fix: publish managed service APIs

[motatoes]

The merged managed-service APIs cannot be consumed from npm yet: the published CLI 0.7.2 predates the compiler changes, while @opencomputer/agent only exists through 0.6.0. This leaves diggerhq/triage-example unable to install or compile despite requesting 0.7.2.

This publishes the merged contract by:

• bumping @opencomputer/agent from 0.6.0 to 0.7.2
• bumping @opencomputer/cli from 0.7.2 to 0.7.3
• keeping @opencomputer/create-start in lockstep with the CLI at 0.7.3
• synchronizing both package lockfiles

Verification:

• package version contract
• agent tests: 14 passed
• CLI tests: 85 passed
• create-start tests: 2 passed

Remaining gate: merge to main so the package publication workflow publishes the new versions.