Claude Skills by shengdabai

Expert ESP32 development with ESP-IDF 5.3.x, covering FreeRTOS patterns, peripheral drivers, WiFi/BLE networking, power management, and hardware optimization. Use when developing ESP32 firmware, implementing FreeRTOS tasks, configuring WiFi/BLE, optimizing memory and power, or working with ESP32-S3 hardware like T-Embed.

Build production-ready FastAPI backends with async/await, SQLAlchemy, JWT authentication, Pydantic validation, and Celery background tasks. Use when creating REST APIs, implementing CRUD endpoints, setting up authentication, managing database sessions, or building backend services with FastAPI.

Comprehensive Flutter development guidance covering widget composition (including ADHD-friendly UI patterns), state management (Bloc and Riverpod), navigation with go_router, platform-specific code for iOS/Android/Web/Desktop, Material Design 3 implementation, and performance optimization. Use when building Flutter applications, implementing state management, creating cross-platform features, optimizing performance, or designing accessible user interfaces.

Expert hardware communication protocols including MQTT, I2C, SPI, UART, BLE, and WiFi. Use when implementing device-to-device communication, designing MQTT messaging systems, configuring bus protocols, integrating wireless connectivity, troubleshooting protocol issues, or setting up multi-device embedded systems. Particularly relevant for IoT projects, embedded systems with multiple peripherals, and distributed sensor networks.

Expert IoT security review covering network security, authentication, encryption, secure boot, and attack surface analysis. Use when reviewing device security, implementing authentication, hardening firmware, conducting security audits, or analyzing embedded systems for vulnerabilities. Particularly valuable for ESP32/RP2350 projects, BLE/WiFi devices, MQTT systems, and mobile IoT applications.

Expert IoT system architecture covering distributed systems, event-driven design, edge computing, and microservices patterns. Use when designing multi-device systems, planning communication architecture, implementing event-driven patterns, or scaling IoT deployments. Specializes in MQTT-based architectures, state synchronization, and real-time constraints.

Expert IoT system architecture covering distributed systems, event-driven design, edge computing, and microservices patterns. Use when designing multi-device systems, planning communication architecture, implementing event-driven patterns, scaling IoT deployments, or documenting architecture decisions for distributed IoT systems.

Expert guidance for LVGL 9.4 - a light and versatile embedded graphics library. Use when working with LVGL UI components, widgets, layouts, animations, styles, events, or embedded display development with C.

Expert PostgreSQL database development skill covering schema design, normalization, Alembic migrations, SQLAlchemy ORM patterns, query optimization, index strategies, JSONB for flexible data, and full-text search. Use when designing database schemas, creating migrations, optimizing queries, implementing full-text search, or working with PostgreSQL-specific features like JSONB.

Expert RP2350 C/C++ development with Pico SDK, covering CMake configuration, peripheral drivers (GPIO, SPI, I2C, PWM, UART), hardware optimization, FreeRTOS integration, and bare-metal programming. Use when developing C/C++ firmware for RP2350/RP2040 boards, implementing hardware drivers, optimizing performance, or building real-time embedded applications.

Expert RP2350 development with MicroPython, covering Pimoroni Presto hardware, touchscreen interfaces, RGB lighting control, BLE server implementation, and display rendering. Use when developing for RP2350 boards, implementing touch UI, managing BLE communication, or working with RGB backlights.

Expert Python package management with uv - fast dependency management, virtual environments, and modern Python project workflows. Use when setting up Python projects, managing dependencies, or optimizing Python development workflows with uv.

Create documentation optimized for ADHD and neurodivergent readers with short scannable content, clear hierarchy, progressive disclosure, actionable steps, and reduced cognitive load. Use when creating or improving any technical documentation (README files, API docs, tutorials, guides, onboarding materials) or when users request accessible, easy-to-scan, or beginner-friendly documentation.

Automatically detect and add comprehensive documentation to code files across multiple languages (Python, JavaScript/TypeScript, C/C++, Dart/Flutter). Generate language-appropriate docstrings, comments, and examples following industry standards. Use when code files lack documentation, after implementing new features, or when requested to document code. Support single files and batch documentation.

