Optimize time-series validation and prepare v1.0.2 release

[HadenSmith]

Summary

• Reduce irregular time-series table validation from repeated full-table scans to targeted O(1) ordering checks and deferred bulk validation.
• Preserve validation correctness after row edits, series replacements, resets, and large-series rebuilds.
• Prepare shared assembly, package, citation, CodeMeta, documentation, and release-note metadata for v1.0.2.
• Ship the hardened SoftwareUpdate updater payload at file version 1.0.2.0 so consuming applications can replace the installed updater safely.

Validation

• dotnet restore WPF-Framework.sln
• dotnet build WPF-Framework.sln -c Release --no-restore /p:Version=1.0.2 (0 warnings)
• SoftwareUpdate.Updater.Tests: 73 passed
• SoftwareUpdate.Tests: 274 passed
• Full Release suite: 6,967 passed, 6 established upstream skips
• .\scripts\validate-code-xml-docs.ps1 -Configuration Release
• All four 1.0.2 NuGet packages packed and inspected
• Support installed into a clean WPF consumer with all four updater files copied
• Updater executable and DLL report file version 1.0.2.0 and product version 1.0.2