Sync Python version classifiers with requires-python >= 3.10

[Copilot]

The Python version classifiers in pyproject.toml were out of sync with requires-python = ">=3.10", listing 3.9 as supported and missing 3.11 and 3.14.

Changes

• Remove Programming Language :: Python :: 3.9 classifier (below minimum)
• Add Programming Language :: Python :: 3.11 classifier (missing from sequence)
• Add Programming Language :: Python :: 3.14 classifier (latest release)

Classifiers now correctly reflect supported versions: 3.10, 3.11, 3.12, 3.13, 3.14.

Original prompt

The Python version classifiers in pyproject.toml are out of sync with the requires-python = ">=3.10" requirement.

Current State

The classifiers currently include Python 3.9 (which is not supported) and are missing Python 3.11 and 3.14.

Required Changes

Update the classifiers in pyproject.toml to:

classifiers = [
    "License :: OSI Approved :: Python Software Foundation License",
    "Operating System :: OS Independent",
    "Programming Language :: Python",
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.10",
    "Programming Language :: Python :: 3.11",
    "Programming Language :: Python :: 3.12",
    "Programming Language :: Python :: 3.13",
    "Programming Language :: Python :: 3.14",
    "Programming Language :: Python :: Implementation :: PyPy",
]

Summary of Changes

• Remove "Programming Language :: Python :: 3.9" - not supported per requires-python = ">=3.10"
• Add "Programming Language :: Python :: 3.11" - was missing from the sequence
• Add "Programming Language :: Python :: 3.14" - latest Python version

This pull request was created from Copilot chat.

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