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This skill covers advanced Git operations and workflows, such as interactive rebasing, conflict resolution, history manipulation, bug bisecting, cherry-picking, reflog recovery, and branch management strategies.

Professional internal communications creation and management with templates for status reports, newsletters, announcements, team updates, and cross-functional communication. Use for: (1) Weekly/monthly status reports, (2) Company newsletters, (3) All-hands announcements, (4) Team updates, (5) Policy communications, (6) Change management communications, (7) Recognition and celebrations

Comprehensive guide for building Model Context Protocol (MCP) servers with support for tools, resources, prompts, and authentication. Use when: (1) Creating custom MCP servers, (2) Integrating external APIs with Claude, (3) Building tool servers for specialized domains, (4) Creating resource providers for documentation, (5) Implementing authentication and security

Comprehensive PDF manipulation, extraction, and generation with support for text extraction, form filling, merging, splitting, annotations, and creation. Use when working with .pdf files for: (1) Extracting text and tables, (2) Filling PDF forms, (3) Merging/splitting PDFs, (4) Creating PDFs programmatically, (5) Adding watermarks/annotations, (6) PDF metadata management

Professional web application testing and automation using Playwright with support for multiple browsers, mobile emulation, screenshot capture, network interception, and comprehensive test assertions. Use for: (1) E2E testing across browsers, (2) UI automation, (3) Form testing and validation, (4) Visual regression testing, (5) API mocking and interception, (6) Mobile responsive testing

Write, review, or improve SwiftUI code following best practices for state management, view composition, performance, modern APIs, Swift concurrency, and iOS 26+ Liquid Glass adoption. Use when building new SwiftUI features, refactoring existing views, reviewing code quality, or adopting modern SwiftUI patterns.

Use when setting up API clients - TanStack Query, Axios, JWT token management, error handling, or response parsing. NOT when plain fetch calls, non-API data handling, or unrelated UI logic. Triggers: "API client", "data fetching", "JWT token", "error handling", "paginated list", "TanStack Query".

Use when designing RESTful API endpoints in FastAPI or Python projects. Triggers for: creating GET/POST/PUT/DELETE endpoints, request validation with Pydantic, response formatting with JSON schemas, status code selection, pagination, filtering, or sorting parameters. NOT for: GraphQL APIs, WebSocket handlers, or non-RESTful endpoints.

Use when writing tests for backend APIs or frontend flows. Triggers for: unit tests, integration tests, E2E tests, pytest fixtures, TestClient setup, mock data factories, or test coverage analysis. NOT for: testing business logic that doesn't involve API endpoints.

Use when integrating Context7 (knowledge/context store) for document ingestion, semantic search, or scoped context retrieval. Triggers for: uploading documents, searching knowledge base, filtering by role/tenant, or providing AI with document-grounded context. NOT for: general database queries, file storage without context semantics, or non-document content.

Use when implementing data validation for API payloads, form inputs, or database writes. Triggers for: Pydantic models, Zod schemas, input sanitization, type validation, field constraints, or request/response schemas. NOT for: business logic (use domain services) or authentication/authorization.

Use when setting up environment configuration, loading .env files, or managing application settings across environments. Triggers for: .env setup, loading environment variables, Pydantic BaseSettings, configuration validation, or secret management. NOT for: code-specific logic, feature flags, or runtime feature toggles.