Add GitHub Actions CI pipeline for automated testing

[Copilot]

Adds automated test execution on commits and PRs to main branch.

Changes

• CI Workflow (.github/workflows/test.yml)

  • Runs on push to main and PRs targeting main
  • Sets up Python 3.11, Node.js 20, GCC/G++ toolchain
  • Installs dependencies and executes python test_all.py
  • Uploads test artifacts (generated code, binary files) with 5-day retention
  • Uses minimal permissions (contents: read)

• Documentation (README.md)

  • Added Continuous Integration section with pipeline overview

Test Coverage

The pipeline validates:

• Code generation for C, C++, TypeScript, Python
• Compilation and execution for all target languages
• Serialization/deserialization across primitive types, arrays, nested messages
• Cross-language binary compatibility
• Framed packet parsing

Test results and artifacts are accessible via the Actions tab after each run.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add testing pipeline</issue_title>
<issue_description>Create pipeline to run all tests on commits or PRs into main.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add testing pipeline #13

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[Copilot]

Pull Request Overview

This PR adds GitHub Actions continuous integration to automatically run the test suite on every push and pull request to the main branch. The changes also document the CI setup in the README.

• Adds a GitHub Actions workflow that runs the complete test suite with Python 3.11 and Node.js 20
• Documents the CI pipeline, including what it does and how to access test results
• Configures artifact uploads for generated code and binary files with 5-day retention

Reviewed Changes

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

File	Description
.github/workflows/test.yml	New GitHub Actions workflow that installs dependencies and runs the full test suite
README.md	Adds "Continuous Integration" section documenting the CI pipeline and artifact retention

[Copilot]

The documentation states the CI runs python test_all.py, but according to the repository structure and coding guidelines, the correct command should be python3 test_all.py for consistency with other Python commands used throughout the project (e.g., line 20: PYTHONPATH=src python3 src/main.py).

[Copilot]

The workflow uses python instead of python3. While this may work on ubuntu-latest where python is aliased to Python 3, it's inconsistent with the repository's documented commands and could cause issues if the alias is not present. Should use python3 test_all.py or explicitly use python3 -m pattern for consistency.

Suggested change

	python -m pip install --upgrade pip
	pip install proto-schema-parser structured-classes
	- name: Install Node.js dependencies
	run: npm ci
	- name: Run test suite
	run: python test_all.py
	python3 -m pip install --upgrade pip
	pip3 install proto-schema-parser structured-classes
	- name: Install Node.js dependencies
	run: npm ci
	- name: Run test suite
	run: python3 test_all.py