开发技能

WatermelonDB reactive local database for React Native - schema, models, decorators, reactive queries, relations, writers/readers, batch operations, migrations, sync

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BLE scanning/connecting/GATT operations with react-native-ble-plx, NFC tag reading/writing with react-native-nfc-manager, permissions, background mode, battery-efficient patterns

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CLI code review — exit codes, cancellation and signals, non-TTY behaviour, the stdout/stderr split, error text, config precedence, subprocess safety and test adequacy. Load when reviewing a command-line tool's commands, entry point, prompts, output or tests, whichever parser or prompt library it uses.

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Backend specification frameworks — endpoint contracts, error catalogs, auth per endpoint, schema with constraints and indexes, migration strategy, middleware order. Load when a spec adds or changes an API endpoint, a database table, or a request pipeline.

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Code review process — reading order, findings, severity, scope and the approval decision. Load when reviewing a diff or PR, writing review comments, or deciding whether to approve or request changes.

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CLI specification frameworks — flag contracts, prompt flows, config precedence, exit codes, output per context (TTY, piped, JSON), error and help text, signals and cross-platform behaviour. Use when a spec adds or changes a command surface, an interactive flow, a config key, an exit path or what a command prints.

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MMKV high-performance key-value storage for React Native - synchronous JSI-based reads/writes, encryption, typed hooks, multiple instances, listeners, persistence middleware adapters

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React Navigation 7+ patterns - static and dynamic APIs, type-safe navigation, stack/tab/drawer navigators, deep linking, authentication flows, screen preloading, header customization

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Backend code review — injection and SSRF, boundary validation, object-level authorization, mass assignment and data exposure, error leakage, N+1 and unbounded queries. Use when a diff touches API routes or handlers, database access, auth middleware, or server code that reads files, starts processes or fetches URLs.

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React component review — hook rules, effect cleanup, derived state, keys, memoization evidence and keyboard access. Load when reviewing a diff that adds or changes React components or hooks.

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Push notification patterns - expo-notifications (Expo) and @react-native-firebase/messaging (bare RN), permission handling, token management, foreground/background/tap listeners, local scheduling, Android channels, notification categories and actions, badge management, rich notifications

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React Native Gesture Handler - gesture types, GestureDetector, gesture composition, state machine, platform-specific gestures, swipeable rows, hover gestures

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React Native performance profiling, optimization, and monitoring - JS/UI thread analysis, re-render prevention, list optimization, image performance, bundle size, startup time, memory leaks, React Compiler, New Architecture benefits

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File-based routing and navigation for Expo/React Native

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Biome v2 unified linter, formatter, and import organizer — single Rust-powered tool replacing ESLint + Prettier with 97% Prettier compatibility and 20x faster performance

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GraphQL server for Fastify with Mercurius — loaders, subscriptions, federation, JIT compilation

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Weaviate vector database patterns with weaviate-client v3 -- collection management, vectorizer modules, hybrid search, filtering, generative search (RAG), multi-tenancy, batch imports

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NestJS backend framework - modules, controllers, services, DI, guards, pipes, interceptors, exception filters, middleware, DTOs with class-validator

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GraphQL API server with Apollo Server — schema, resolvers, context, error handling, data sources, plugins

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GraphQL Yoga v5 server, Envelop plugins, subscriptions, error masking

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Query optimization, caching, indexing, connection pooling, async patterns

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Job queues, background processing, and task scheduling with BullMQ v5

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Elasticsearch patterns -- client setup, index management, search DSL, aggregations, vector search, bulk operations, deep pagination

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Tauri 2.x Rust command patterns, state management, error handling, events, channels, testing

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