Add Python 3.14 support

[Copilot]

Adds Python 3.14 to supported versions and updates CI matrix.

Changes

• pyproject.toml: Added Python 3.14 classifier
• pyproject.toml: Unified torch dependency spec from python_version == '3.13' to python_version >= '3.13' (covers 3.13, 3.14, and future versions)
• .github/workflows/ci.yml: Added '3.14' to test matrix
• uv.lock: Updated lock file to reflect new torch dependency markers
• .pre-commit-config.yaml: Updated ruff to v0.14.14

The torch dependency change simplifies maintenance—future Python versions will automatically use torch>=2.6 without additional config updates.

Original prompt

add support for python 3.14 update ci as well.

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[eh-main-bot]

@copilot run 'make update' update lock file.

[Copilot]

@copilot run 'make update' update lock file.

Done! Updated the lock file and pre-commit hooks. Changes in commit 77dad55:

• uv.lock now reflects the updated torch dependency markers (python_full_version >= '3.13')
• ruff updated to v0.14.14