[4] feat: add reproducibility tests for LON visualizations

[WojtAcht]

Summary

• Add GitHub Actions CI workflow with two jobs: pre-commit linting and pytest, running on Python 3.12 with uv
• Add initial test suite for LON visualization covering layout and plot reproducibility
• Configure pytest test paths in pyproject.toml

[Copilot]

Pull request overview

Adds CI and pytest-based reproducibility coverage to ensure Local Optima Network (LON) visualizations produce deterministic layouts/outputs when a fixed seed is provided.

Changes:

• Add session-scoped LON fixtures (Sphere, Rastrigin) for reuse across tests.
• Add reproducibility tests for LONVisualizer.get_layout() and LONVisualizer.plot_2d() using a shared seed.
• Introduce a GitHub Actions CI workflow that runs pre-commit and pytest via uv.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 1 comment.

File	Description
tests/test_visualization.py	Adds layout + plot reproducibility tests for seeded visualization.
tests/conftest.py	Adds shared seed/config plus session fixtures to build LONs for tests.
.github/workflows/ci.yml	Adds CI jobs for pre-commit and pytest using uv.

Comments suppressed due to low confidence (1)

.github/workflows/ci.yml:6

• This workflow only runs on pull_request events. That means after merging (a push to main), the test/pre-commit jobs won’t run on the main branch, which reduces the reliability of post-merge validation. Consider adding a push trigger for main (and optionally workflow_dispatch) so CI also runs for the actual commits landing on the default branch.

on:
  pull_request:
    branches: [main]

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[pFornagiel]

Apart from two nitpicks mentioned above it looks good - feel free to implement those as you wish. 🚀