Joseph Doherty f23cea201d fix(driver-focas): resolve Medium code-review finding (Driver.FOCAS-004) ...

DiscoverAsync now unconditionally emits SecurityClassification.ViewOnly
for every user-authored FOCAS tag.  Previously the SecurityClass was
tag.Writable ? Operate : ViewOnly, but WireFocasClient.WriteAsync always
returns BadNotWritable — advertising Operate misleads OPC UA clients
and the DriverNodeManager ACL layer into granting write permission on
nodes that can never be written.

Updated FocasCapabilityTests.DiscoverAsync_emits_pre_declared_tags to
assert ViewOnly for the writable-by-config tag so it matches the
corrected behaviour.

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

2026-05-22 09:26:24 -04:00

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