[CLI] Website CLI download links point to stale CLI preview release

[Wayne-Ch]

Problem

The Foundry Local website models page has CLI download links hardcoded to the old cli-preview-0.10.0 release.

Page:
https://www.foundrylocal.ai/models

Old link target:
https://github.com/microsoft/Foundry-Local/releases/tag/cli-preview-0.10.0

This can send users to an outdated CLI after newer preview releases are published.

Proposed solution

The website should not hardcode a specific CLI preview release tag.

Instead, it should resolve the latest cli-preview-* GitHub release at build/server time, generate platform-specific CLI links from that release's assets, and fall back to the general Foundry Local releases page if release discovery fails.

Expected behavior:

• Windows CLI links to the latest Windows CLI asset.
• macOS CLI links to the latest macOS CLI asset.
• Linux CLI links to the latest Linux CLI asset.
• If release discovery fails, all CLI download links fall back to https://github.com/microsoft/Foundry-Local/releases.

Follow-up requirement

After publishing a new CLI preview release, the release pipeline should trigger a website/Vercel redeploy so the build-time resolver refreshes immediately.

[Wayne-Ch]

Proposed fix is in #925.

The PR updates the website to resolve the latest cli-preview-* GitHub release and generate platform-specific CLI download links for Windows, macOS, and Linux, with a fallback to the general releases page if release discovery fails.

I validated the PR by building the website and confirming that /models resolves the current cli-preview-0.10.2 assets for all three platforms.

Remaining follow-up: wire the CLI release pipeline to trigger a website redeploy after each new CLI preview release.