Execute implementation plans phase-by-phase with checkpoint validation. Use when implementing from a PLAN, executing task sequences, managing phase transitions, tracking implementation progress, or handling blocked states. Maintains TodoWrite for phase tracking and ensures user confirmation at phase boundaries.

Create and validate solution design documents (SDD). Use when designing architecture, defining interfaces, documenting technical decisions, analyzing system components, or working on solution-design.md files in docs/specs/. Includes validation checklist, consistency verification, and overlap detection.

Apply scientific debugging methodology through conversational investigation. Use when investigating bugs, forming hypotheses, tracing error causes, performing root cause analysis, or systematically diagnosing issues. Includes progressive disclosure patterns, observable actions principle, and user-controlled dialogue flow.

Coordinate multi-agent code review with specialized perspectives. Use when conducting code reviews, analyzing PRs, evaluating staged changes, or reviewing specific files. Handles security, performance, quality, and test coverage analysis with confidence scoring and actionable recommendations.

Discover patterns, rules, and interfaces through iterative analysis cycles. Use when analyzing business rules, technical patterns, security, performance, integration points, or domain-specific areas. Includes cycle pattern for discovery to documentation to review workflow.

Preserve and restore session context across conversations. Use when completing significant work, switching contexts, or resuming previous work. Captures decisions, progress, blockers, and important discoveries. Enables seamless context handoff between sessions.

Maintain documentation freshness and code-doc alignment. Use when detecting stale documentation, suggesting doc updates during implementation, validating doc accuracy, or generating missing documentation. Handles staleness detection, coverage analysis, and doc/code synchronization.

Manage git operations for spec-driven development. Use when creating branches for specs/features, generating commits, or creating PRs. Provides consistent git workflow across specify, implement, and refactor commands. Handles branch naming, commit messages, and PR descriptions based on spec context.

Create and validate implementation plans (PLAN). Use when planning implementation phases, defining tasks, sequencing work, analyzing dependencies, or working on implementation-plan.md files in docs/specs/. Includes TDD phase structure and specification compliance gates.

Validate implementation against specifications (PRD/SDD/PLAN). Use when verifying specification compliance, checking interface contracts, validating architecture decisions, detecting deviations, or ensuring implementations match documented requirements. Provides structured compliance reporting.

Document business rules, technical patterns, and service interfaces discovered during analysis or implementation. Use when you find reusable patterns, external integrations, domain-specific rules, or API contracts. Always check existing documentation before creating new files. Handles deduplication and proper categorization.

Create and validate product requirements documents (PRD). Use when writing requirements, defining user stories, specifying acceptance criteria, analyzing user needs, or working on product-requirements.md files in docs/specs/. Includes validation checklist, iterative cycle pattern, and multi-angle review process.

Systematic code refactoring while preserving all external behavior. Use when identifying code smells, planning refactoring sequences, executing safe structural improvements, or validating behavior preservation. Includes code smell catalog (reference.md) and refactoring execution protocol.

Initialize and manage specification directories with auto-incrementing IDs. Use when creating new specs, checking spec status, tracking user decisions, or managing the docs/specs/ directory structure. Maintains README.md in each spec to record decisions (e.g., PRD skipped), context, and progress. Orchestrates the specification workflow across PRD, SDD, and PLAN phases.

Validate specifications, implementations, or understanding for completeness, consistency, and correctness. Use when checking spec quality, comparing implementation against design, validating file contents, assessing readiness, or confirming understanding. Supports spec IDs, file paths, and freeform requests.

Generate structured agent prompts with FOCUS/EXCLUDE templates for task delegation. Use when breaking down complex tasks, launching parallel specialists, coordinating multiple agents, creating agent instructions, determining execution strategy, or preventing file path collisions. Handles task decomposition, parallel vs sequential logic, scope validation, and retry strategies.

Apply consistent security, performance, and accessibility standards across all recommendations. Use when reviewing code, designing features, or validating implementations. Cross-cutting skill for all agents.

