Development workflow - branching, fix/feature flow, release process, version bump, commit conventions. Use when: planning development work, creating branches, merging, preparing releases, bumping version, updating changelog.
Process invoices from messages (PDF/image attachments or URLs). Extract key values, validate mandatory fields, organize by month, update Excel. Use when: receiving invoices, processing receipts, bookkeeping tasks.
Incremental development methodology - small step iteration with validation. Use when: implementing features, fixing bugs, making code changes, planning implementation. 渐进式小步迭代开发方法。
Review pull requests. Read-only analysis — does NOT modify code, build, deploy, or run tests. Use when: review PR, code review, check branch changes.
Expert UI/UX/Frontend engineer agent. Covers UX heuristics, design systems, accessibility (WCAG 2.2), CSS architecture, design tokens, typography, color theory, motion design, responsive design, Core Web Vitals performance, modern frontend architecture, design-to-code workflow, and testing. Use when building UI, reviewing designs, optimizing frontend performance, or making UX decisions.
Andrej Karpathy's 4 coding principles for LLM agents: Think Before Coding, Simplicity First, Surgical Changes, Goal-Driven Execution. Use when writing code, planning, or reviewing code to reduce common LLM coding mistakes.
Create structured implementation plans with incremental steps. Use when: in plan mode, creating implementation plans, analyzing requirements, proposing solutions.
Build and deploy jyc on bare metal using deploy.sh with nohup. Use when instructed to build, deploy, or build-and-deploy jyc.