v0.9.0

Highlights

• SDK auto-heartbeat: Run handles now automatically send heartbeats on a background thread when owned by the SDK, eliminating the need for manual heartbeat management.
• Automated release notes: GitHub Releases are now auto-generated with AI-highlighted summaries and native PR lists, streamlining the release process.

What's Changed

Other changes

• ci(release): auto-generate GitHub Release notes (Claude highlights + native PR list) by @richardwei6 in #52
• feat(sdk): auto-heartbeat thread on SDK-owned Run handles by @richardwei6 in #53

Full Changelog: v0.8.2...v0.9.0