CLI 0.4.0 — External runner daemon support

This minor release updates the CLI and local daemon protocol for the current Cloud Agents runtime contracts.

Highlights

• Added external runner daemon protocol support.
• Updated the standalone CLI binary against the latest shared SDK contracts.
• Kept local daemon integrations aligned with current API, chat, and runtime metadata shapes.

Notes

• Users running local daemon-backed agents should update their CLI binary before using external runner workflows.