docs: Add GitHub Pages deployment to dynamo.github.io for release branches

[nvda-mesharma]

This PR adds deployment automation to deploy documentation to dynamo.github.io repository when pushing to release branches.

Walkthrough

A new deploy job was added to the GitHub Actions workflow for documentation generation. This job depends on the build-docs job, runs only on release branches, and deploys generated documentation to an external repository using a GitHub Pages action, with deployment details dynamically set from the branch and commit.

Changes

File(s)	Change Summary
.github/workflows/generate-docs.yml	Added a deploy job that downloads the docs artifact, extracts the branch name, and deploys documentation to an external repo using GitHub Pages.

Sequence Diagram(s)

sequenceDiagram
    participant GitHub Actions
    participant build-docs Job
    participant deploy Job
    participant ai-dynamo/dynamo.github.io Repo

    GitHub Actions->>build-docs Job: Trigger on push to release branch
    build-docs Job-->>GitHub Actions: Generate and upload docs artifact
    GitHub Actions->>deploy Job: Start if build-docs succeeds
    deploy Job->>deploy Job: Download docs artifact
    deploy Job->>deploy Job: Extract branch name from GITHUB_REF
    deploy Job->>ai-dynamo/dynamo.github.io Repo: Deploy docs via gh-pages action

Loading

1. Trying to resolve 404 issue
   https://****.pages.github.io/release/0.3.1/

The current condition if: startsWith(github.ref, 'refs/heads/release') only runs when pushing directly to a release branch, not on PRs targeting release branches.
For PRs, we need to check the target branch (github.base_ref) rather than the source branch (github.ref).

2. Adding a PR comment with the docs link

[github-actions]

📚 Documentation Preview

📖 View Latest Documentation: https://crispy-winner-3jnj38w.pages.github.io/release/0.3.1/pr-1542/

Latest Deployment:

• Commit: c41de578 (latest push)
• Target: release/0.3.1
• Updated: 6/30/25, 5:20 PM UTC

Note: This link always shows the documentation for the latest commit. It may take a few minutes for GitHub Pages to update after each push.

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Auto-updated by the documentation deployment workflow

[kmkelle-nv]

LGTM