[hengtaoguo]

Description

Start with a short description of what the PR does and how this is a change from
the past.

The rest of the description includes relevant details and context, examples:

• why is this change being made,
• the problem being solved and any relevant context,
• why this is a good solution,
• some information about the specific implementation,
• shortcomings of the solution and possible future improvements.

If the change fixes a bug or a Github issue, please include a link, e.g.,:
FIXES: b/123456
FIXES: #123456

You can also provide a comma-separated list. If you don't want to close a bug but
simply to reference it, use BUGS, e.g.:
BUGS: b/123456

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This label is used for administrative purposes. Please do not add it manually.

Notice 2: For external contributions, our settings currently require an approval from a MaxText maintainer to trigger CI tests.

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If you need them (plus the TPU7X suite) on your PR, add the scheduled-only label; the full pipeline
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Tests

Please describe how you tested this change, and include any instructions and/or
commands to reproduce.

Checklist

Before submitting this PR, please make sure (put X in square brackets):

• I have performed a self-review of my code. For an optional AI review, add the gemini-review label.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have run end-to-end tests and provided workload links above if applicable. (Note: New PRs get skip-ci-tests so only CPU/lint/docs checks run during review; a bot removes it after 2 approvals on a 1-commit PR to run TPU/GPU suites, or remove it yourself / ask a maintainer on fork PRs to run them sooner.)
• I have made or will make corresponding changes to the doc if needed, including adding new documentation pages to the relevant Table of Contents (toctree directive) as explained in our documentation.

[codecov]

Codecov Report

❌ Patch coverage is 27.84091% with 1524 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/maxtext/m3/diffuser_pipelines/wan_pipeline.py	18.35%	635 Missing and 1 partial ⚠️
...text/checkpoint_conversion/to_maxtext_diffusers.py	19.79%	234 Missing and 1 partial ⚠️
src/maxtext/m3/models/lingbot/pipeline_lingbot.py	27.75%	177 Missing ⚠️
...c/maxtext/m3/models/lingbot/transformer_lingbot.py	39.48%	139 Missing and 2 partials ⚠️
src/maxtext/m3/models/lingbot/compare_reference.py	0.00%	108 Missing ⚠️
...axtext/m3/models/lingbot/reference_dump_lingbot.py	0.00%	82 Missing ⚠️
...rc/maxtext/m3/diffuser_pipelines/pipeline_utils.py	37.70%	76 Missing ⚠️
src/maxtext/m3/models/lingbot/camera_lingbot.py	17.80%	60 Missing ⚠️
...xtext/checkpoint_conversion/utils/param_mapping.py	95.62%	5 Missing and 2 partials ⚠️
...rc/maxtext/m3/models/lingbot/checkpoint_lingbot.py	88.23%	1 Missing and 1 partial ⚠️

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