long-form-math
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zellij
Terminal workspace and multiplexer for interactive CLI sessions. Use when managing terminal sessions, running interactive REPLs, debugging applications, automating terminal workflows, or when user mentions zellij, terminal multiplexer, floating panes, or session layouts. Simpler alternative to tmux with native session management.
2mermaid-cli
Generate, validate, and fix diagrams from Mermaid markup using the mermaid-cli (mmdc) tool. Use when creating flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, pie charts, mindmaps, or any Mermaid-supported diagram type. Also use when validating, verifying, or fixing Mermaid diagram syntax. Triggers on mentions of mermaid, mmdc, diagram generation, diagram validation, or converting .mmd files to images/SVG/PDF.
2ultrathink
Invoke deep sequential thinking for complex problem-solving. Use when the user says 'use ultrathink', 'ultrathink', or when tackling problems that require careful step-by-step reasoning, planning, hypothesis generation, or multi-step analysis.
1react-best-practices
React and Next.js performance optimization guidelines from Vercel Engineering. Use when writing, reviewing, or refactoring React/Next.js code for optimal performance. 62 rules across 8 categories covering waterfalls, bundle size, server-side, re-renders, and rendering. Triggers on React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
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