Generate and validate conventional commit messages following the conventionalcommits.org spec. Use whenever the user wants to commit code, mentions commit messages, git commit, or asks to create a commit. Triggers on "commit", "git commit", "conventional", or when reviewing commit message format.

Systematic debugging workflow and techniques. Use when something is broken, not working as expected, or throwing errors. Covers reproduction, isolation, hypothesis formation, fix implementation, and verification. Also triggers on "why does X fail", "debug this", "this is broken", or when encountering errors or unexpected behavior.

Use when starting feature work that needs isolation from current workspace - creates isolated git worktrees with smart directory selection and safety verification. Triggers on worktree, git worktree, isolated workspace, or creating a new branch for feature work.

Subagent dispatch patterns for implementation tasks. Use when spec-implement has multiple tasks to execute and subagents are available. Covers parallel dispatch for independent work, the two-stage review cycle (spec compliance then code quality), focused prompt construction, and integration of results. Trigger when executing plan tasks with subagent support, when facing 2+ independent problems, or when the user asks to use subagents for implementation.

DDD and hexagonal architecture with functional core pattern. Use when designing features, modeling domains, breaking down tasks, or understanding component responsibilities.

Challenge an approach with critical thinking. Use when questioning assumptions, validating decisions, testing approach validity, or preventing automatic agreement.

Socratic interrogation of plans against the project's domain model and documented decisions. Use when the user wants to stress-test a plan, clarify terminology, or validate assumptions against existing domain language. Updates CONTEXT.md and ADRs inline as decisions crystallise.

Stub-Driven TDD and layer boundary testing. Use when writing tests, deciding what to test, or testing at component boundaries.

Building REST APIs with FastAPI, Pydantic validation, and OpenAPI. Use when creating routes, handling requests, designing endpoints, implementing validation, error responses, pagination, or generating API documentation.

SQLAlchemy ORM patterns for Python database access. Use when defining models, writing queries, implementing upserts, working with JSON columns, or managing database sessions.

Temporal workflow orchestration in Python. Use when designing workflows, implementing activities, handling retries, managing workflow state, or building durable distributed systems.

Pick up tasks. Execute them. Track progress. Report. Stop when blocked.

TypeScript project tooling with Bun, tsgo, Vitest, Biome, and Turborepo. Use when setting up package.json scripts, running builds, typechecking, configuring tests, linting, formatting, or orchestrating monorepo development.

Type-safe SQL with Drizzle ORM in TypeScript. Use when defining database schemas, writing queries, setting up relations, running migrations, or working with PostgreSQL/MySQL/SQLite/Cloudflare D1/Durable Objects data layers.

DynamoDB single-table design using dynamodb-toolbox v2. Use when creating entities, defining key patterns, designing GSIs, writing queries, implementing pagination, or working with any DynamoDB data layer in TypeScript projects.

Type-safe functional effects with Effect-TS. Use when building applications with Effect, using Effect.gen generators, handling typed errors, managing services with Layer and Context.Tag, validating data with Schema, or managing resources with acquireRelease.