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vasilyu1983

vasilyu1983

204 Skills published on GitHub.

foundations-information-theory

Information-theory primitives for AI systems, entropy, mutual information, KL, compression, channel limits, MDL, bottlenecks, and signal quality. Use when quantifying information.

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foundations-network-science

Network-science primitives for graph systems, centrality, PageRank, communities, contagion, link prediction, and temporal networks. Use when analyzing graph structure.

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foundations-queueing-theory

Applies queueing theory (Little's Law, M/M/c, Erlang, Kingman, USL) to capacity and latency decisions. Use when load causes non-linear latency growth or queue overrun risk.

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foundations-reliability-theory

Reliability-theory primitives for MTBF/MTTR, availability, hazards, FMEA, redundancy, error budgets, Weibull analysis, and SLOs. Use when modeling failure.

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foundations-team-theory

Team-theory primitives for cooperative multi-agent decisions, subagent allocation, communication value, Dec-POMDPs, and decentralized control. Use when organizing agents.

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foundations-theory-of-constraints

Theory of Constraints primitives for focusing steps, drum-buffer-rope, throughput accounting, critical chain, and policy constraints. Use when sequencing by bottleneck.

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gamedev-godot

Creates Godot games from empty project to exported build. Use when starting, building, validating, or shipping a Godot 2D/3D game or app.

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gamedev-roblox

Creates Roblox experiences from empty Studio place to published world. Use when starting, building, validating, or shipping a Roblox game.

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ops-cost-optimization

Audits SaaS/PaaS, cloud commitment, and AI/LLM costs across Vercel, Supabase, AWS, and Cloudflare. Use when analyzing bills, right-sizing plans, or buying commitments.

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ops-incident-response

Guides incident response from detection through postmortem. Use when designing on-call runbooks, triaging production incidents, writing status updates, or improving MTTD and MTTR.

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product-help-center

Designs AI-first help centers and self-service support systems. Use when shaping taxonomy, article templates, support AI, or docs platform choices.

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product-management

Founder-PM toolkit for discovery, roadmaps, prioritization, and PMF measurement. Use when planning product strategy, metrics, or roadmaps.

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qa-persona-testing

Tests apps as an ICP persona through browser automation and reports friction, fixes, and risks. Use when running persona-based, ICP, or synthetic-user testing.

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qa-refactoring

Safe refactoring with behavior preservation. Use when reducing technical debt, planning codemods, applying strangler migrations, or tightening CI guardrails around risky changes.

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qa-resilience

Designs and tests distributed-system resilience. Use when adding retries, deadlines, hedging, circuit breakers, overload protection, chaos experiments, or SLO reliability gates.

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qa-security-testing

Builds automated security testing pipelines for SAST, DAST, SCA, secret scanning, and containers. Use when integrating scanners into CI or managing security regression gates.

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qa-testing-accessibility

Builds accessibility testing workflows for WCAG 2.2 audits and CI gates. Use when adding axe-core or Lighthouse checks, calibrating gate policy, or planning screen-reader testing.

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qa-testing-mobile

Mobile QA for iOS and Android. Use when planning automation frameworks, device matrix, flake control, or CI/CD release gates.

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qa-testing-nunit

Designs NUnit-based C# test suites for API, component, and integration coverage. Use when creating fixtures, wiring Testcontainers, or reducing flaky CI behavior.

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qa-testing-performance

Designs performance and load testing for web, API, and backend systems. Use when setting budgets, profiling bottlenecks, or adding performance regression gates.

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qa-testing-playwright

Builds and debugs Playwright E2E suites. Use when authoring browser tests, fixing flakes, or hardening Playwright CI and locator strategy.

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qa-testing-strategy

Risk-based test strategy for software delivery. Use when defining coverage, setting CI gates, managing flaky tests, choosing test layers, or establishing release criteria.

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research-arxiv-scout

Discovers and triages recent arXiv papers for AI/ML, agents, and software/QA. Use when scouting categories, arXiv IDs, or source lists.

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research-git

Scans public GitHub repos for agent skills, dev practices, and code patterns. Use when enriching skills, setting team policy, or researching a build domain.

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research-scout

Mines academic papers, research blogs, and curator newsletters for stealable methods and frameworks. Use when scanning research for applicable techniques across AI/ML/SWE.

