[azure.ai.agents] Registry update for 1.0.0-beta.3

[azure-sdk]

Registry update for the azd-ext-azure-ai-agents_1.0.0-beta.3 release.

[Copilot]

Pull request overview

This PR registers the azd-ext-azure-ai-agents_1.0.0-beta.3 release in the extension registry so azd clients can discover and install the new build. It is a routine, mechanical release-registration change following the two-PR versioning convention (version bump PR already merged; this PR wires up published artifacts).

Changes:

• Adds the 1.0.0-beta.3 version entry for azure.ai.agents to registry.json, including per-platform artifact URLs and SHA-256 checksums.
• Updates the TestFigSpec.ts snapshot so the --type flag description for azd ai agent sample list includes the new azure.yaml template type (regenerated when the newer extension is installed during ext-registry-ci).

I verified the registry entry against the actual GitHub release: all six artifact SHA-256 digests, download URLs, and entry-point names match the published assets exactly, and the metadata (version, requiredAzdVersion, capabilities, providers, usage, examples, and the azure.ai.inspector dependency) matches extension.yaml. The changelog date 2026-07-03 matches the release and is not a future date. No issues found.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
cli/azd/extensions/registry.json	Adds the 1.0.0-beta.3 version block with artifacts/checksums that match the published release and metadata consistent with extension.yaml.
cli/azd/cmd/testdata/TestFigSpec.ts	Regenerated fig-spec snapshot reflecting the new azure.yaml value in the --type supported-values help text.