f0851af6b5
Honors the ADR-002 discriminator at OPC UA Read/Write dispatch time. Virtual tag reads route to the VirtualTagEngine-backed IReadable; scripted alarm reads route to the ScriptedAlarmEngine-backed IReadable; driver reads continue to route to the driver's own IReadable (no regression for any existing driver test). ## Changes DriverNodeManager ctor gains optional `virtualReadable` + `scriptedAlarmReadable` parameters. When callers omit them (every existing driver test) the manager behaves exactly as before. SealedBootstrap wires the engines' IReadable adapters once the Phase 7 composition root is added. Per-variable NodeSourceKind tracked in `_sourceByFullRef` during Variable() registration alongside the existing `_writeIdempotentByFullRef` / `_securityByFullRef` maps. OnReadValue now picks the IReadable by source kind via the new internal SelectReadable helper. When the engine-backed IReadable isn't wired (virtual tag node but no engine provided), returns BadNotFound rather than silently falling back to the driver — surfaces a misconfiguration instead of masking it. OnWriteValue gates on IsWriteAllowedBySource which returns true only for Driver. Plan decision #6: virtual tags + scripted alarms reject direct OPC UA writes with BadUserAccessDenied. Scripts write virtual tags via `ctx.SetVirtualTag`; operators ack alarms via the Part 9 method nodes. ## Tests — 7/7 (internal helpers exposed via InternalsVisibleTo) DriverNodeManagerSourceDispatchTests covers: - Driver source routes to driver IReadable - Virtual source routes to virtual IReadable - ScriptedAlarm source routes to alarm IReadable - Virtual source with null virtual IReadable returns null (→ BadNotFound) - ScriptedAlarm source with null alarm IReadable returns null - Driver source with null driver IReadable returns null (preserves BadNotReadable) - IsWriteAllowedBySource: only Driver=true (Virtual=false, ScriptedAlarm=false) Full solution builds clean. Phase 7 test total now 197 green.
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3.3 KiB