v0.22.0

Features

• api: Add file upload support for /upload endpoint — file parameter now accepts FileTypes (binary files) instead of str
• api: Conditional multipart encoding — sends multipart/form-data when a file is provided, application/json when not
• api: Various API updates and type reorganization

Bug Fixes

• lint: Exclude custom lib/ and tests/e2e/ from strict pyright/mypy checks
• tests: Fix E2E import paths for relocated types

Full Changelog: v0.21.0...v0.22.0