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software-accessibility

Implements accessibility fixes in code. Use when remediating semantic HTML, ARIA, focus, keyboard support, or screen-reader behavior.

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software-ai-integration

Applies production AI integration patterns for chat, structured output, guardrails, provider routing, and AI UX. Use when adding LLM-powered features to an application.

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software-android-design

Designs and audits native Android interfaces. Use when reviewing Compose layout, typography, color, motion, or adaptive patterns on a verified emulator build.

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software-android-native

Guides native Android development with Kotlin, Jetpack Compose, and Views interop. Use when building, rewriting, or reviewing modern Android apps after establishing runtime truth.

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software-android-runtime-debugging

Build/install/launch proof, ANR/jank/memory triage, and stale-build debugging for native Android apps. Use when runtime truth, performance, or crash root cause is in doubt.

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software-architecture-design

Designs runtime and platform architecture inside a chosen solution. Use when deciding modular monolith vs services, consistency, resilience, or estate topology.

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software-baas-platforms

Chooses managed backend platforms such as Supabase, Convex, and Firebase. Use when comparing database, auth, realtime, and backend-service tradeoffs.

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software-backend

Builds backend services and APIs with durable defaults. Use when implementing REST, GraphQL, tRPC, or gRPC services with auth, queues, data, or observability.

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software-clean-code-standard

Defines clean-code standards and CC-* rules. Use when reviewing code, setting team standards, citing lint findings, or measuring erosion, complexity mass, and verbosity.

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software-cloudflare-wrangler

Guides Cloudflare Wrangler CLI usage for Workers, bindings, deploys, local dev, and config. Use when running or reviewing wrangler commands.

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software-csharp-backend

Applies C# and .NET backend standards. Use when shaping API boundaries, data access, resilience, observability, or security defaults.

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software-database-design

Designs database schemas, migrations, and data models for PostgreSQL, MySQL, MongoDB, and Redis. Use when planning tables, relationships, indexes, or ORM-backed schema changes.

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software-desktop

Guides cross-platform and native desktop development with Electron, Tauri, Flutter Desktop, MAUI, and platform-native frameworks. Use when choosing a stack or packaging installers.

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software-devtools

Designs developer tools, SDKs, CLIs, IDE extensions, and code generators. Use when shaping DX, typed clients, code generation, or package distribution workflows.

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software-email-engineering

Designs transactional email systems and send infrastructure. Use when implementing resets, receipts, deliverability controls, templates, or inbound email handling.

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software-frontend

Builds frontend applications across major web stacks. Use when implementing UI, fixing hydration or SSR issues, or setting up modern frontend architecture.

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software-ios-ai-engine

Design local AI engines for iOS. Use when wiring Apple Foundation Models, local classifiers, extraction, summarization, grounded answers, and cloud fallbacks.

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software-ios-design

Designs and audits native iOS interfaces. Use when reviewing or refining SwiftUI layout, typography, Liquid Glass, navigation, or dashboards on a freshly verified build.

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software-ios-native

Guides native iOS with Swift, SwiftUI, UIKit interop, concurrency, and persistence. Use when building or reviewing iPhone/iPad apps after establishing runtime truth.

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software-ios-runtime-debugging

Proves iOS build/install/launch truth and triages hangs, crashes, jank, memory kills, and stale builds. Use when simulator, bundle, or runtime performance state is in doubt.

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software-paas-hosting

Chooses PaaS compute hosting for apps, agents, bots, APIs, and workers. Use when picking Vercel, Fly.io, Railway, Render, Cloudflare, Deno, or container PaaS.

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software-performance

Systematic profiling, load testing, performance budgets, and regression prevention. Use when diagnosing slow services, benchmarking systems, or preventing regressions.

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software-realtime

Designs real-time and collaborative systems. Use when building chat, live dashboards, collaborative editing, notifications, WebSockets, SSE, or CRDT workflows.

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software-search

Designs application search systems. Use when choosing engines, indexing, relevance tuning, facets, autocomplete, or search analytics.

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software-security-appsec

Provides application security guidance for design and implementation. Use when reviewing auth, data handling, supply-chain controls, or AppSec architecture.

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