Development skills

Fastify routes, JSON Schema validation, plugin system, TypeScript type providers

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Modern CLI development combining oclif's command framework with Ink's React-based terminal rendering

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

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

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Express.js routes, middleware, error handling, request/response patterns

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Qdrant vector database -- collection management, point operations, payload filtering, named vectors, quantization, recommendations, snapshots

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Tauri 2.x mobile development - iOS via WKWebView, Android via Android WebView, mobile plugins, Swift/Kotlin native code, permissions, debugging

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Serverless Redis-compatible key-value store via Upstash REST API -- edge-compatible, automatic JSON serialization, TTL-based caching

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

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

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Bun-native HTTP framework — routing, TypeBox validation, Eden Treaty, plugins, lifecycle hooks

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PostHog feature flags, rollouts, A/B testing. Use when implementing gradual rollouts, A/B tests, kill switches, remote configuration, beta features, or user targeting with PostHog.

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Xquik REST API patterns for X post search, user and timeline reads, cursor pagination, media downloads, monitors, signed webhooks, and approval-gated X actions

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Official TypeScript SDK for Google Gemini — client setup, text generation, multimodal input, function calling, structured output, streaming, embeddings, context caching, and chat sessions

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ElevenLabs voice AI SDK patterns for TypeScript/Node.js -- text-to-speech, streaming, voice cloning, speech-to-speech, pronunciation control, and conversational AI

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Auth.js (NextAuth v5) authentication patterns - configuration, providers, session strategies, middleware, database adapters, role-based access, Edge compatibility

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Payload CMS v3 — TypeScript-native headless CMS with code-first collections, hooks, access control, Local/REST/GraphQL APIs, admin panel, and database adapter pattern

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Stripe payment processing — Checkout Sessions, Payment Intents, subscriptions, webhooks, Connect, customer management, error handling

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Drizzle ORM, queries, migrations

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SQL query builder for PostgreSQL, MySQL, SQLite, and MSSQL -- fluent queries, schema builder, migrations, seeds, transactions, raw queries

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SurrealDB multi-model database - SurrealQL queries, record links, graph relations, live queries, schema definitions, authentication, TypeScript SDK

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Open-source headless CMS — content type schemas, REST API, Document Service API, custom controllers, lifecycle hooks, authentication, TypeScript

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