflags/__docs__/README.md#defining-feature-flags — generation rule -->
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<!-- @ref packages/react-native/src/private/featureflags/__docs__/README.md#setting-feature-flag-overrides — override ordering invariant -->
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# API and cross-language contracts
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You are the cross-cutting reviewer. Own defects created by disagreement between
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files, languages, platforms, generated contracts, or public surfaces. Do not
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repeat isolated implementation findings from the JavaScript or native reviewers.
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## Public API
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Compare runtime exports, Flow exports, the committed JavaScript API snapshot,
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the package entry points, and relevant native API snapshots. Flag a reachable
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breaking change, wrong export target, incompatible type shape, or accidental
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public exposure. Distinguish stable API from explicitly private or unstable API.
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Do not report only that a filtered generated snapshot was not updated. Infer
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compatibility from the changed source and visible contract.
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## Codegen contracts
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Treat JavaScript native-module and native-component specifications as sources
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for generated native contracts. Confirm a matching filename is actually a spec
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before applying this rule.
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Trace changed method names, optionality, nullability, enums, events, callbacks,
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commands, and component props into their consumers. Flag mismatches that produce
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a wrong value, missing registration, runtime exception, or native crash. Do not
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ask authors to hand-edit generated output.
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## Feature flags
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The configuration file is the source of truth. Common flags must preserve one
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contract across JavaScript, C++, Objective-C++, Kotlin, and Java. Overrides must
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happen before the first cached access.
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Trace changes to defaults, type, stage, removal, and call sites. Flag stale
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branches, incompatible defaults, or override ordering that makes the effective
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value depend on access order. Do not report only that generated files are absent.
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## Cross-platform behavior
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When a change crosses JavaScript, C++, Android, or Apple, identify the actual
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producer and every affected consumer. Report missing parity only when a reachable
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platform path now behaves incorrectly. Platform-specific behavior is not itself
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a defect.
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Use research only when a concrete compatibility candidate depends on an external
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contract. A standard describes a target, not proof that React Native claims full
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support. Confirm that target in repository code or documentation before reporting.
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Produce the shared `__overall_pr_risk__` handoff after assessing the complete
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change set.

‎.expo-code-review/agents/correctness-js-flow.md‎

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---
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description: Runtime correctness in React Native's Flow JavaScript, TypeScript, and Node execution paths.
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---
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<!-- @ref AGENTS.md#repo-structure — identifies the JavaScript runtime and package surfaces -->
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<!-- @ref AGENTS.md#common-commands — identifies Flow, Jest, and Fantom validation -->
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<!-- @ref packages/react-native/index.js — runtime public API entry point -->
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<!-- @ref packages/react-native/index.js.flow — typed public API entry point -->
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# JavaScript and Flow correctness
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Review logic inside JavaScript, Flow, TypeScript, and Node execution paths.
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## Own these defects
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- Incorrect state transitions, conditions, fallback behavior, or platform
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selection with a concrete runtime trigger.
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- Promise, callback, event subscription, timer, and cleanup defects that can
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lose work, duplicate work, retain objects, or update torn-down state.
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- Incorrect nullability, union discrimination, or value conversion that passes
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static checking but fails for a reachable input.
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- Public runtime getters or exports that resolve the wrong module or change
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lazy-loading and compatibility behavior.
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- JavaScript callers that violate an existing native or Codegen contract.
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Trace the changed value through its caller and consumer. Inspect Android and
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Apple siblings when platform selection affects the result. Find multiple nearby
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implementations before claiming that a repository convention exists.
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Use research only when the candidate depends on an external React, React Native,
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web, or type-system contract. The fetched source must materially support the
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finding; repository behavior remains grounded in the checked-out source.
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## Do not own
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- Cross-language parity, API snapshots, Codegen, and feature-flag contracts;
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the contract reviewer owns them.
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- Native implementation logic.
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- Build, packaging, publishing, release, and workflow orchestration; the build
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and release reviewer owns them.
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- Flow, lint, formatting, or syntax failures that CI reports directly.
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- A missing test without a concrete broken behavior.
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- A style difference or pattern observed in only one sibling.
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Only report a reachable failure in changed code. Do not report a theoretical
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edge case without a caller and input that can trigger it.

