bump manager version to 4.2.1

[ltdrdata]

Security hardening (CSRF Content-Type gate, litellm supply chain detection PYSEC-2026-2), scanner git error categorization, and frontend handleFile signature compatibility fix.

Important

Do not merge this PR first. It depends on Comfy-Org/ComfyUI_frontend#11520 (CSRF GET→POST migration). A frontend build containing that PR must be merged and released before this bump is merged; otherwise the 4 migrated endpoints will break in the UI.

References:

• Diff: Comfy-Org/ComfyUI-Manager@4.1...4.2.1
• PyPI: https://pypi.org/project/comfyui-manager/4.2.1
• Frontend dependency: fix(manager): migrate 4 endpoints GET→POST for CSRF hardening ComfyUI_frontend#11520
• Previous: bump manager version to 4.1 #13156 (4.1), bump manager version to 4.1b8 #13108 (4.1b8), bump manager version to 4.1b6 #13022 (4.1b6)

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	comfyui-manager@​4.1 ⏵ 4.2	+1

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[coderabbitai]

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Reviewing files that changed from the base of the PR and between db85cf0 and 4afb843.

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• manager_requirements.txt

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📝 Walkthrough

Walkthrough

This pull request updates the comfyui_manager dependency version in manager_requirements.txt from version 4.1 to 4.2.1. The change affects a single line in the requirements file and represents a minor version bump that includes patch-level updates. No modifications to public APIs, exported entities, or other source files are present in this change.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately and concisely describes the main change: bumping the comfyui-manager dependency version from 4.1 to 4.2.1.
Description check	✅ Passed	The description is directly related to the changeset, providing context about the version bump including security improvements, supply-chain detection, and frontend compatibility notes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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