chore: import upstream snapshot with attribution

2026-07-13 13:02:50 +08:00
commit 0fc60fdcb1
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+
+<!--- Provide a general summary of your changes in the Title above -->
+
+#### Description
+<!--- Describe your changes in detail -->
+
+#### Related Issue
+<!--- This project only accepts pull requests related to open issues -->
+<!--- If suggesting a new feature or change, please discuss it in an issue first -->
+<!--- If fixing a bug, there should be an issue describing it with steps to reproduce -->
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+
+#### Motivation and Context
+<!--- Why is this change required? What problem does it solve? -->
+
+#### Requires Documentation Change
+<!--- Please indicate if these changes will require updates to documentation, and if so, specify what changes are required -->
+
+#### How Has This Been Tested?
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, and the tests you ran to -->
+<!--- see how your change affects other areas of the code, etc. -->
+
+#### Types of changes
+<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] Refactor (non-breaking change which improves implementation)
+- [ ] Performance (non-breaking change which improves performance. Please add associated performance test and results)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to change)
+- [ ] Non-functional change (xml comments/documentation/etc)
+
+#### Checklist:
+<!--- The following is a checklist of items that MUST be completed before a PR is accepted -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+- [ ] My code follows the code style of this project.
+- [ ] I have read the **CONTRIBUTING** [document](https://github.com/QuantConnect/Lean/blob/master/CONTRIBUTING.md).
+- [ ] I have added tests to cover my changes. <!--- If not applicable, please explain why -->
+- [ ] All new and existing tests passed.
+- [ ] My branch follows the naming convention `bug-<issue#>-<description>` or `feature-<issue#>-<description>`
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