Describe the Release Gate in the delivery example as the Go service it is #234

Parent

#195

What to build

spec/v1/examples/delivery/delivery.project.yml declares the Release Gate as a Node service: runtime: node, 128Mi, writablePaths: [/tmp], probes on /ready and /live, startupBudget: 20s. The real Release Gate is the Go binary in JorisJonkers-dev/delivery, and its project file (deploy/delivery.project.yml, landed in JorisJonkers-dev/delivery#7) declares it as:

• runtime: none
• memory: 64Mi, cpu: 25m
• no writable paths
• readiness /readyz, liveness /healthz
• startupBudget: 10s

Bring the example in line with the real project, so the worked example and its oracles describe the service the estate deploys. Use the spec-change skill: the example's expected/ oracles, the rendered trees and both implementations' parity move with it.

Acceptance criteria

• The delivery example's release-gate Process matches JorisJonkers-dev/delivery's deploy/delivery.project.yml.
• Its expected/ oracles and every rendered tree that includes it are updated by hand (never regenerated from an implementation), and both implementations agree with them.
• npm run verify and the emf job are green.

Blocked by

None (can start immediately).