C# and Unity development standards for Mark's projects.

C# and .NET project workflow guidelines. Activate when working with C# files (.cs), .csproj, .NET projects, or C#-specific tooling.

C# XML documentation with on-demand Haiku→Expert Review→Final workflow. Flexible Korean/English language support. Use when documenting C# APIs, properties, methods, classes, and interfaces.

C# static analysis tool for call graphs, unused code detection, impact analysis, HTML documentation generation, and Graphviz diagram export

This skill should be used when the user requests to generate, create, or configure Content Security Policy (CSP) headers for Next.js applications to prevent XSS attacks and control resource loading. It analyzes the application to determine appropriate CSP directives and generates configuration via next.config or middleware. Trigger terms include CSP, Content Security Policy, security headers, XSS protection, generate CSP, configure CSP, strict CSP, nonce-based CSP, CSP directives.

Debug CSRF token issues and authentication problems including 403 Forbidden errors, cookie issues, JWT tokens, OAuth flows, and session management. Use when troubleshooting CSRF verification failed, 403 errors on POST requests, login not working, or token refresh issues.

name: Cross-Site Request Forgery (CSRF) Testing

Organize CSS using BEM, SMACSS, and CSS-in-JS patterns. Use when building scalable, maintainable styling systems with proper naming conventions.

Modern CSS organization with native @import, @layer cascade control, CSS nesting, design tokens, and element-focused selectors. AUTO-INVOKED when editing .css files.

CSS authoring guidance emphasizing web standards, accessibility, and performance. Use when writing, reviewing, or refactoring CSS. Provides patterns, snippets, and conventions that prioritize native CSS over frameworks, semantic structure, and maintainable code. Refer to references/patterns.md for specific patterns and snippets.

Systematically find and replace ALL hardcoded hex values with proper CSS design tokens to ensure complete color consistency across the Pomo-Flow application. This skill addresses the critical issue of yellow vs orange medium priority colors by enforcing a unified design token system based on industry best practices from Atlassian, Salesforce, and enterprise design systems.

Comprehensive workflow for CSS development using Tailwind + semantic component patterns. This skill automatically routes you to the appropriate specialized workflow based on context.

Analyze CSS coverage, identify unused rules, and detect stylesheet conflicts. Use after visual QA to optimize stylesheets before publication.

Expert in modern CSS (cascade layers, OKLCH, container queries, defensive patterns). Use for CSS implementation, styling, layout, colors, typography, responsive design, and UI components.

Generate CSS, Tailwind, and styled-components code from design style selections

Deep CSS analysis tool for understanding specificity, cascade order, inheritance chains, and computed styles. Visualizes CSS complexity and suggests simplifications. Use when debugging specificity issues or understanding CSS behavior.

This skill provides prescriptive guidance for writing modern CSS layouts using intrinsic design principles, container queries, and fluid responsive techniques. When implementing CSS layouts, always consult this document first.

Precision CSS/styling modifications for pixel-perfect adjustments with Tailwind, CSS Modules, and plain CSS support

Guide for reviewing modern CSS framework. Use this when asked to review CSS in `packages/css`.

Guide for developing Storybook stories for CSS components in `@madogiwa-ui/css`.

CSS and styling workflow guidelines. Activate when working with CSS files (.css), Tailwind CSS, Stylelint, or styling-related tasks.

Write modern, performant, maintainable CSS following current best practices with deep knowledge of browser compatibility and CSS specifications.

Validate and audit CSV data for quality, consistency, and completeness. Use when you need to check CSV files for data issues, missing values, or format inconsistencies.

Analyzes CSV files, generates summary stats, and plots quick visualizations using Python and pandas.

Export RFP data, evaluations, and pursuits in CSV and other formats. Use when implementing data export features, building reports, or extracting data for analysis.

Guide for using the ct (CommonTools) binary to interact with charms,

Digital forensics and blockchain analysis for CTF challenges. Use when analyzing disk images, memory dumps, event logs, network captures, or cryptocurrency transactions.

Open Source Intelligence techniques for CTF challenges. Use when gathering information from public sources, social media, geolocation, or identifying unknown data.

