Reviews mature LESSONS-LEARNED.md entries, rewrites them as permanent rules in skill/instruction files, and archives graduated lessons. Use when graduating lessons into skills, promoting validated lessons, updating skills from past learnings, archiving mature lessons, codifying repeated patterns, or cleaning up a crowded LESSONS-LEARNED.md.

Coordinates multiple agents with parallel task spawning, health monitoring, circuit breakers, and escalation paths. Use when managing parallel agents, handling agent timeouts, orchestrate agents, run tasks in parallel, concurrent agent execution, or fan-out tasks. Use when coordinating multi-agent task delegation.

Creates and queries agent expertise profiles in AGENT-EXPERTISE.md, increments file-familiarity counters after each task, and ranks candidate agents by recency and task-area match. Use when deciding which agent should handle a file, checking who last worked on a module, recording task outcomes, or assigning work based on past performance.

Figma design-to-code workflows, design token extraction, component inspection, and asset export. Use when translating Figma designs into code, extracting design tokens, or referencing component specs.

Four lifecycle hooks every agent runs: on-session-start scans LESSONS-LEARNED.md and resumes checkpoints, on-pre-delegate verifies tracker issues and file partitions, on-post-delegate runs fast-review and CI checks, on-session-end executes the session guard and writes logs. Use when starting a new session, running pre-flight checks before delegation, coordinating between agents, reviewing a completed handoff, or wrapping up a session. Trigger terms: multi-agent setup, delegate tasks, agent coordination, session management, run pre-flight checks, start a new session, coordinate between agents, wrap up session

Playwright E2E testing patterns, cross-browser configuration, page objects, and CI setup. Use when creating E2E specs, visual regression suites, or configuring Playwright in CI. Trigger terms: playwright, e2e, trace, page object, cross-browser

Mandatory post-delegation gate that checks output completeness, verifies acceptance criteria compliance, flags regressions, and produces a PASS/FAIL verdict. Use when checking delegated work against acceptance criteria, running the post-delegation gate, validating agent output before acceptance, verifying a sub-agent completed its assignment, or running a post-delegation QA check.

Resend transactional email patterns, React Email templates, domain configuration, and webhook handling. Use when sending emails, building email templates, or configuring email delivery.

Runs 3 isolated reviewer sub-agents and consolidates a PASS/BLOCK verdict by majority. Use when the user requests an independent review of code changes, pull requests, design documents, or release notes.

Provides model routing rules, validates delegation prerequisites, supplies cost tracking templates, and defines dead-letter queue formats for Team Lead orchestration. Load when assigning tasks to agents, choosing model tiers, starting a delegation session, running a multi-agent workflow, delegating work, choosing which model to use, or assigning tasks.

Implements technical SEO: meta tags, JSON-LD structured data, sitemaps, and crawlability fixes. Use when adding schema markup, JSON-LD, robots.txt updates, canonical URLs, Open Graph tags, or improving crawlability.

Appends new entries to LESSONS-LEARNED.md via the opencastle lesson CLI, searches past lessons for matching errors, and proposes skill updates when retry patterns exceed thresholds. Use when consulting or updating LESSONS-LEARNED.md, after task failures, when capturing retrospective insights, or when a retry succeeds.

Manages Sanity CMS schemas, GROQ queries, dataset exports/imports, and Studio configuration. Use when updating Sanity schemas, running GROQ or Vision queries, exporting datasets, modifying content models, or configuring a headless CMS with Sanity.io.

Generates test plans, writes unit/integration/E2E test files, identifies coverage gaps, and flags common testing anti-patterns. Use when writing tests, creating test suites, planning test strategies, mocking dependencies, measuring code coverage, or test planning.

Saves and restores session state including task progress, file changes, and delegation history. Use when saving progress, resuming interrupted work, picking up where you left off, or checkpointing current work.

Defines a named visual aesthetic, selects typography pairings, builds CSS token systems, and adds entrance animations for high-design-quality pages. Use when the user asks to design a landing page, style a marketing site, create a distinctive UI theme, pick fonts, or add CSS animations — specifically when visual polish and brand identity matter rather than generic component scaffolding.

Vitest unit and integration testing patterns, commands, mocking (vi.mock), and coverage. Use when writing .test.ts files, configuring the test runner, or adding coverage thresholds.

Creates API route handlers, implements Server Actions with Zod schema validation, and integrates external REST APIs with error handling. Use when adding endpoints, building request handlers, or wiring external services (endpoint, REST API, request handling, fetch, .ts route files).

Explains how to configure App Router, implement server/client components, optimize data fetching, and secure routes. Use when the user mentions: 'add an authenticated route', 'migrate to App Router', 'optimize fetch caching', or 'fix RSC hydration'.

Create and update Jira issues, epics, and sprints; manage backlog and sprint transitions. Use when you say: 'create a ticket', 'open a story', 'link an epic', 'start a sprint', or 'search the backlog'.