Fixed Git LFS pointers overwritten as plain Git blobs

[huidongc]

Description

Fixed an Git LFS issue introduced by #5522

git clone git@github.com:isaac-sim/IsaacLab.git --branch develop
Cloning into 'IsaacLab'...
remote: Enumerating objects: 266967, done.
remote: Counting objects: 100% (9465/9465), done.
remote: Compressing objects: 100% (1826/1826), done.
remote: Total 266967 (delta 9156), reused 7649 (delta 7636), pack-reused 257502 (from 5)
Receiving objects: 100% (266967/266967), 288.76 MiB | 3.18 MiB/s, done.
Resolving deltas: 100% (194599/194599), done.
Encountered 30 files that should have been pointers, but weren't:
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-albedo.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-depth.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-rgb.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-rgba.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-semantic_segmentation.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-simple_shading_constant_diffuse.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-simple_shading_diffuse_mdl.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-isaacsim_rtx_renderer-simple_shading_full_mdl.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-newton_renderer-depth.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-newton_renderer-rgb.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-newton_renderer-rgba.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-albedo.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-depth.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-rgb.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-rgba.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-semantic_segmentation.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-simple_shading_constant_diffuse.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-simple_shading_diffuse_mdl.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/newton-ovrtx_renderer-simple_shading_full_mdl.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-albedo.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-depth.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-rgb.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-rgba.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-semantic_segmentation.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-simple_shading_constant_diffuse.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-simple_shading_diffuse_mdl.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-isaacsim_rtx_renderer-simple_shading_full_mdl.png
        source/isaaclab_tasks/test/golden_images/shadow_hand/physx-newton_renderer-depth.png

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have read and understood the contribution guidelines
• I have run the pre-commit checks with ./isaaclab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there

[isaaclab-review-bot]

🤖 Isaac Lab Review Bot

Summary

This PR fixes 30 Git LFS pointer files that were incorrectly stored as raw binary content instead of LFS pointers.

Analysis

• Type: Infrastructure fix (Git LFS)
• Files changed: 30 PNG files in source/isaaclab_tasks/test/golden_images/shadow_hand/
• Root cause: Issue introduced by PR #5522

Findings

✅ All files are appropriate for LFS tracking - These are test golden images (PNG files) which should be tracked via Git LFS
✅ No code changes - Only binary asset pointer fixes
✅ Well-documented - PR description clearly lists the 30 affected files from the git clone warning message
✅ Proper fix approach - Converts raw binary content back to proper LFS pointer format

Verdict

LGTM 👍 - This is a straightforward LFS pointer fix that resolves clone warnings. The fix is appropriate and the scope is correct.

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Automated review by Isaac Lab Review Bot

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Update (7840feb): Nice addition! The new pre-commit hook (check_git_lfs_pointers.sh) will prevent this class of issue from recurring. The hook is well-implemented with both incremental (per-file) and full-repo (git lfs fsck) modes. Still LGTM 👍