Explore a codebase for architectural friction and propose competing redesigns. Triggers on 'prospector', 'find improvements', 'architecture friction', 'what should I refactor', 'where are the structural problems', or any task requesting discovery of codebase improvement opportunities.

Generate a stakeholder-facing PRD from a design doc. Use when you have a finalized design doc and need a non-technical product requirements document for archival or sharing. Triggers on /prd, 'generate PRD', 'write a PRD', 'product requirements'.

Use when you have a spec or requirements for a multi-step task, before touching code

Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies

Use when creating a visual mockup, UI prototype, or HTML reference for your project's UI. Triggers on "mockup", "prototype", "UI reference", "design a panel", "mock up", or any task producing a visual HTML file for later Unity UI Toolkit implementation.

Use when implementing Unity UI Toolkit code from a mockup, HTML reference, screenshot, or visual spec. Triggers on "implement this mockup", "translate to USS", "build this UI", "match the mock", "UI looks wrong", "fix the layout", "spacing is off", "doesn't look like the design", or any task turning a visual reference into Unity UI Toolkit USS/C# code.

Autonomous migration planning and execution. Takes a migration target (framework upgrade, API version bump, dependency major version, deprecation removal) and produces a phased migration plan with compatibility verification, then optionally executes via build's refactor mode. Triggers on /migrate, 'migration plan', 'upgrade X from Y to Z', 'remove deprecated', 'major version bump'.

Use when merging a PR after implementation is complete - verifies CI, runs local tests, checks repo safety, and monitors post-merge health. Triggers on 'merge pr', 'merge this', 'land this PR', or any task executing a PR merge.

Render the Crucible calibration ledger weekly report — the honest "Crucible caught N silent bugs" headline, verdict breakdown, per-skill severity rates, and the inflation detector. Triggers on "/ledger", "weekly report", "weekly ledger", "caught N", "quality ledger", "calibration report", "render the ledger".

Use when a full feature is assembled and you want to hunt cross-component bugs before final quality gate. Runs 5 parallel adversarial dimensions against the complete implementation diff. Triggers on 'inquisitor', 'hunt bugs', 'cross-component test', 'find integration issues', or automatically in build pipeline Phase 4.

Use when a design doc or implementation plan is finalized and you want a divergent creativity injection before adversarial review. Proposes the single most impactful addition.

Write a handoff doc for the next session — either continuing the current arc, or proposing the natural next pickup if the current arc is wrapping up.

The Book of Grudges — cross-session bug graveyard. Every fixed bug is recorded as a structured "grudge"; before touching code, skills query the grudgebook for the files in scope and surface past regressions as forced "DO NOT REPEAT" context. Read mode (pre-flight) and write mode (on bug resolution / fix(*) PR). Machine-local, per-repo, never committed. Triggers on /grudge, "check grudges", "record a grudge", "any past bugs here", "regression oracle", "bug graveyard".

Use when starting any conversation - establishes how to find and use skills, requiring skill activation before ANY response including clarifying questions

Use when a significant task completes and you need a retrospective, when starting a new task and want to consult past lessons, or when 10+ retrospectives have accumulated and skill improvements should be proposed

Use when implementation is complete, all tests pass, and you need to decide how to integrate the work - guides completion of development work by presenting structured options for merge, PR, or cleanup

Convert heavy document formats (PDF, Word, Excel, PowerPoint, and 10+ others) to token-efficient Markdown/CSV with structurally-aware digest compression. Use when Claude needs to read documents without burning excessive context budget. Triggers on /distill, 'distill this', 'convert to markdown', 'make this readable'.

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

Ecosystem-appropriate dependency vulnerability audit. Walks the project for package.json, Cargo.toml, requirements.txt, pyproject.toml manifests and runs npm/cargo/pip-audit. Produces a structured supply-chain signal with normalized severities. Used by build alongside quality-gate; can also be invoked standalone. Triggers on /dependency-audit, 'audit dependencies', 'scan vulnerabilities', 'check CVEs'.

Standalone instance-bug reviewer — runs a parallel finder fan-out + verify gate over a diff or a path and prints ranked, verified findings. Use when the user says "delve", "find bugs in this diff", "review this for bugs", "scan this file/subsystem for defects", "instance-bug sweep", or wants concrete reproducible defects (not a merge verdict, not systemic health). Works on a PR id, a base..head range, or a path, on any forge (GitHub, GitLab, Bitbucket, self-hosted).

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes

Multi-model consensus for high-stakes quality decisions. Opt-in MCP-based system that dispatches prompts to multiple LLM providers in parallel and synthesizes their responses. Used by quality-gate (stagnation judge, periodic red-team) and design (Challenger).

Read or update the per-repo arc-state file (docs/compass.md). Tracks current arc, last meaningful commit, open loops, next move, and don't-forget items. Auto-maintained by build, merge-pr, finish; read by getting-started. Use "compass read" to inspect project state, "compass update" to set a field, "compass doctor" to validate, "compass compress" when at cap. Triggers on "compass", "current arc", "project state", "what am I working on", "arc state", "where was I".

Shadow git checkpoint system for pipeline rollback. Creates working directory snapshots without modifying the project's git history. Invoked by build, quality-gate, and debugging orchestrators at pipeline boundaries.