feat(vlm): add num_tokens as attribtue for VlmPrediction

[ElHachem02]

Checklist:

• Documentation has been updated, if necessary.
• Examples have been added, if necessary.
• Tests have been added, if necessary.

[github-actions]

❌ DCO Check Failed

Hi @ElHachem02, your pull request has failed the Developer Certificate of Origin (DCO) check.

This repository supports remediation commits, so you can fix this without rewriting history — but you must follow the required message format.

---

🛠 Quick Fix: Add a remediation commit

Run this command:

git commit --allow-empty -s -m "DCO Remediation Commit for ElHachem02 <[email protected]>

I, ElHachem02 <[email protected]>, hereby add my Signed-off-by to this commit: 311287f562923854bd056b57ec94d1eacf17cec0"
git push

---

🔧 Advanced: Sign off each commit directly

For the latest commit:

git commit --amend --signoff
git push --force-with-lease

For multiple commits:

git rebase --signoff origin/main
git push --force-with-lease

More info: DCO check report

[dosubot]

Related Documentation

Checked 3 published document(s). No updates required.

^{How did I do? Any feedback?}  

[mergify]

Merge Protections

Your pull request matches the following merge protections and will not be merged until they are valid.

🟢 Enforce conventional commit

Wonderful, this rule succeeded.

Make sure that we follow https://www.conventionalcommits.org/en/v1.0.0/

• title ~= ^(fix|feat|docs|style|refactor|perf|test|build|ci|chore|revert)(?:\(.+\))?(!)?:

[codecov]

Codecov Report

❌ Patch coverage is 0% with 23 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
docling/utils/api_image_request.py	0.00%	12 Missing ⚠️
docling/models/api_vlm_model.py	0.00%	3 Missing ⚠️
.../models/vlm_models_inline/hf_transformers_model.py	0.00%	3 Missing ⚠️
.../vlm_models_inline/nuextract_transformers_model.py	0.00%	3 Missing ⚠️
docling/models/vlm_models_inline/vllm_model.py	0.00%	2 Missing ⚠️

📢 Thoughts on this report? Let us know!