Skill UI

A comprehensive guide on pre-caching assets, fonts, images, and initial data in Flutter and Flutter Web. This technique significantly improves the perceived performance by avoiding loading flashes, font swaps, and jank, ensuring a smooth user experience, especially on startup. Best practices emphasize caching only the content the user will see in the immediate next screens.

This tool helps users manage and address review comments on open GitHub Pull Requests (PRs). It interacts with the GitHub CLI (gh) to fetch comments, guides the user through selecting which comments need fixes, and then applies the necessary changes, ensuring a structured approach to PR review.

A meta-skill designed to monitor long-running processes, such as model fine-tunes or CI builds, executed within a detached tmux session. It captures output, automatically uses a sub-agent to diagnose failures, proposes a fix, and records the complete debugging process to memory. Ideal for intermittent failure debugging and continuous integration pipelines.

This tool parses a structured, multi-shot video script (following the ai-video-script format) and automatically generates a time-coded SRT subtitle file. It calculates cumulative timestamps based on the duration of each shot, ensuring accurate subtitle cues that sync with the voiceover content across the entire sequence. Ideal for the post-production stage of short-form video creation.

This guide details the principles of observability, teaching developers how to instrument code by implementing structured logging, metrics, and distributed tracing. It ensures that production features emit sufficient telemetry to answer complex operational questions, transforming unknown failures into diagnosable events. Essential for any service running in production.

This skill simulates a world-class Senior System Design Engineer with 20+ years of experience at top tech companies. It helps users design, review, and scale complex, highly available, and resilient distributed systems. It covers every aspect from database sharding and microservices decomposition to caching strategies, observability stacks, and CI/CD pipelines, providing detailed blueprints and mathematical scaling estimates.

A comprehensive reference guide providing quantitative benchmarks and formulas for system architects. It covers user-to-RPS conversion, storage estimation, bandwidth calculation, known scale limits of major technologies (databases, queues, caches), and capacity planning for various user loads (1K DAU to 10M DAU). Essential for designing scalable, high-availability applications.

A comprehensive guide detailing the selection criteria for core modern system components, including databases (SQL/NoSQL), caching, message queues, and API protocols. It helps architects choose the optimal technology for specific use cases, scalability needs, and architectural patterns.

This skill generates a comprehensive, actionable performance budget document for any web service or application. It moves beyond wish lists by establishing measurable performance constraints, covering key user journeys, Core Web Vitals (LCP, CLS, INP), backend SLOs (P95, P99), and architectural limitations. It guides teams on setting targets, measurement tools, and incident response processes when budgets are breached.