Skill Create

Skill Create — Generate Skills from Codebase Patterns

Analyze the corbat-coco git history and source code to extract recurring patterns and generate reusable skill files.

Analysis Process

Step 1: Git History Analysis

# Recent commit patterns
git log --oneline -50 2>&1

# Most frequently changed files
git log --pretty=format: --name-only -100 | sort | uniq -c | sort -rn | head -20

# Commit message patterns (conventional commits)
git log --pretty=format:"%s" -100 | sed 's/:.*//' | sort | uniq -c | sort -rn

# Co-change patterns (files that change together)
git log --pretty=format: --name-only -50 | awk 'NF>0{print}' | paste - - | sort | uniq -c | sort -rn | head -20

Step 2: Code Pattern Analysis

# Most common import patterns
grep -rh "^import" src/ --include="*.ts" | sort | uniq -c | sort -rn | head -20

# Zod schema patterns
grep -rn "z\.object\|z\.string\|z\.number" src/ --include="*.ts" | wc -l

# Tool registration patterns
grep -rn "registry\.register\|registerAllTools" src/ --include="*.ts"

# Error handling patterns
grep -rn "catch.*error\|instanceof Error" src/ --include="*.ts" | wc -l

Step 3: Test Patterns

# Test file structure
find src/ -name "*.test.ts" | head -20

# Mock patterns used
grep -rn "vi\.mock\|vi\.fn\|vi\.spyOn" src/ --include="*.test.ts" | head -20

# Describe/it structure
grep -rn "^describe\|^  it\(" src/ --include="*.test.ts" | head -30

Skill Templates to Generate

Based on the analysis, generate skills for patterns found. Examples:

Detected: Conventional Commits Pattern

If feat:, fix:, chore: appear consistently → generate commit-convention skill

Detected: Tool Registration Pattern

If tools follow registerXxx(registry) → generate new-tool skill

Detected: Zod Config Pattern

If config schemas follow the same structure → generate add-config-option skill

Detected: Quality Analyzer Pattern

If analyzers in src/quality/analyzers/ follow a pattern → generate new-quality-analyzer skill

Skill Output Format

Generate each skill in .claude/skills/generated/<skill-name>/SKILL.md:

---
name: [detected-pattern-name]
description: [Inferred from pattern frequency and context]
---

# [Pattern Name]

*Auto-generated from git history analysis on [date]*
*Based on [N] occurrences in [N] commits*

## Pattern

[Describe the recurring workflow or convention]

## When to Apply

[Inferred trigger conditions]

## Steps

[Extracted from the most common execution sequence]

## Example from this codebase

\`\`\`typescript
// Actual example from src/...
[real code]
\`\`\`

## Related Files
- [files most commonly involved in this pattern]

Usage Options

/skill-create                     # analyze full history (last 100 commits)
/skill-create --commits 50        # analyze last 50 commits
/skill-create --focus tools       # focus on tool-related patterns
/skill-create --focus tests       # focus on testing patterns
/skill-create --focus config      # focus on configuration patterns

Output

After analysis, report:

## Skill Create Report

### Patterns Detected
| Pattern | Occurrences | Skill Generated |
|---------|-------------|-----------------|
| tool-registration | 12 | .claude/skills/generated/new-tool/ |
| zod-config-schema | 8 | .claude/skills/generated/add-config/ |
| vitest-mock-pattern | 15 | .claude/skills/generated/vitest-mocks/ |

### Skipped (insufficient data)
- [patterns with <3 occurrences]

### Review Recommended
- .claude/skills/generated/new-tool/SKILL.md

Generated skills are drafts — review and edit before using.