docs: add diffusion feature and example image to README

[Kim-JeongHan]

Summary by CodeRabbit

• Documentation
  • Updated README to document two new capabilities: Diffusion-based Planning featuring guided reverse-diffusion sampling with value-based trajectory guidance, and Trajectory One-shot Inference enabling collision-aware trajectory generation from start/goal constraints in a single inference call.

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

Documentation update to README.md that adds descriptions of two new features: Diffusion-based Planning with value-based trajectory guidance and Trajectory One-shot Inference for collision-aware trajectory generation. No code changes or deletions.

Changes

Cohort / File(s)	Summary
Documentation README.md	Added two new feature descriptions: Diffusion-based Planning and Trajectory One-shot Inference under the Features section.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch chore/readme-diffusion-docs

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}