Update Orion notebooks with artifact handler support

[devin-ai-integration]

Summary

This PR updates the Orion notebook examples to use the new artifact handler pattern from the VLM Run SDK:

• 13_orion_3d_reconstruction.ipynb - 3D reconstruction from images/video
• 14_orion_document_understanding.ipynb - OCR, layout detection, redaction, classification

Key Changes

3D Reconstruction Notebook:

• Switched from PLY to SPZ file format for Gaussian splat models
• Added spz library dependency (Niantic Labs) for loading compressed splat files
• Updated helper functions: download_spz, load_gaussian_splat_spz, render_gaussian_splat
• Uses vlmrun.types.ReconRef for reconstruction responses
• Uses client.artifacts.get() to retrieve 3D model artifacts

Document Understanding Notebook:

• Updated to use vlmrun.types.ImageRef for image responses
• Uses client.artifacts.get() to retrieve image artifacts (e.g., redacted documents)
• Modified chat_completion helper to return session_id for artifact retrieval
• Cleared cell outputs for cleaner notebook state

Review & Testing Checklist for Human

• Critical: Verify the spz library installation works correctly in Colab (clones from GitHub and installs)
• Critical: Test 3D reconstruction example end-to-end - ensure SPZ files download and render correctly with Plotly
• Critical: Test document redaction example - verify client.artifacts.get() returns the blurred image correctly
• Confirm OCR, layout detection, and multi-document classification examples still work
• Verify all imports resolve correctly (vlmrun.types.ReconRef, vlmrun.types.ImageRef)

Recommended test plan: Open each notebook in Google Colab, run all cells sequentially, and verify:

1. 3D reconstruction produces interactive Plotly visualizations
2. Document redaction returns properly blurred images
3. No import errors or API failures occur

Notes

• The large diff size is due to notebook JSON reformatting combined with functional changes
• The artifact handler pattern (client.artifacts.get(session_id, object_id)) is a new SDK feature for retrieving generated files
• Requested by: [email protected]
• Link to Devin run: https://app.devin.ai/sessions/779fc6b651384f7483cc20530885c0a6

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring