1.0.1

Remove local API key storage and move auth to Cloudflare Worker

- Remove api_key field from CliConfig and LastfmApiClient
- Add /auth/url endpoint to worker for getting auth URL
- Update auth flow to use worker endpoints exclusively
- Fix auth signature calculation to include api_key parameter
- All API credentials now stored only in Cloudflare Worker environment
- CLI no longer has access to or stores API keys/secrets

This improves security by centralizing credential management in the worker.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>