Interpret existing docs, READMEs, specs, and configuration files efficiently. Use when onboarding to a codebase, verifying implementation against specs, understanding API contracts, or parsing configuration. Covers reading strategies for README, API docs, specs, configs, and cross-referencing with code.

Consistent error patterns, validation approaches, and recovery strategies. Use when implementing input validation, designing error responses, handling failures gracefully, or establishing logging practices. Covers operational vs programmer errors, user-facing vs internal errors, and recovery mechanisms.

RICE, MoSCoW, Kano, and value-effort prioritization frameworks with scoring methodologies and decision documentation. Use when prioritizing features, evaluating competing initiatives, creating roadmaps, or making build vs defer decisions.

Identify existing codebase patterns (naming conventions, architectural patterns, testing patterns) to maintain consistency. Use when generating code, reviewing changes, or understanding established practices. Ensures new code aligns with project conventions.

Requirement gathering techniques, stakeholder analysis, user story patterns, and specification validation. Use when clarifying vague requirements, resolving conflicting needs, documenting specifications, or validating requirements with stakeholders.

Auto-detect project tech stacks (React, Vue, Express, Django, etc.). Recognize package managers and configuration patterns. Use when starting work on any project, analyzing dependencies, or providing framework-specific guidance.

WCAG 2.1 AA compliance patterns, screen reader compatibility, keyboard navigation, and ARIA best practices. Use when implementing accessible interfaces, reviewing UI components, or auditing accessibility compliance. Covers semantic HTML, focus management, color contrast, and assistive technology testing.

Interview techniques, persona creation, journey mapping, and usability testing patterns. Use when planning research, conducting user interviews, creating personas, mapping user journeys, or designing usability tests. Essential for user-research, requirements-analysis, and interaction-architecture agents.

User interview techniques, persona creation, journey mapping, and research synthesis patterns. Use when planning research studies, conducting interviews, creating personas, or translating research findings into actionable design recommendations.

REST and GraphQL API design patterns, OpenAPI/Swagger specifications, versioning strategies, and authentication patterns. Use when designing APIs, reviewing API contracts, evaluating API technologies, or implementing API endpoints. Covers contract-first design, resource modeling, error handling, pagination, and security.

Domain-Driven Design tactical and strategic patterns including entities, value objects, aggregates, bounded contexts, and consistency strategies. Use when modeling business domains, designing aggregate boundaries, implementing business rules, or planning data consistency.

Create architectural decision records (ADRs), system documentation, API documentation, and operational runbooks. Use when capturing design decisions, documenting system architecture, creating API references, or writing operational procedures.

Apply test pyramid principles, coverage targets, and framework-specific patterns. Use when designing test suites, reviewing test coverage, or implementing tests. Covers Jest, Pytest, and common testing frameworks with naming conventions and organization patterns.

Pipeline design, deployment strategies (blue-green, canary, rolling), and CI/CD platform patterns. Use when designing pipelines, implementing deployments, configuring quality gates, or setting up automated release workflows. Covers GitHub Actions, GitLab CI, and platform-agnostic patterns.

Monitoring strategies, distributed tracing, SLI/SLO design, and alerting patterns. Use when designing monitoring infrastructure, defining service level objectives, implementing distributed tracing, creating alert rules, building dashboards, or establishing incident response procedures. Covers the three pillars of observability and production readiness.

Systematic code review patterns, quality dimensions, anti-pattern detection, and constructive feedback techniques. Use when reviewing code changes, assessing codebase quality, identifying technical debt, or mentoring through reviews. Covers correctness, design, security, performance, and maintainability.

Test charter structure, SFDPOT and FEW HICCUPPS heuristics, edge case discovery patterns, and session-based test management. Use when conducting exploratory testing, discovering edge cases, validating user journeys, or finding issues automated tests miss.

Measurement approaches, profiling tools, optimization patterns, and capacity planning. Use when diagnosing performance issues, establishing baselines, identifying bottlenecks, or planning for scale. Always measure before optimizing.

Test pyramid strategy, test design patterns, coverage analysis, and quality gate configuration. Use when designing test strategies, improving coverage, setting up automation, or defining quality gates. Covers unit, integration, and E2E testing across frameworks.