Add Feature

Add Feature: $ARGUMENTS

Create a complete new feature with component, tests, and integration.

Process

1. Create Isolated Worktree

TIMESTAMP=$(date +%Y%m%d-%H%M%S)
WORKTREE_PATH="../add-feature-$ARGUMENTS-$TIMESTAMP"
git worktree add "$WORKTREE_PATH" -b "feature-$ARGUMENTS-$TIMESTAMP"
cd "$WORKTREE_PATH"

2. Create Feature Files

Generate based on feature name (convert to PascalCase for component):

• components/[FeatureName].tsx - Main React component with data-testid
• components/[FeatureName].test.tsx - Unit tests (happy path, edge cases, errors)
• tests/e2e/[feature-name].spec.ts - E2E tests with Playwright
• Update types/index.ts if new types needed

3. Integrate into App

• Import and add component to appropriate page/layout
• Wire up props and event handlers

4. Validate

Run in order, collect all errors:

npm run build
npm run lint
npm test
npm run test:e2e

5. Report and Prompt

On success: Show summary, prompt to merge or keep for review On failure: Categorize errors (build/lint/test), provide remediation steps

6. Cleanup

If merging:

git checkout main
git merge "feature-$ARGUMENTS-$TIMESTAMP"
git worktree remove "$WORKTREE_PATH"

Component Template

'use client';

import { useState } from 'react';

interface FeatureNameProps {
  // props
}

export default function FeatureName({}: FeatureNameProps) {
  return (
    <div data-testid="feature-name">
      {/* content */}
    </div>
  );
}

Test Patterns

• Use data-testid for selectors
• Test: rendering, user interactions, props, edge cases, accessibility
• Clear localStorage in E2E beforeEach