productivity▌

Encode and decode Swift types using Codable (Encodable & Decodable) with JSONEncoder, JSONDecoder, and related APIs. Targets Swift 6.3 / iOS 26+.

ALWAYS use this router first for math requests.

Build secure, scalable authentication and authorization systems using industry-standard patterns and modern best practices.

Guides app advertising: app install campaigns, user acquisition (UA), and in-app promotion. Use when promoting mobile apps (iOS, Android); conversion = install or in-app action, not landing page.

Idempotent Redundancy \n When adding redundant paths (fallbacks, belt-and-suspenders), make them idempotent. \n Pattern \n Redundancy without idempotency causes loops, churn, or data corruption. \n DO \n \n Use _is_merge: true for Braintrust updates \n Check if value exists before writing (fallback only if missing) \n Use atomic write/rename for file operations \n Make reconciliation steps safe to run repeatedly \n \n DON'T \n \n Write unconditionally in fallback paths \n Allow multiple writers

Use this skill when managing beta testers, groups, and build distribution on Google Play.

Production-ready GitHub Actions workflow patterns for testing, building, and deploying applications.

When searching code, use this decision tree:

Query the memory system for relevant learnings from past sessions.

Fast, AI-powered codebase search using WarpGrep. 20x faster than traditional grep.