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Found 119 Skills
Critical rules and common mistakes to avoid in Convex development. Use when reviewing Convex code, debugging issues, or learning what NOT to do. Activates for code review, debugging OCC errors, fixing type errors, or understanding why code fails in Convex.
Expert patterns for Salesforce platform development including Lightning Web Components (LWC), Apex triggers and classes, REST/Bulk APIs, Connected Apps, and Salesforce DX with scratch orgs and 2nd generation packages (2GP). Use when: salesforce, sfdc, apex, lwc, lightning web components.
Comprehensive knowledge of all 23 Gang of Four design patterns with progressive disclosure (Quick/Practical/Deep), pattern recognition for problem-solving, and philosophy-aligned guidance to prevent over-engineering.
Review UI code for Web Interface Guidelines compliance. Use when asked to review UI, check accessibility, audit design, review UX, or check against best practices.
Django template patterns including inheritance, partials, tags, and filters. Use when working with templates, creating reusable components, or organizing template structure.
Test-driven development with red-green-refactor loop. Use when user wants to build features or fix bugs using TDD, mentions "red-green-refactor", wants test-first development, or requests TDD workflow.
Architecture principles, module boundaries, folder structure, and project type profiles
Classic and modern software design patterns
ANTI-PATTERN - Example showing violations of self-containment (DO NOT COPY)
Playwright automation best practices for web scraping and testing. Use when writing or reviewing Playwright code, especially for element operations (click, fill, select), waiting strategies (waitForSelector, waitForURL, waitForLoadState), navigation patterns, and locator usage. Apply when encountering unstable tests, race conditions, or needing guidance on avoiding deprecated patterns like waitForNavigation or networkidle.
Common mistakes, performance pitfalls, and store rejection reasons in browser extension development