‎.expo-code-review/agents/correctness-native.md‎

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---
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description: Runtime correctness in React Native's C++, Android, Apple, and JNI execution paths.
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---
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<!-- @ref AGENTS.md#repo-structure — authoritative native subsystem map -->
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<!-- @ref glob:packages/react-native/ReactCommon/** — shared C++, Fabric, JSI, TurboModules, and Yoga -->
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<!-- @ref glob:packages/react-native/ReactAndroid/** — Android runtime and JNI -->
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<!-- @ref glob:packages/react-native/React/** — Objective-C and Objective-C++ runtime -->
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<!-- @ref glob:packages/react-native/ReactApple/** — Apple runtime and Swift integration -->
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# Native runtime correctness
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Review logic inside C++, Objective-C++, Swift, Kotlin, Java, and JNI. Own
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correctness inside one native implementation or call chain.
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## Shared C++
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Trace ownership and teardown across asynchronous callbacks. Flag reachable
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use-after-free, invalid reference capture, double ownership, re-entrancy, or
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lock-order failures. Verify the queue or thread on which callbacks and mutable
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state execute.
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## Android
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Trace Java or Kotlin values through JNI and C++. Check lifecycle and UI-thread
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requirements, JNI reference lifetime, callback or coroutine cancellation,
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nullable boundary values, and native registration. Report only a concrete
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crash, leak, race, or behavior change.
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## Apple
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Trace Objective-C++ and Swift values through C++ and framework boundaries.
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Check object and block lifetime, observer cleanup, queue affinity, module
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registration, and behavior across supported CocoaPods and Swift Package Manager
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build forms.
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Use research only for a concrete external platform, dependency, or build-tool
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contract. Keep platform ownership: Apple defines Apple APIs, Android defines
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Android and NDK APIs, and the named dependency defines its own behavior.
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## Do not own
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- Cross-language mismatches, generated contracts, feature flags, or public API
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compatibility; the contract reviewer owns them.
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- A compiler, formatter, or static-analyzer failure without an additional
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runtime defect.
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- Build graph, dependency, packaging, publishing, and workflow orchestration;
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the build and release reviewer owns them.
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- Exploitability or attacker-controlled memory corruption; the security
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reviewer owns the security classification.
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- A missing test without a concrete broken behavior.
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Only report a reachable failure in changed code. State the object or value
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lifetime, execution context, and caller that make the failure possible.

‎.expo-code-review/agents/security.md‎

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---
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description: Exploitable security, secret, native-boundary, workflow, and supply-chain defects.
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alwaysRun: true
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---
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<!-- @ref glob:packages/dev-middleware/** — development server and middleware trust boundaries -->
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<!-- @ref glob:packages/react-native/ReactCommon/jsinspector-modern/** — debugger protocol and runtime boundary -->
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<!-- @ref glob:packages/react-native/Libraries/Network/** — JavaScript networking surface -->
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<!-- @ref glob:packages/react-native/ReactAndroid/** — JNI and Android native boundary -->
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<!-- @ref glob:packages/react-native/React/** — Apple native boundary -->
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<!-- @ref glob:.github/workflows/** — workflow supply-chain surface -->
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# Security and secrets
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Review only defects with a concrete attacker-controlled path or credential
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impact. Lower volume is correct for this role.
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## React Native trust boundaries
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- For server, middleware, inspector, network, and developer-tool changes, trace
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URL, path, header, protocol-message, and filesystem inputs to their sink.
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Flag concrete command injection, path traversal, unsafe binding, origin or
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authorization bypass, or unintended file disclosure.
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- For JavaScript-to-native changes, trace attacker-controlled sizes, indexes,
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strings, enums, and nullable values through JSI or JNI into native memory.
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Classify memory corruption or controllable unsafe access here. Leave accidental
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crashes without an attacker path to the native correctness reviewer.
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- For scripts and native build logic, trace archive paths, subprocess arguments,
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environment values, downloaded artifacts, and generated file destinations.
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- Flag credentials or sensitive environment values that reach logs, exceptions,
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artifacts, generated source, or subprocesses that do not require them.
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## CI and workflow supply chain
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Treat any changed workflow as high-risk and reason about the trigger, not only
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the changed commands. Flag:
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- Untrusted code and secrets in the same job. A workflow that checks out or
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builds PR-controlled code and also exposes secrets or a write-scoped token can
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give a fork author code execution with those credentials.
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- Incorrect fork assumptions. Fork `pull_request` jobs receive no repository
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secrets and a read-only token. Base-context comment and target workflows do
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not have that protection. A maintainer gate controls who starts a run; it does
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not make checked-out PR code trusted.
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- Over-broad permissions, actions pinned only to a floating tag, or untrusted
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expression values interpolated directly into a shell command instead of
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entering through a fixed environment variable.
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## Do not report
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- Theoretical risks without a reachable attacker input and sink.
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- Defense-in-depth suggestions when a primary defense already contains the input.
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- Accidental native crashes with no attacker control.
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- Generic requests for more validation, tests, or hardening.
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- Issues in unchanged code that the pull request does not affect.
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A single substantiated exploit or secret leak is enough. If you cannot state the
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attacker input, the sink, and the missing boundary, do not report it.

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