v0.1.0-beta.79

What's Changed

• refactor(agent): migrate to Rig 0.40 by @wey-gu in #250
• fix(agent): restore GPT-5.6 discovery and harden Rig 0.40 by @wey-gu in #252

Full Changelog: v0.1.0-beta.78...v0.1.0-beta.79