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DESIGN-CATALOG
DCE-safe require() patterns and edge runtime constraints. Use when writing conditional require() calls, guarding Node-only imports (node:stream etc.), or editing define-env-plugin.ts / app-render / stream-utils for edge builds. Covers if/else branching for webpack DCE, TypeScript definite assignment, the NEXT_RUNTIME vs real feature flag distinction, and forcing flags false for edge in define-env.ts.
React vendoring and react-server layer boundaries. Use when editing entry-base.ts, $$compiled.internal.d.ts, compiled/react* packages, or taskfile.js copy_vendor_react. Covers the entry-base.ts boundary (all react-server-dom-webpack/* imports must go through it), vendored React channels, type declarations, Turbopack remap to react-server-dom-turbopack, ComponentMod access patterns, and ESLint suppression for guarded requires.
Generate and optimize SQL queries for data retrieval and analysis
Run /check-virality, then create GitHub issues for all findings. Issues are created with priority labels and structured format. Use /fix-virality instead if you want to fix issues immediately.
Browse YouTube playlists and fetch video transcripts. Use when the user shares a playlist link, asks "what's in this playlist", "list playlist videos", "browse playlist content", or wants to work with playlist videos and get their transcripts.
Access YouTube video data — transcripts, metadata, channel info, search, and playlists. A lightweight alternative to Google's YouTube Data API with no quota limits. Use when the user needs structured data from YouTube videos, channels, or playlists without dealing with Google API setup, OAuth, or daily quotas.
Use when mocha test structure, hooks, and async testing patterns for JavaScript testing.
This skill should be used when generating lesson summaries for educational content. It extracts key concepts, mental models, patterns, and common mistakes from lesson markdown files using a Socratic extraction process. Use this skill when a lesson file needs a `.summary.md` companion file, or when reviewing/refreshing existing summaries.
Work with YouTube channels — resolve handles to IDs, browse uploads, get latest videos, search within channels. Use when the user asks about a specific channel, wants to see recent uploads, or says "what has X posted lately", "latest from TED", "show me their channel", "list channel videos", "browse channel uploads".
Generate, optimize, and explain SQL queries with best practices. Use when writing database queries or optimizing SQL performance.
Guidelines for working with the Knock CLI to manage workflows, templates, and other notification resources in a Knock project.