Essential command-line tools and system utilities.
Performs browser performance profiling with Lighthouse, Core Web Vitals, and DevTools analysis. Use when auditing page performance, optimizing Core Web Vitals, analyzing bundle sizes, or implementing performance budgets.
Swift Concurrency review and remediation for Swift 6.2+. Use when asked to review Swift Concurrency usage, improve concurrency compliance, or fix Swift concurrency compiler errors in a feature or file.
ZX console hardware specifications and resource budgets. Triggers on "ZX specs", "ZX resolution", "ZX limits", "ROM size", "RAM limit", "VRAM", "render mode", "ZX capabilities". **Load references when:** - Budget planning -> `references/resource-budgets.md`
Debug jsgui3 client-side activation issues. Use when SSR renders but clicks don’t work, this.dom.el is null, or you see Missing context.map_Controls / activation failures.
TypeScript type system fundamentals and basic typing patterns
Detects memory leak vulnerabilities by identifying unfreed memory allocations and missing cleanup in error paths. Use when analyzing long-running processes, resource management, or investigating memory exhaustion issues.
Swift Concurrency review and remediation for Swift 6.2+. Use when asked to review Swift Concurrency usage, improve concurrency compliance, or fix Swift concurrency compiler errors in a feature or file.
Investigate and fix bugs systematically. Use when debugging issues or tracing errors.
Identifies unreachable functions, unused variables, and abandoned code in binary programs. Use when optimizing binary size, analyzing code coverage, or investigating abandoned functionality.
Audits web performance using Chrome DevTools MCP. Measures Core Web Vitals, finds render-blocking resources, dependency chains, layout shifts, caching issues, and accessibility gaps. Use for audits, profiling, debugging, or optimising page load performance and Lighthouse scores.
Use this skill when you need to discover MCP tool parameters, understand naming conventions, or debug tool call errors
Analyzes performance, identifies bottlenecks, suggests and implements optimizations
Capture and report runtime errors with component stack traces and user context.
Generate meta-proofs for occluded reasoning traces.
Systematic debugging expertise - 4-phase root cause process, evidence gathering, and hypothesis testing. Use when encountering any bug, test failure, or unexpected behavior before proposing fixes.
Deep code intelligence via Narsil MCP providing 76 tools for security scanning (OWASP, CWE, taint analysis), call graph analysis (CFG, DFG, callers/callees), structural queries (symbols, definitions, references), and supply chain security (SBOM, license compliance). Accessed via Code Mode for token efficiency.
Optimize CSS performance - critical CSS, code splitting, purging, bundle analysis
Detects various memory corruption vulnerabilities beyond simple buffer overflows including heap overflow, stack smashing, and double free. Use when analyzing complex memory management, heap operations, or investigating memory safety issues.
Claude Code memory (CLAUDE.md) configuration reference. Use when setting up project memory, understanding memory hierarchy, or configuring persistent instructions.
Instructions for using the prototype at .prototype/code.html as a non-project reference.
Resolve LinkedIn identity from any identifier (URL, username, Sales Nav ID, numeric ID) to canonical form, showing all known aliases and suggesting the best stable identifier to use. Use when investigating identity resolution, understanding which identifier to use in code, or troubleshooting duplicate person records.
Implement advanced caching with precise invalidation for highly dynamic data domains.
Adds new Domain Aggregates using Clean Architecture and DDD principles with full CRUD scaffolding across all layers
Create new domain expert with expertise file and workflows. Use when adding new technology or domain area.
