LoRAServerSocket refactor and CI workflow improvements

[mdvillagra]

Summary:

This PR improves the CI, code readability in key components, and streamline local development and testing workflows.

More details:

• Simplified and clarified LoRAServerSocket initialization and related imports to improve readability and maintainability.
• Updated workflow names for better clarity.
• Refactored CI configuration for consistency, clearer structure, and more robust Python dependency management.
• Adjusted coverage threshold from 40% to 30% to better reflect the current state of the test suite while still enforcing a minimum bar.
• Project configuration & scripts:
  • Refactored helper scripts to improve formatting and consistency across the codebase.
  • Updated project configuration to align with the new CI and dependency setup.
• Housekeeping:
  • Extended .gitignore to include .pytest_cache, keeping the repo cleaner and preventing unnecessary files from being tracked.

---

Note

Add GitHub Actions CI for lint/tests with 30% coverage, introduce dev extras, and refactor LoRA MPI sockets/client and scripts with timeouts and cleaner structure.

• CI:
  • Add GitHub Actions workflow ci.yml with Python 3.11 linting (ruff) and tests + coverage (--cov-fail-under=30).
• Project config:
  • Add dev optional dependencies (ruff, pytest, pytest-cov) in src/pyproject.toml.
  • Point readme to ../readme.md.
• LoRA MPI server/client:
  • LoRAServerSocket: support configurable stop_timeout and apply to server socket timeout; cleanup imports and responses.
  • BaseModelClient/comm: patching flow retained; networking timeout handling and formatting improvements.
  • Use generate_proofs directly; streamline ONNX/JSON export (export_lora_onnx_json_mpi).
• Scripts:
  • Reformat and standardize CLI args in base_model_user_sample_script.py, lora_contributor_sample_script.py (use stop_timeout=1.0), and verify_proofs.py.
• Utilities:
  • Refine polynomial commitment implementation (polynomial_commit.py) with hiding Merkle commitments and verification API.
• Ignore:
  • Ensure .coverage is ignored in .gitignore.

^{Written by Cursor Bugbot for commit ddceddb. This will update automatically on new commits. Configure here.}