New team members repeatedly ask how several repositories implement a payment workflow. The team wants a shared collection of code, issues, and explanatory notes to ground Copilot answers. Which feature is the best fit?

1. A Copilot Space containing the relevant sources and context.
2. A pull request summary copied into each developer's shell history.
3. A single generated completion committed as the onboarding document.
4. A repository content-exclusion rule covering the payment code.