Remove unused mypy dependency

[Copilot]

Mypy was configured as a dev dependency but not used in pre-commit hooks, CI workflows, or any build scripts.

Changes:

• Removed mypy~=1.18.2 from pyproject.toml dev dependencies
• Removed mypy cache patterns (.mypy_cache/, .dmypy.json, dmypy.json) from .gitignore
• Regenerated uv.lock to remove mypy and mypy-extensions packages (56 lines removed)

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• astral.sh
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Original prompt

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This section details on the original issue you should resolve

<issue_title>删除mypy，目前并没有使用.</issue_title>
<issue_description>- .gitignore

• pyproject.toml
• uv.lock

这几个需要更新。</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes 删除mypy，目前并没有使用. #123

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[Copilot]

Pull request overview

This PR removes the unused mypy type checker dependency from the project. Mypy was configured as a development dependency but was not actually being utilized in pre-commit hooks, CI workflows, or build scripts.

Key changes:

• Removed mypy from development dependencies in pyproject.toml
• Cleaned up mypy-related ignore patterns from .gitignore
• Updated uv.lock to reflect the removal of mypy and its transitive dependency mypy-extensions

Reviewed changes

Copilot reviewed 1 out of 3 changed files in this pull request and generated no comments.

File	Description
pyproject.toml	Removed mypy~=1.18.2 from the dev optional dependencies list
.gitignore	Removed mypy cache patterns (.mypy_cache/, .dmypy.json, dmypy.json) and updated the Python tools comment to reflect mypy's removal
uv.lock	Removed 56 lines containing the mypy and mypy-extensions package definitions and their associated wheel distributions

The changes are clean, consistent, and properly synchronized across all three files. No issues were identified during the review.

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