Move all historian implementation files from Driver.Galaxy.Host/Backend/Historian/
to Driver.Historian.Wonderware/Backend/. Sidecar now owns the aahClientManaged /
aahClientCommon SDK references; Galaxy.Host project-references the sidecar so
MxAccessGalaxyBackend keeps building until PR 7.2 retires Galaxy.Host entirely.
10 source files moved (preserving git history via git mv):
IHistorianDataSource, HistorianDataSource, HistorianClusterEndpointPicker,
HistorianClusterNodeState, HistorianConfiguration, HistorianEventDto,
HistorianHealthSnapshot, HistorianQualityMapper, HistorianSample,
IHistorianConnectionFactory.
2 historian tests moved alongside (HistorianClusterEndpointPickerTests,
HistorianQualityMapperTests). Sidecar test project now hosts 29 tests (1 PR 3.1
smoke + 28 moved historian tests, all passing).
Galaxy.Host's remaining 6 historian-flavored tests (HistorianWiringTests,
HistoryReadAtTimeTests, HistoryReadEventsTests, HistoryReadProcessedTests)
keep passing via the project reference — using directives updated to reach
the new namespace.
Sidecar deliberately speaks no Core.Abstractions — its surface is the legacy
List<HistorianSample> shape; PR 3.4's .NET 10 client translates to the
Core.Abstractions shapes added in PR 1.1.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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