feat: add AGENTS.md, remove deprecated rule in ruff and update pre-commit task

[mjun0812]

This pull request updates several development dependencies and reorganizes documentation to streamline project guidelines and improve code quality enforcement. The most significant changes include updating pre-commit tool versions, consolidating coding style documentation, and cleaning up code quality rule references.

Tooling and Dependency Updates:

• Updated uv-pre-commit from version 0.7.11 to 0.8.22 and ruff-pre-commit from v0.11.12 to v0.13.2 in .pre-commit-config.yaml to ensure the latest linting and dependency management features are used.

Documentation and Guidelines Restructuring:

• Renamed and moved coding style documentation from .cursor/rules/coding_style.mdc to AGENTS.md for better visibility and organization.
• Removed detailed development guidelines from CLAUDE.md and replaced its contents with a pointer to AGENTS.md to centralize rules and reduce duplication. [1] [2]

Linting Configuration:

• Removed deprecated Ruff lint rule UP038 from the ignore list in pyproject.toml to keep linting configuration up to date.

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