refactor: changed poetry to uv

[pepe5p]

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[Copilot]

Pull Request Overview

This PR migrates the project’s packaging from Poetry to a PEP 621/Hatchling + UV-based setup, updates the CI pipeline accordingly, and cleans up an unused import.

• Swapped tool.poetry metadata for a PEP 621 [project] table and switched build backend to Hatchling.
• Introduced UV tool commands in the GitHub Actions workflow for dependency sync and test execution.
• Removed the Union import from test helpers.

Reviewed Changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated no comments.

File	Description
tests/helpers.py	Removed unused Union import from typing.
pyproject.toml	Replaced Poetry sections with PEP 621 [project], added Hatchling, and configured tool.uv.
.github/workflows/test.yml	Replaced poetry install/poetry run with uv sync and uv run pytest.

Comments suppressed due to low confidence (3)

pyproject.toml:11

• PEP 621 specifies optional dependencies under project.optional-dependencies rather than a top-level [dependency-groups]. Moving your dev dependencies into [project.optional-dependencies] ensures Hatchling and other PEP 621 tools recognize and install them correctly.

[dependency-groups]

pyproject.toml:5

• PEP 621 metadata usually expects authors as a list of strings (e.g., ["Piotr Karaś <pepe500p@gmail.com>"]). Consider switching to the string form for better compatibility with PyPI and build tools.

authors = [{ name = "Piotr Karaś", email = "pepe500p@gmail.com" }]

.github/workflows/test.yml:28

• [nitpick] Ensure uv sync installs your development dependencies as intended. If it defaults to only production dependencies, you may need to pass a flag like uv sync --dev or similar to include the dev group.

          uv sync