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Systematically explore and QA a web application to find bugs and UX issues with full reproduction evidence.

Diagnose and fix Swift Concurrency issues: async/await, actor isolation, Sendable, and Swift 6 migration.

Optimize web performance using Core Web Vitals, Lighthouse audits, and resource budgets.

Manage Gmail via the Google Workspace CLI: send, read, triage, reply, forward, and watch emails.

Idiomatic Rust code guidance based on Apollo GraphQL's best practices handbook for ownership, errors, and performance.

Build Expo API routes and server-side endpoints using Expo Router's file-based server functions.

Configure and use UnoCSS atomic CSS engine with presets like Wind (Tailwind-compatible), Icons, and Attributify.

Build React UIs using shadcn/ui components with Tailwind CSS, Radix primitives, and proper accessibility patterns.

Docker containerization expert for multi-stage builds, image optimization, security hardening, and Compose orchestration.

Optimize SQL queries with index strategies, query plan analysis, and rewrite patterns for faster database performance.

Apply VueUse composables in Vue 3/Nuxt projects to replace custom implementations with battle-tested utilities.

Plan and execute database schema migrations safely with rollback strategies and zero-downtime deployment patterns.