Files
lmxopcua/docs/plans
Joseph Doherty bc611969a9 docs(mesh-phase4): plan — cut the driver-side ConfigDb connection
Phase 4 of the per-cluster mesh program. Removes the four remaining driver-side
ConfigDb consumers + the registration itself so a driver-only node boots with no
ConfigDb connection string:

- ConfigDb registered iff hasAdmin (Program.cs); driver-only requires none
- driver-only ⇒ FetchAndCache mandatory (validator)
- DbHealthProbeActor not spawned on driver-only; DbReachable=true constant
  (client-visible ServiceLevel change — a healthy DB-less node publishes 240/250
  with central down, per user decision 2026-07-23)
- DriverHostActor: nullable factory, drop redundant SQL ack-writes (central's
  PersistNodeAck is the ack system of record)
- EfAlarmConditionStateStore → LocalDbAlarmConditionStateStore (new replicated
  alarm_condition_state table)

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-23 11:22:48 -04:00
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