Implement @lytics/playwright-journey package

[prosdev]

Branch: feat/implement-journey-package

Priority: Medium

Estimate: 3-4 hours

Parent Epic: #1

Dependencies: #2

Description

Migrate journey-driven test generation tools from lytics-playwright/tools/ to enable automated test scaffolding from journey metadata. This package fetches journey definitions from Firestore or local JSON and generates properly annotated Playwright test files with the correct file structure, imports, and Page Object Model scaffolding.

Acceptance Criteria

• Can generate test files from journey metadata (Firestore or local JSON)
• Validates journey schema before generation
• Generates tests with proper annotations (testSuiteName, journeyId, testCaseId)
• Creates correct file paths following naming conventions
• CLI tool works: pnpm gen:test --journey-id <id>
• Unit tests pass with mocked Firestore
• Published to GitHub Packages
• README includes CLI usage and journey schema documentation

Technical Requirements

• Migrate generate-test.ts script to JourneyGenerator class
• Implement Firestore journey metadata fetching with proper authentication
• Add journey validation logic (schema compliance)
• Create test scaffold template with proper imports and structure
• Add kebab-case conversion for file/folder naming
• Support both interactive CLI and programmatic usage
• Handle errors gracefully (missing journey, invalid schema, etc.)

Files to Migrate

• tools/generate-test.ts → packages/journey/src/generator/JourneyGenerator.ts
• docs/generated/journeys.json → packages/journey/examples/journeys.json