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Giuliano Silvestro 29f4ad97d6 Phase 4a: deployment-provisioning choreography saga

Wire a full tenant deployment as one orchestrated, compensating saga:
mark → create droplet → wait active → register in inventory → link to
deployment → point DNS → activate. A failure anywhere rolls the whole
thing back — droplet destroyed, DNS reverted, deployment moved to
cancelled.

- New lifecycle state `provisioning`; deployments created via the
  provision path enter here and only reach `active` once the saga's
  ActivateDeployment step runs.
- Four new steps: MarkDeploymentProvisioning (owns the deployment's
  failure state), LinkDeploymentResource, PointDeploymentDns,
  ActivateDeployment.
- Provisioning.provision_deployment/2 assembles + starts the saga.
- DeploymentController: POST /deployments with provision:true creates
  in `provisioning` and kicks the saga (202); GET /deployments/:id now
  returns the provisioning saga + per-step progress.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-20 20:44:49 +10:00

config

Phase 3: tenant invoice rollup

2026-05-20 15:32:21 +10:00

lib

Phase 4a: deployment-provisioning choreography saga

2026-05-20 20:44:49 +10:00

priv

Phase 3: cost-vs-revenue dashboard

2026-05-20 15:57:08 +10:00

test

Phase 0 scaffold: arcadia-cloud Phoenix service