Frontend

This skill provides guidance for extracting text commands, moves, or typed input from video recordings using OCR. It applies when extracting gameplay commands (e.g., Zork), terminal sessions, or any text-based interactions captured in video format. Use this skill when processing videos of text-based games, terminal recordings, or any scenario requiring OCR-based command extraction from screen recordings.

Guidance for creating polyglot files that are valid in both Python and C. This skill applies when tasked with writing code that must be parseable and executable by both the Python interpreter and C compiler. Covers polyglot syntax techniques, testing strategies, and critical cleanup requirements.

Guidance for constructing complex regular expressions that extract and validate data from log files. This skill applies when building regex patterns to parse log entries with requirements like IP address validation, date extraction, boundary conditions, and selecting specific occurrences (first/last). Use this skill when the task involves creating regex for log parsing with multiple validation constraints.

This skill guides writing comprehensive Minitest tests for Ruby and Rails applications. Use when creating test files, writing test cases, or testing new features. Covers both traditional and spec styles, fixtures, mocking, and Rails integration testing patterns.

Router skill for DiPeO frontend (React, visual editor, GraphQL integration, TypeScript types). Use when task mentions React components, diagram editor, GraphQL hooks, or type errors. For simple tasks, handle directly; for complex work, escalate to dipeo-frontend-dev agent.

Guidance for implementing encoders/compressors that must produce output compatible with an existing decoder/decompressor. This skill applies when tasked with writing compression algorithms, arithmetic coders, entropy encoders, or any encoder that must be the inverse of a given decoder implementation.

Analyze and optimize application performance including bundle size, render performance, and API response times. Use when investigating slow pages or optimizing production builds.

Guidance for filtering JavaScript and XSS attack vectors from HTML while preserving original formatting. This skill should be used when tasks involve removing script content, sanitizing HTML, filtering XSS payloads, or creating security filters that must preserve the original document structure unchanged.

Guidance for Bayesian Network DAG structure recovery, parameter learning, and causal intervention tasks. This skill should be used when tasks involve recovering DAG structure from observational data, learning Bayesian Network parameters, performing causal interventions (do-calculus), or generating samples from modified networks. Applies to tasks mentioning Bayesian networks, DAG recovery, structure learning, causal inference, or interventional distributions.

Guide for extracting code or pseudocode from images using OCR and implementing it correctly. This skill should be used when tasks involve reading code, pseudocode, or algorithms from images (PNG, JPG, screenshots) and executing or implementing the extracted logic.

Use when implementing real-time features requiring reliability, especially LLM streaming. Applies AnyCable patterns for message delivery guarantees, presence tracking, and Action Cable migration.

Use to execute bd tasks iteratively - executes one task, reviews learnings, creates/refines next task, then STOPS for user review before continuing

Apply first-principles thinking to break down complex problems into fundamental truths and rebuild solutions from the ground up. Use when solving strategic decisions, breaking through blockers, or challenging assumptions. Triggers on first principles, Elon Musk methodology, fundamental truths, strip assumptions, physics of the problem, rebuild from scratch.

Guidance for extracting secrets from protected or obfuscated binaries through systematic static and dynamic analysis. This skill should be used when tasks involve reverse engineering executables, extracting hidden flags or keys, analyzing binary protections, or decoding obfuscated data within compiled programs.

Create distinctive, production-grade frontend interfaces with high design quality. Use when building web components, pages, or applications. Includes framework-specific guidance for Tailwind, React, Vue, and Rails/Hotwire ecosystems.

Guidance for building and installing Cython extension packages, particularly when resolving compatibility issues with modern Python and NumPy versions. This skill applies when installing legacy Cython packages, fixing NumPy 2.0 deprecation errors, resolving Python 3.x compatibility issues in extension modules, or troubleshooting Cython compilation failures. Use this skill for tasks involving setup.py with Cython extensions, deprecated NumPy type errors, or installing packages to system Python environments.

Guidance for sanitizing git repositories by identifying and removing sensitive credentials, API keys, tokens, and other secrets. This skill should be used when tasks involve cleaning repositories of secrets, preparing code for public release, auditing for credential exposure, or removing sensitive data from version control history.

Test klaude-code interactively using tmux with synchronous task completion. Use when testing UI features, verifying changes, or debugging interactive behavior. Eliminates polling/sleep by using KLAUDE_TEST_SIGNAL for precise synchronization.

Provides systematic approaches for solving multi-person scheduling problems with complex constraints. This skill should be used when finding meeting times, scheduling events, or solving optimization problems involving multiple calendars, availability windows, time-based constraints, preferences, and buffer requirements.

Guidance for setting up Git-based web deployment systems where pushing to a Git repository automatically deploys content to a web server. This skill should be used when tasks involve configuring bare Git repositories with post-receive hooks for automated web deployment, setting up lightweight web servers to serve deployed content, or creating Git-push-to-deploy workflows. Covers service persistence, permission management, and verification strategies.