chore: bump arcbox version to v0.6.9

[arcbox-labs]

Automated update from arcbox v0.6.9.

[greptile-apps]

Greptile Summary

Updates the embedded ArcBox daemon reference from v0.6.6 to v0.6.9 and synchronizes the generated protobuf documentation.

• Changes arcbox.version to v0.6.9.
• Updates the generated description of the networkReady setup phase without changing its wire value or behavior.

Confidence Score: 5/5

The PR appears safe to merge, with the daemon version and generated protobuf client updated consistently.

The generated Swift change is documentation-only, the setup-phase mapping remains compatible, and no concrete build, runtime, or security failure was identified.

Important Files Changed

Filename	Overview
Packages/ArcBoxClient/Sources/ArcBoxClient/Generated/api.pb.swift	Updates only the generated documentation for SetupStatus.networkReady; no generated API or wire behavior changes.
arcbox.version	Advances the embedded daemon version pin from v0.6.6 to v0.6.9 through the repository’s atomic bump workflow.

_{Reviews (1): Last reviewed commit: "chore: bump arcbox version to v0.6.9" | Re-trigger Greptile}