expert▌

Visual UI patterns for sharing composables across Android and Desktop.

Review and fix Kotlin Coroutines issues in Android codebases by applying structured concurrency, lifecycle safety, proper scoping, and modern best practices with minimal behavior changes.

Expert code review of current git changes with a senior engineer lens. \n \n Detects SOLID violations (SRP, OCP, LSP, ISP, DIP), architecture smells, and proposes incremental refactors with clear rationale \n Scans for security risks including injection, XSS, AuthZ gaps, race conditions, and unsafe deserialization with exploitability assessment \n Identifies removal candidates and unused code with safe deletion vs. deferred plans and concrete follow-up checkpoints \n Flags code quality issues: e

Complete iOS/macOS/watchOS/tvOS development with SwiftUI, async/await, protocol-oriented design, and actor-based concurrency. \n \n Covers SwiftUI state management with @Observable, async/await patterns, protocol-oriented architecture with associated types, and actor isolation for thread safety \n Includes validation checkpoints at each workflow stage: compilation verification, strict warning checks for actor isolation, and async test confirmation \n Provides reference guides for SwiftUI pattern

This skill enables Claude to analyze content analytics data, generate comprehensive reports, identify performance trends, calculate ROI and revenue attribution, and provide actionable insights for content optimization.

Complete financial clarity for indie businesses: profit analysis, tax planning, cash flow forecasting, and multi-venture tracking. \n \n Calculates true profitability using a structured formula that accounts for COGS, operating expenses, owner salary, and tax reserves \n Tracks finances separately across multiple businesses with comparative P&L analysis and runway forecasting \n Provides quarterly estimated tax planning with payment schedules and S-corp vs. sole proprietor guidance \n Inclu

Expert guidance for financial systems, FinTech applications, banking platforms, and payment processing. \n \n Covers payment gateway integration (Stripe), open banking APIs (Plaid), and core banking concepts including PCI-DSS, SOX, and Basel III compliance \n Includes practical code examples for payment processing, refunds, webhook handling, and bank account/transaction retrieval \n Provides financial calculation utilities for compound interest, loan amortization, NPV, and ROI with proper Decima

Expert React 18+ and React 19 component development with Server Components, hooks, and state management. \n \n Covers React 19 features including use() hook, useActionState forms, and Server Components in Next.js App Router \n Implements custom hooks, state management patterns (Context, Zustand, Redux), and data fetching with TanStack Query \n Enforces TypeScript strict mode, error boundaries, proper cleanup, and accessibility standards throughout \n Includes performance optimization via memoiza

Advanced TypeScript expertise covering type systems, performance optimization, monorepo patterns, and modern tooling. \n \n Diagnoses and resolves complex type errors, circular dependencies, and performance bottlenecks with systematic debugging approaches \n Guides migrations from JavaScript to TypeScript, ESM/CJS transitions, and tool upgrades (ESLint to Biome, Lerna to Nx/Turborepo) \n Provides type-level programming patterns including branded types, conditional types, and inference techniques

Philosophy: Non-opinionated, correctness-focused. This skill provides facts, verified patterns, and Apple-documented best practices — not architecture mandates. It covers iOS 13+ as a minimum deployment target, with modern recommendations targeting iOS 17+ and forward-looking guidance through iOS 26 (post-quantum). Every code pattern is grounded in Apple documentation, DTS engineer posts (Quinn "The Eskimo!"), WWDC sessions, and OWASP MASTG — never from memory alone.