Replace poetry, black, and flake8 by uv and ruff

[BerndDoser]

uv and ruff are extremely fast project management, Python linting, and code formatting tools written in Rust.
The pyproject.toml was updated to work with both poetry and uv. In the GitHub action workflow, poetry, black, and flake8 were replaced by uv and ruff.

[Copilot]

Pull Request Overview

This PR replaces Poetry, Black, and Flake8 with uv and ruff by updating project dependencies, CI steps, and removing old config files.

• Move from Poetry to uv for dependency management and test execution.
• Replace Black and Flake8 linting/formatting with ruff in CI.
• Remove obsolete .flake8 config and adjust project metadata.

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/test_gaia_converter.py	Removed extraneous blank lines in test definitions
tests/test_fits_converter.py	Removed extraneous blank lines in test definitions
src/pest/spherinator_data_preprocessing.py	Reformatted assert statements and removed trailing spaces
pyproject.toml	Added uv, moved/lifted pytest, added ruff dependency
.github/workflows/python-package.yml	Switched from Poetry steps to uv and ruff in CI
.flake8	Removed old Flake8 configuration
devel/test_chunks.ipynb	Quote style change in notebook
devel/show_parquet.ipynb	Removed unused import cell from notebook

Comments suppressed due to low confidence (2)

devel/show_parquet.ipynb:150

• [nitpick] The removal of the import cell in this notebook is unrelated to the main changes and adds noise; consider reverting or excluding notebook diffs in this scope.

"df = dataset.to_table().to_pandas()\n"

devel/test_chunks.ipynb:709

• [nitpick] This notebook change only adjusts quoting style and does not affect functionality; consider excluding generated notebooks from this PR to reduce noise.

"pq.read_table(\"part-0.parquet\").to_pandas()"

[Copilot]

Pull Request Overview

This PR updates the project’s tooling by replacing poetry, black, and flake8 with the faster uv and ruff tools while adjusting configuration files and workflows accordingly.

• Removed extraneous blank lines and reformatted print statements and other expressions for conciseness.
• Updated the pyproject.toml and workflow configurations to support uv and ruff integration.

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/test_gaia_converter.py	Removed redundant blank lines in test functions.
tests/test_fits_converter.py	Consolidated argument passing in test functions.
src/pest/spherinator_data_preprocessing.py	Reformatted print statements and assertions for consistency.
src/pest/preprocessing.py	Reduced multi-line expression to a single line.
src/pest/gaia_converter.py	Minor formatting cleanup in lambda usage.
src/pest/fits_converter.py	Reformatted metadata replacements to single lines.
pyproject.toml	Updated dependencies and added ruff configuration sections.
devel/test_chunks.ipynb	Adjusted source string quotes.
devel/show_parquet.ipynb	Removed unused import lines.
.github/workflows/python-package.yml	Modified steps to use uv and updated checkout action version.
.flake8	Removed as linting is now handled by ruff.