Align supported Python versions to 3.13/3.14 across packaging and CI

[Copilot]

This updates the project’s declared Python support to 3.13 and 3.14 so packaging constraints and CI expectations are consistent. It removes the previous 3.14-only constraint mismatch.

• Packaging metadata and tooling alignment

  • Set requires-python to >=3.13 in pyproject.toml
  • Updated Ruff target version to py313
  • Added Programming Language :: Python :: 3.13 classifier
  • Expanded tox environments from ["lint", "3.14"] to ["lint", "3.13", "3.14"]
  • Updated tox GitHub Actions mapping to include 3.13

• CI coverage update

  • Expanded test workflow matrix to run on both Python 3.13 and 3.14

• Dependency constraint adjustment

  • Lowered homeassistant dev pin in requirements_dev.txt from 2026.5.1 to 2026.2.3 to align with the updated Python support range

[project]
requires-python = ">=3.13"

[tool.tox]
env_list = ["lint", "3.13", "3.14"]

[Copilot]

Pull request overview

Aligns the project’s declared and tested Python support to Python 3.13/3.14 so packaging metadata, lint/tooling configuration, tox settings, and CI coverage are consistent.

Changes:

• Update packaging/tooling metadata to target Python 3.13+ (including requires-python, Ruff target, and classifiers).
• Expand tox and CI test matrices to run on both Python 3.13 and 3.14.
• Adjust Home Assistant dev tooling: lower the dev pin in requirements_dev.txt and refine the HA-dev workflow install/test classification behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
requirements_dev.txt	Lowers the pinned homeassistant dev dependency version to align with the supported Python range.
pyproject.toml	Updates requires-python to >=3.13, sets Ruff target to py313, adds a 3.13 classifier, and expands tox envs + GH Actions tox mapping.
.github/workflows/tests.yml	Expands the test workflow matrix to run on Python 3.13 and 3.14.
.github/workflows/home-assistant-dev.yml	Updates HA-dev dependency installation flow and adds pytest outcome classification + conditional workflow failure for integration incompatibility.

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