Release v3.2.0

What's Changed in v3.2.0

✨ Features

• tool/api-scalar: add x-lastfm-sk header support for authenticated write methods (closes #100)

📚 Documentation

• docs: document session key (sk) usage across all 10 write methods and web auth flow (closes #104)
• docs: document Last.fm callback URL setup prerequisites (closes #113)
• auth: deprecate auth.getMobileSession in favor of web authentication flow (closes #106)

🛠️ Tooling & Infrastructure

• tool/api-scalar: provide actionable startup error message when LASTFM_API_KEY is missing (closes #107)
• tooling: migrate linting and formatting to Biome (closes #112)

Full Changelog: v3.1.3...v3.2.0