Build the first chapter of Aster's MissionControl example in Python in the
current workspace.

Sources:
- https://sdk.getaster.now/docs/quickstart/mission-control
- https://github.com/aster-rpc/aster-rpc/tree/main/examples/python/mission_control
- https://sdk.getaster.now/docs/bindings/python

Read the walkthrough and inspect the public example source. Focus on the first
agent check-in and its unary status call. Use the request types, service name,
method name, and response shape defined there rather than making up a different
contract. Do not implement later chapters yet.

Use published package versions compatible with the source you select, and
record the Aster release, Python version, and example source revision. If they
do not agree, report the mismatch and stop instead of silently rewriting the
API or depending on a private repository.

Create an isolated environment, the necessary shared types and service, a
control-plane process, an agent process, and a README with exact commands.
Have the control plane print its actual Aster address, and configure the agent
to call that address. Use the tutorial's development configuration for a local
demonstration and document that it is not a production security setup. Do not
open public firewall ports or alter machine-wide networking settings.

Run both processes locally and verify the chapter's expected check-in/status
response over Aster. Document what was observed. Stop the processes you started
after verification unless I ask you to keep them running. Describe how to repeat
the demonstration across two machines, but do not claim that was tested unless
you actually have access to and use two machines.

Report the files created, versions and source revision, commands run, actual
response, and anything that prevented successful execution. Do not substitute
a mocked response for a working Aster call.

This prompt is a draft for the documentation design preview and has not yet been
validated in a coding harness.