Description

This PR introduces a comprehensive testing suite and fully containerizes the development and CI/CD workflows.

Changes

🧪 Testing & Refactoring

• Test Suite: Integrated vitest and added 10+ test cases covering JSON, XML, Plain Text, and various edge cases.
• Architecture: Refactored src/index.ts to export the router and created src/worker.ts as the entry point to enable unit testing.
• CI/CD Migration: Migrated GitHub Actions (test.yml, deploy.yml) to run inside the Docker environment, ensuring parity between local dev and production pipelines.

🐳 Docker & Dev Experience

• Dockerized CI/CD: Added git to the Dockerfile to support semantic-release and other tools within the container.
• Docker-First Workflow: Enabled package-lock.json syncing between host and container.
• Dockerfile Refactor: Simplified dependency management by removing global wrangler installation in favor of npx.
• Local Dev: Added a npm run dev script and updated README.md with current API examples (v2.x).

⚙️ Maintenance & Ops

• Version Locking: Locked wrangler to 4.69.0 across the entire stack.
• Environment Support: Added CLOUDFLARE_API_TOKEN support to docker-compose.yml for container-based deployments.
• Workflow Optimizations: Added concurrency controls to GitHub Actions and enabled Action tracking in dependabot.yml.
• Cleanup: Standardized .gitignore and .dockerignore patterns.