Add repository hygiene, CI workflow, test scaffolding, pre-commit hooks, and comprehensive contributor documentation

[Copilot]

This PR implements comprehensive repository hygiene improvements to establish a solid foundation for collaboration and maintainability.

Overview

This change adds essential development infrastructure including automated testing, code quality checks, and detailed contributor documentation. These improvements will help maintain code quality, prevent common issues, and make it easier for new contributors to get started.

Changes Made

1. GitHub Actions CI Workflow (.github/workflows/ci.yml)

Implements automated testing across Python 3.10, 3.11, and 3.12 on every push and pull request:

• Installs dependencies from requirements.txt
• Runs ruff linting to catch code quality issues
• Executes pytest to ensure tests pass

2. Pre-commit Hooks (.pre-commit-config.yaml)

Configures pre-commit hooks using the latest stable versions to automatically format and lint code before commits:

• Black (24.10.0): Consistent code formatting
• Ruff (v0.7.4): Fast linting with auto-fix capabilities

3. Test Scaffolding (tests/)

Establishes test infrastructure with:

• tests/test_sample.py: Minimal passing test to ensure CI works
• tests/README.md: Comprehensive guide on running tests locally and understanding CI commands

4. Environment Variable Template (.env.template)

Documents required environment variables without exposing secrets:

• OPENAI_API_KEY: For AI/LLM integration
• STREAMLIT_PORT: Configurable port (default: 8501)
• OTHER_REQUIRED_VAR: Placeholder for additional configuration
• Includes clear instructions to copy to .env and never commit secrets

5. Enhanced .gitignore

Prevents common artifacts and sensitive files from being committed:

• Environment files (.env.local, .env.development, etc.)
• IDE configurations (.idea/, .vscode/)
• Python caches (.pytest_cache/, .mypy_cache/, __pycache__/)
• Build artifacts (dist/, build/, *.egg-info/)
• Coverage reports (.coverage*)
• Editor swap files (*.swp, *.swo)

6. Comprehensive Contributor Guide (.github/copilot-instructions.md)

Created extensive documentation covering all aspects of contributing:

• Project overview and tech stack (Streamlit, Pandas, OpenAI, OR-Tools)
• Step-by-step setup instructions
• Testing guidelines (local and CI)
• Pre-commit hooks setup
• Security best practices for API keys and secrets
• Code style and linting tools (Black, Ruff, isort)
• Dependency management recommendations
• Contributing workflow
• License guidance
• Onboarding checklist for new contributors

7. Bug Fix (app.py)

Removed duplicate import streamlit as st statement that was causing a linting error.

Benefits

• Automated Quality Checks: CI ensures code quality across multiple Python versions before merge
• Consistent Code Style: Pre-commit hooks enforce formatting standards automatically
• Better Onboarding: Clear documentation helps new contributors get started quickly
• Security: .env.template prevents accidental secret commits while documenting requirements
• Maintainability: Test scaffolding provides foundation for future test development

Testing

All CI checks pass locally:

• ✅ Dependencies install successfully
• ✅ ruff check . passes with no errors
• ✅ pytest -q runs and passes

The GitHub Actions workflow will automatically run these checks on this PR.

Note on OR-Tools

The contributor guide includes a note that OR-Tools may have platform-specific wheels. Contributors should consult the OR-Tools documentation if they encounter installation issues.

Original prompt

Create a pull request that implements repository hygiene, CI, test scaffolding, pre-commit hooks, and improved contributor documentation. Make the following changes in the repository AreteDriver/TLS-Concept-production-2.0:

1. Update .gitignore (append the following lines):

• .env
• .env.*
• .idea/
• .vscode/
• .pytest_cache/
• .mypy_cache/
• pip-wheel-metadata/
• dist/
• build/
• *.egg-info/
• .coverage
• .coverage.*

2. Add GitHub Actions CI workflow at .github/workflows/ci.yml with the following behavior:

• name: CI
• trigger: push and pull_request
• matrix: python-version: [3.10, 3.11, 3.12]
• steps: checkout, setup-python, install pip, pip install -r requirements.txt, install ruff and run ruff check ., install pytest and run pytest -q

3. Add pre-commit configuration at .pre-commit-config.yaml to run black and ruff, using stable tags (use the latest stable refs where appropriate).

4. Add .env.template at the repository root with the following keys (no secrets):

• OPENAI_API_KEY=
• STREAMLIT_PORT=8501
• OTHER_REQUIRED_VAR=

5. Add simple test scaffolding: create tests/test_sample.py with a minimal pytest test that asserts True (so CI passes until real tests are added).

