ops: complete host-operator ramp-up on railiance01 (WP-0009 T10)

Live observe session verified SSH access, captured baseline and Critical
health/load findings (memory pressure, k3s API unavailable). RU checklist
closed; engagement phase operating; schedule enabled; no privileged changes.

engagements/pilots/eng-coulomb-railiance01-ho-001/ENGAGEMENT.yaml

@@ -3,24 +3,22 @@ kind: Engagement
 metadata:
   id: eng-coulomb-railiance01-ho-001
   request_id: engreq-coulomb-railiance01-ho-001
-  created: "2026-07-16"
-  updated: "2026-07-16"
+  created: '2026-07-16'
+  updated: '2026-07-16'
   workplan: KAIZEN-WP-0009
 status:
-  phase: staffing
-  # requested | quoting | funded | staffing | ramp_up | operating
-  # renewing | ramp_down | closed | cancelled
-  notes: "Phase 1 scaffold complete; pending access verify to enter ramp_up"
+  phase: operating
+  notes: T10 RU checklist complete 2026-07-16; first health Critical memory/load
 spec:
   client:
     id: coulomb
     billing_account: coulomb-ops-kai
   role:
     id: host-operator
-    version: "0.1.0"
+    version: 0.1.0
   targets:
-    - kind: host
-      id: railiance01
+  - kind: host
+    id: railiance01
   agent_definition:
     path: agent-host-operator.md
     derived_from: roles/host-operator/agent-definition.md
@@ -38,10 +36,10 @@ spec:
     contribute_metrics: false
     contribute_lesson: false
     human_approval_for:
-      - privileged_ops
-      - package_upgrade
-      - firewall_change
-      - reboot
+    - privileged_ops
+    - package_upgrade
+    - firewall_change
+    - reboot
     redaction_profile: default-host-ops
   commercial:
     currency: kai