[kieronlanning]

Summary

Takes Purview.BuildSdk 1.3.0 and bumps this repository's own point release.

File	Change
global.json	Purview.BuildSdk 1.2.0 → 1.3.0
package.json	version 13.6.4-preview.2 → 13.6.4-preview.3

Why 1.3.0

Purview.BuildSdk 1.3.0 is the current stable release on nuget.org; this repository was pinned to 1.2.0. 1.3.0 stops recompiling every project on every build, so every consumer should pick it up.

Version accounting

13.6.4-preview.3 is the next point release after 13.6.4-preview.2. The newest release tag here is v13.6.4-preview.2, which 13.6.4-preview.2 already occupies, so the bump does not collide with an existing tag and no tag was pushed by hand - the release pipeline owns tagging (v{version}) when this merges. n- The patch stays at 13.6.4 because it tracks Aspire (Aspire.AppHost.Sdk` 13.6.4); the preview counter is what advances, matching how every earlier preview in this repository was cut.

Validation

• dotnet restore src/AspireC4.slnx succeeds against Purview.BuildSdk 1.3.0.
• Diff is limited to the version pins: no source, package-content or workflow changes.

Merge

Left open for review - this PR is not merged.