NativeData 0.2.0 Release Notes

Release

Completed v0.2.0 foundation hardening scope for quality, documentation, packaging metadata, and CI enforcement.

CI workflow at .github/workflows/ci.yml with required gates:
- dotnet build NativeData.slnx -warnaserror
- dotnet test NativeData.slnx
- dotnet publish samples/NativeData.AotSmoke/NativeData.AotSmoke.csproj -c Release -r win-x64 -p:PublishAot=true -p:PublishTrimmed=true
Release notes baseline template: docs/release-notes-template.md
SQL edge-case tests for:
- parameter prefix normalization (@, :, $)
- key-only update guard behavior
- null parameter values
- whitespace whereClause handling

Enabled XML documentation output in:
- src/NativeData.Abstractions/NativeData.Abstractions.csproj
- src/NativeData.Core/NativeData.Core.csproj
Added XML comments across public APIs in NativeData.Abstractions and NativeData.Core.
Added centralized package metadata baseline for packable projects in Directory.Build.props.
Aligned documentation and release process references across README, contributing guide, and release checklist.

Prevented invalid SQL generation in update operations by throwing InvalidOperationException when an entity map provides no non-key update assignments.

Added CI status badge and updated build commands in README.md.
Added CI section and gate details in CONTRIBUTING.md.
Updated v0.2 progress in docs/status-and-roadmap.md.
Updated release checklist and release PR template to reference release notes template and CI baseline workflow.

dotnet build NativeData.slnx -warnaserror: passed
dotnet test NativeData.slnx: passed
AOT smoke publish command:
- dotnet publish samples/NativeData.AotSmoke/NativeData.AotSmoke.csproj -c Release -r win-x64 -p:PublishAot=true -p:PublishTrimmed=true
- status: passed