chore(domain): yourplatform.com → breakpilot.com

Apply the platform-domain decision (2026-05-18) to every manifest,
overlay, DNS template, README, and script in this repo.

Refs: M1.1

manifests/vm-control/tenant-registry.toml

@@ -3,7 +3,7 @@
 
 [[service]]
 name = "tenant-registry"
-image = "registry.yourplatform.com/tenant-registry:placeholder"
+image = "registry.breakpilot.com/tenant-registry:placeholder"
 port = 8080
 
 [service.placement]
@@ -15,6 +15,6 @@ cpu = 0.5
 
 [service.env]
 DATABASE_URL = "${secrets.TENANT_REGISTRY_DB_URL}"
-KEYCLOAK_ISSUER = "https://auth.yourplatform.com/realms/breakpilot-prod"
+KEYCLOAK_ISSUER = "https://auth.breakpilot.com/realms/breakpilot-prod"
 KEYCLOAK_ADMIN_USER = "${secrets.KEYCLOAK_ADMIN_USER}"
 KEYCLOAK_ADMIN_PASS = "${secrets.KEYCLOAK_ADMIN_PASS}"