Hot v2.6.8

What's Changed

• ai-agent skills, lang fixes, doc improvements by Curtis Summers (@csummers) in #83
• Task Timeout Improvements by Curtis Summers (@csummers) in #84
• api: durable run and task subscriptions for SDK use by Curtis Summers (@csummers) in #85
• Rust 1.97.1; crate dep bumps by Curtis Summers (@csummers) in #86

Full Changelog: v2.6.7...v2.6.8