[Model] Add LingBot-Vision Model

[IMvision12]

Add LingBot-Vision

What does this PR do?

Adds LingBot-Vision, a self-supervised ViT vision backbone for dense spatial perception, trained with masked boundary modeling on top of a DINOv3-style architecture (RoPE,
storage tokens, SwiGLU, LayerScale).

• Paper: Vision Pretraining for Dense Spatial Perception (https://arxiv.org/abs/2607.05247) (arXiv 2607.05247)
• Original code/weights: https://github.com/robbyant/lingbot-vision

[github-actions]

Thank you for your contribution 🤗!

CI Security Gate — automatic approval blocked

This PR was not automatically approved for CI because the security gate failed.

Possible reasons:

• The PR touches 50 or more files — only PRs with fewer than 50 changed files are automatically approved
• A changed file is outside the allowed directories (src/, tests/, docs/, utils/), has a disallowed extension (only .py, .txt, .md permitted outside tests/ and docs/), or is not .md/.yml inside docs/
• A new high-severity security issue was detected in the changed Python files (Bandit check)

See the workflow run for the exact violations.

A maintainer can review and manually approve CI if a finding is a false positive.

[github-actions]

[For maintainers] Suggested jobs to run (before merge)

run-slow: auto, lingbot_vision

[Rocketknight1]

cc @yonigozlan @molbap