Solve CTF reverse engineering challenges using systematic analysis to find flags, keys, or passwords. Use for crackmes, binary bombs, key validators, obfuscated code, algorithm recovery, or any challenge requiring program comprehension to extract hidden information.

Solve CTF (Capture The Flag) challenges by analyzing challenge descriptions, source code, and interacting with challenge environments to capture flags.

Web exploitation techniques for CTF challenges. Use when solving web security challenges involving XSS, SQLi, CSRF, file upload bypasses, JWT attacks, Web3/blockchain exploits, or other web vulnerabilities.

Technical leadership guidance for engineering teams, architecture decisions, and technology strategy. Includes tech debt analyzer, team scaling calculator, engineering metrics frameworks, technology evaluation tools, and ADR templates. Use when assessing technical debt, scaling engineering teams, evaluating technologies, making architecture decisions, establishing engineering metrics, or when user mentions CTO, tech debt, technical debt, team scaling, architecture decisions, technology evaluation, engineering metrics, DORA metrics, or technology strategy.

Expert methodology for making and documenting critical architectural decisions using ADRs, trade-off analysis, migration planning, and technical debt management.

Perform deep, expert-level codebase and architecture audits to identify technical strengths, weaknesses, risks, and opportunities. Use when a user asks for an assessment of a codebase's structure, quality, or readiness for scale. Deliver detailed, actionable, and prioritized recommendations grounded in engineering best practices.

Expert methodology for identifying, assessing, and mitigating technical and operational risks including security, incidents, compliance, and disaster recovery.

Expert methodology for creating strategic technology roadmaps aligned with business goals, including multi-horizon planning, capacity planning, and OKR frameworks.

CTP-Yoneda Skill

Run CTS test suites and investigate failures

Scan and aggregate task checkboxes from Speckit (.specify/) and context-planning (specs/) formats into a unified backlog.yaml, with automatic project context analysis and auto-update capabilities.

Generate daily and weekly planning reports from backlog and carryover state, applying WIP limits and priority rules from BaseContext.yaml, with automatic git commit/push.

Use when starting a session on a project, returning after time away, or before making significant changes. Essential for building comprehensive understanding of project state through total recall and deep exploration.

Comprehensive guide for building Computer Use Agents with the CUA framework. This skill should be used when automating desktop applications, building vision-based agents, controlling virtual machines (Linux/Windows/macOS), or integrating computer-use models from Anthropic, OpenAI, or other providers. Covers Computer SDK (click, type, scroll, screenshot), Agent SDK (model configuration, composition), supported models, provider setup, and MCP integration.

ALWAYS USE when building semantic layer, working with metrics/dimensions, or integrating dbt with Cube consumption APIs. Use IMMEDIATELY when working with Cube REST API, GraphQL queries, or Postgres wire protocol (psycopg2 connections). Provides research steps for data modeling, dbt integration, MEASURE() syntax, and API validation.

Cucumber/Gherkin BDD testing for behavior-driven development workflows

Cucumber best practices, patterns, and anti-patterns

Core Cucumber concepts, Gherkin syntax, and feature file structure

Comprehensive BDD testing with Cucumber and Gherkin syntax. Use when writing feature files (.feature), step definitions, hooks, or implementing Behaviour-Driven Development. Covers Gherkin keywords (Feature, Scenario, Given/When/Then, Background, Scenario Outline, Rule), step definition patterns for Ruby/JavaScript/Java/Python, hooks (Before/After/BeforeAll/AfterAll), tags, data tables, doc strings, and best practices. Triggers on cucumber, gherkin, BDD, feature files, step definitions, acceptance testing, executable specifications.

Writing effective step definitions and organizing test code

CUDA kernel development, debugging, and performance optimization for Claude Code. Use when writing, debugging, or optimizing CUDA code, GPU kernels, or parallel algorithms. Covers non-interactive profiling with nsys/ncu, debugging with cuda-gdb/compute-sanitizer, binary inspection with cuobjdump, and performance analysis workflows. Triggers on CUDA, GPU programming, kernel optimization, nsys, ncu, cuda-gdb, compute-sanitizer, PTX, GPU profiling, parallel performance.

Modern CSS standards covering essentials, responsive design, quality practices, and tooling for CUI projects