feat: add 20 new practical skills for professional Claude Code users
New skills across 5 categories:
Engineering (12):
- git-worktree-manager: Parallel dev with port isolation & env sync
- ci-cd-pipeline-builder: Generate GitHub Actions/GitLab CI from stack analysis
- mcp-server-builder: Build MCP servers from OpenAPI specs
- changelog-generator: Conventional commits to structured changelogs
- pr-review-expert: Blast radius analysis & security scan for PRs
- api-test-suite-builder: Auto-generate test suites from API routes
- env-secrets-manager: .env management, leak detection, rotation workflows
- database-schema-designer: Requirements to migrations & types
- codebase-onboarding: Auto-generate onboarding docs from codebase
- performance-profiler: Node/Python/Go profiling & optimization
- runbook-generator: Operational runbooks from codebase analysis
- monorepo-navigator: Turborepo/Nx/pnpm workspace management
Engineering Team (2):
- stripe-integration-expert: Subscriptions, webhooks, billing patterns
- email-template-builder: React Email/MJML transactional email systems
Product Team (3):
- saas-scaffolder: Full SaaS project generation from product brief
- landing-page-generator: High-converting landing pages with copy frameworks
- competitive-teardown: Structured competitive product analysis
Business Growth (1):
- contract-and-proposal-writer: Contracts, SOWs, NDAs per jurisdiction
Marketing (1):
- prompt-engineer-toolkit: Systematic prompt development & A/B testing
Designed for daily professional use and commercial distribution.
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