The correct option is Use Copilot Chat inside GitHub Codespaces so it can see the entire repository. This places the assistant in an environment that has the full workspace available so it can reason across the entire monorepo rather than only the files that happen to be open locally.

Running Copilot Chat in Codespaces gives it consistent access to all modules and project tooling which improves its ability to follow cross module flows and provide specific guidance. In a large monorepo this increased visibility helps the assistant link related files and identify where concurrency issues might originate.

Upgrade to Copilot Enterprise is incorrect because changing the plan does not increase what the assistant can see from a local editor and the problem described is limited repository visibility rather than missing features.

GitHub Code Search is incorrect because it is a developer search tool and it does not expand the context window of the chat assistant in the editor. It helps humans find code but it does not make the assistant project aware.

Fine tune a custom model for the team is incorrect because Copilot is not offered as a user fine tuned model and fine tuning would not address the immediate need for full repository context.

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