# Phase 10: Skill Registry

**Purpose:** Define, store, version, and retrieve reusable routine templates.
**TS Module:** `src/tier2-primitives/routines/skill-registry.ts`

## What It Does

CRUD for skills with versioning, tagging, and search.
Skills are the "routines" of the system — patterns that accumulate and improve.

## Skill Structure

```yaml
id: code-review
name: Code Review
version: 0.1.0
steps:
  - id: step-1
    label: Read the code
    instruction: Thoroughly read and understand the code
    expectedOutcome: Complete understanding
    validationCriteria: []
tags: [code-review, engineering]
```

## Usage

```bash
npx tsx src/index.ts skills list
npx tsx src/index.ts skills create "Skill Name" --description "..." --steps "a,b,c"
npx tsx src/index.ts skills inspect <skill-id>
npx tsx src/index.ts skills evolve <skill-id>
npx tsx src/index.ts skills sharpen
```

## Key Rules

- Skills are the executable layer of memory
- Update via TS CLI or directly in SKILLS/*.md files
- Versions bump automatically on evolution
- Max 100 history entries per skill (oldest dropped)