Release 0.3.4

[csa7mdm]

Version bump for 0.3.4: Directory.Build.props, server.json, README status, the article's JSON-LD softwareVersion, and the CHANGELOG [Unreleased] section becomes [0.3.4] - 2026-09-25. It adds CHANGELOG entries for the container image and the docs site, which their PRs didn't include.

In this release (#45–#51):

• Fix: affected-test selection missed tests on multi-targeted projects.
• NuGet package edges and Directory.Packages.props narrowing.
• Origin/Host validation on --http.
• Sandboxed container image, with CI proving each flag.
• Documentation site on GitHub Pages.

main CI is green on all three jobs. The new sandbox job on ubuntu-latest listed 37 tools, passed 7/7 with the flags, and failed exactly 6/7 without them.

After merge:

1. Tag v0.3.4. This triggers the NuGet release, and the container docs build from this tag.
2. Once 0.3.4 is on NuGet, run mcp-publisher publish.

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