n8n

# Development Workflow for n8n Feature Implementation

## Current Status: ✅ Ready for PR

### Summary
- **Linear Ticket:** N8N-1234 - Add OAuth2 support for GitHub nodes
- **Branch:** `n8n-1234-github-oauth2`
- **Build Status:** ✅ Success (no errors in build.log)
- **Code Quality:** ✅ Lint & Typecheck passed
- **Tests:** ✅ 42/42 unit tests passing
- **E2E:** ✅ Playwright tests passing with @mode:postgres tag

### Implementation Details
```typescript
// packages/nodes-base/nodes/Github/Github.node.ts
import { IOAuth2Options } from 'n8n-workflow';

export class Github implements INodeType {
  description: INodeTypeDescription = {
    displayName: 'GitHub',
    name: 'github',
    icon: 'file:github.svg',
    group: ['input'],
    version: 1,
    subtitle: '={{$parameter["operation"]}}',
    defaults: {
      name: 'GitHub',
    },
    inputs: ['main'],
    outputs: ['main'],
    credentials: [
      {
        name: 'githubOAuth2Api',
        required: true,
      },
    ],
    properties: [
      // ... existing properties
    ],
  };
}

Test Coverage

# Test output summary
PASS packages/nodes-base/nodes/Github/test/Github.node.test.ts
  ✓ should authenticate with OAuth2 (342ms)
  ✓ should fail with invalid token (201ms)
  ✓ should refresh expired token (512ms)

# E2E test with specific mode
pnpm test:container:postgres --grep "GitHub OAuth2"
✓ GitHub OAuth2 flow @mode:postgres (4.2s)

PR Checklist

• [x] Linear ticket referenced: https://linear.app/n8n/issue/N8N-1234
• [x] API types updated in @n8n/api-types
• [x] i18n translations added
• [x] No any types used
• [x] CSS variables used (no hardcoded px)
• [x] data-test-id attributes added
• [x] Enterprise features tagged with @licensed where applicable

Next Steps

1. Create draft PR: gh pr create --draft
2. Add reviewers from backend and frontend teams
3. Link to Linear ticket in PR description