Offline sweep: full-solution build 0 errors (824 pre-existing OTOPCUA0001
analyzer warnings live in driver test projects, none in LocalDb files);
no LiteDB/LocalCache code references remain (2 explanatory doc-comment lines
allowed); Runtime.Tests 407/0/31 twice (flagged intermittent not reproduced);
Host.IntegrationTests LocalDb subset 40/0/0. Full-solution test suite with
stash-baseline deferred to CI/live gate — infra-gated suites cannot run offline
on macOS. Not merged to master; live gate (Task 16) awaits operator go-ahead.