6. Improve .github/copilot-instructions.md: update the file to a cleaned and expanded contributor guide that:

• Keeps the original content and reorganizes it under clear headings (Project overview, Tech stack, Setup, Running the app, Testing, CI, Pre-commit, Security & Secrets, Contributing, License and Onboarding checklist).
• Adds sections describing: where to store API keys (use .env and GitHub Secrets), how to run tests and linters locally, recommended linting/formatting tools (black, ruff, isort), suggestion to pin dependencies and to add a requirements.txt if not present, and a pointer to add a LICENSE file.
• Adds a short CI example and note that OR-Tools may have platform-specific wheels.

7. Add a small tests/README.md explaining how to run the tests locally and how to run the CI commands.

Notes:

• Do not add any secrets or API keys to the repo.
• Ensure new files are created with reasonable content; keep code style and formatting consistent with typical Python repos.
• If requirements.txt does not exist or is empty, add a minimal placeholder with core dependencies (streamlit, pandas) pinned loosely (e.g., streamlit>=1.0). If requirements.txt already exists, do not modify it except to ensure it is present.

Please open a PR with these changes and a descriptive PR body summarizing each change and why it was added. Use a clear branch name (e.g., chore/ci-precommit-docs). Do not assign reviewers or merge the PR.

This pull request was created as a result of the following prompt from Copilot chat.

Create a pull request that implements repository hygiene, CI, test scaffolding, pre-commit hooks, and improved contributor documentation. Make the following changes in the repository AreteDriver/TLS-Concept-production-2.0:

1. Update .gitignore (append the following lines):

• .env
• .env.*
• .idea/
• .vscode/
• .pytest_cache/
• .mypy_cache/
• pip-wheel-metadata/
• dist/
• build/
• *.egg-info/
• .coverage
• .coverage.*

2. Add GitHub Actions CI workflow at .github/workflows/ci.yml with the following behavior:

• name: CI
• trigger: push and pull_request
• matrix: python-version: [3.10, 3.11, 3.12]
• steps: checkout, setup-python, install pip, pip install -r requirements.txt, install ruff and run ruff check ., install pytest and run pytest -q

3. Add pre-commit configuration at .pre-commit-config.yaml to run black and ruff, using stable tags (use the latest stable refs where appropriate).

4. Add .env.template at the repository root with the following keys (no secrets):

• OPENAI_API_KEY=
• STREAMLIT_PORT=8501
• OTHER_REQUIRED_VAR=

5. Add simple test scaffolding: create tests/test_sample.py with a minimal pytest test that asserts True (so CI passes until real tests are added).

6. Improve .github/copilot-instructions.md: update the file to a cleaned and expanded contributor guide that:

• Keeps the original content and reorganizes it under clear headings (Project overview, Tech stack, Setup, Running the app, Testing, CI, Pre-commit, Security & Secrets, Contributing, License and Onboarding checklist).
• Adds sections describing: where to store API keys (use .env and GitHub Secrets), how to run tests and linters locally, recommended linting/formatting tools (black, ruff, isort), suggestion to pin dependencies and to add a requirements.txt if not present, and a pointer to add a LICENSE file.
• Adds a short CI example and note that OR-Tools may have platform-specific wheels.

7. Add a small tests/README.md explaining how to run the tests locally and how to run the CI commands.

Notes:

• Do not add any secrets or API keys to the repo.
• Ensure new files are created with reasonable content; keep code style and formatting consistent with typical Python repos.
• If requirements.txt does not exist or is empty, add a minimal placeholder with core dependencies (streamlit, pandas) pinned loosely (e.g., streamlit>=1.0). If requirements.txt already exists, do not modify it except to ensure it is present.

Please open a PR with these changes and a descriptive PR body summarizing each change and why it was added. Use a clear branch name (e.g., chore/ci-precommit-docs). Do not assign reviewers or merge the PR.

---

💬 Share your feedback on Copilot coding agent for the chance to win a $200 gift card! Click here to start the survey.

[Copilot]

Pull Request Overview

This PR establishes comprehensive repository infrastructure to improve code quality, maintainability, and contributor onboarding. It implements automated CI testing across Python 3.10-3.12, pre-commit hooks for consistent formatting, test scaffolding, environment variable templates, and extensive contributor documentation.

Key Changes:

• Added GitHub Actions CI workflow with matrix testing, linting, and pytest execution
• Configured pre-commit hooks for Black and Ruff with auto-formatting capabilities
• Created test scaffolding with sample tests and comprehensive testing documentation
• Fixed duplicate import statement in app.py

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.github/workflows/ci.yml	GitHub Actions CI workflow for automated testing across Python versions
.pre-commit-config.yaml	Pre-commit hook configuration for Black and Ruff
.env.template	Environment variable template documenting required configuration
.github/copilot-instructions.md	Comprehensive contributor guide with setup, testing, and security documentation
tests/test_sample.py	Sample test ensuring CI pipeline works
tests/README.md	Testing documentation with local execution and CI command examples
app.py	Removed duplicate streamlit import statement

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}