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Python refactoring catalog with 83 patterns covering immutability, class design, control flow, architecture, OO metrics, and Python idioms. Analyze code for smells and apply numbered refactoring patterns.
uv + ruff + mypy + pytestๆงๆใฎPythonใใญใธใงใฏใๅๆใปใใใขใใใจPostToolUse hooksใซใใใณใผใๅ่ณชใใงใใฏ่ชๅๅ
Python, uv, FastAPI, FastMCP, testing, and packaging workflows.
from lwmacct/260112-cc-plugins-study
Hard-won gotchas from the Python toolchain: importlib class identity, pip/PyPI name collisions, mock.patch.object vs __slots__, ruff on notebooks, and uv in fresh worktrees.
Python patterns for serverless applications including Lambda Powertools, DynamoDB single-table design, error handling, and project scaffolding
Modern Python development with uv package manager, pytest, FastAPI, and Django
Automated web QA: /qa:test drives browser-based test runs against a running application.
Atomic accessibility coverage: 13 skills (a11y-violation-gate, aria-authoring-patterns, axe-a11y, ibm-equal-access-a11y, lighthouse-a11y, pa11y-a11y, screen-reader-test-author, wave-a11y, wcag-checklist-builder, wcag-color-contrast, wcag-focus-trap, wcag-keyboard-navigation, wcag-compliance-reporter) and 2 agents (accessibility-code-critic, screen-reader-test-executor).
QA agent for automated dashboard testing via Playwright โ screenshots, health checks, error detection.
Reusable Claude Code QA-agent factory: API exploration, adversarial invariant testing, evidence judging, evals, and guardrails.
AI-assisted test generation + curation: 3 skills (ai-spec-coverage-mapper, ai-test-generator, model-based-test-graph-author) and 3 agents (ai-test-curator, ai-test-shallow-coverage-critic, mbt-suite-builder).
API testing: 8 skills (api-chaos-runner, api-testing-getting-started, karate-testing, postman-collections, restassured-testing, restler-fuzzing, schemathesis-fuzzing, tavern-testing) and 2 agents (api-test-author, api-test-tool-selector).
Background job and queue testing: 8 skills (bullmq-tests, celery-tests, cron-job-test-author, idempotency-test-author, kafka-consumer-tests, rabbitmq-patterns, sidekiq-tests, sqs-patterns) and 1 agent (async-job-health-critic). Covers async job runners, queue patterns, scheduled jobs, and idempotency guarantees.
Auth flow testing: 6 skills (auth0-tests, keycloak-tests, mfa-flow-test-author, oauth-flow-test-author, okta-tests, session-management-test-author) and 1 agent (token-storage-security-critic). Anchored on OAuth 2.0 / RFC 7636 PKCE / RFC 9700 / OWASP ASVS V3.
BDD pipelines: 10 skills (acceptance-test-from-criteria, bdd-getting-started, bdd-step-library-curator, behave-testing, cucumber-testing, gherkin-from-stories, living-documentation-publisher, manual-step-to-gherkin, reqnroll-testing, specflow-testing) and 2 agents (bdd-scenario-author, gherkin-style-reviewer).
Firefox + Chrome extension lifecycle, MV2 to MV3 migration, host-permission prompts, and storage.sync vs storage.local test patterns
Bug reproduction workflow: 1 skill (bug-report-template) and 9 agents (bug-report-from-recording, bug-repro-builder, crash-stack-trace-analyzer, defect-clusterer, defect-pipeline-runner, defect-trend-narrator, escape-defect-analyzer, failure-classifier, test-failure-debugger).
Cache testing across layers: Redis cache patterns, CDN cache-purge testing (Cloudflare, Fastly, CloudFront), Varnish VTC syntax, browser Cache-Control tests, cache-coherence + stampede + stale-while-revalidate references, and a cache-key collision detector. Covers RFC 9111 HTTP caching and the canonical multi-tier cache discipline (browser to CDN to app to data store).
End-to-end QA testing as a Claude Code plugin. Drop it into any web-app repo and Claude detects the framework, walks every page in a real browser, drives every form / modal / button / role gate, runs the whole platform in parallel, and files defects with screenshots.
Chaos engineering + fault injection: 8 skills (chaos-experiment-author, chaos-mesh, chaos-results-reporter, failure-injection-test-author, gremlin-chaos, litmus-chaos, steady-state-hypothesis-validator, toxiproxy-chaos) and 1 agent (chaos-drill-orchestrator).
Chart + data viz testing: 3 skills (chartjs-snapshot-tests, d3-snapshot-tests, vega-spec-validator) and 1 agent (chart-test-author). Covers Canvas + SVG + declarative-spec visualizations, complementing qa-visual-regression which targets general UI screens.
CI/CD test workflow patterns: 5 skills (ci-test-job-conventions, circleci-test-configs, github-actions-test-jobs, gitlab-ci-test-jobs, jenkinsfile-test-stages) and 1 agent (ci-pipeline-health-critic).
CLI + TUI testing tools: 4 skills (bats-testing, cli-output-conventions, pester-cli-testing, tui-snapshot-tester).
Production code quality: 5 skills (sonarqube-quality-perspective, codeclimate-config, lizard-complexity, madge-deps, knip-dead-code) and 1 agent (code-quality-critic). Production-only scope; test-code hygiene is owned by qa-test-review.