This pull request improves the local development setup instructions for PostgreSQL on macOS, especially for users installing via Homebrew. It clarifies how to ensure the PostgreSQL server is running and addresses potential issues with the default user role. This pull request solves issue #14637 I personally faced this issues today while trying to setup the project on my M1 Macbook Air. PostgreSQL setup enhancements: * Added instructions to start the PostgreSQL service using Homebrew and verify its status with `brew services list`. * Provided guidance on checking for the existence of the `postgres` role and steps to manually create it if missing, to avoid permission issues during development. --------- Co-authored-by: Charles Bochet <charles@twenty.com>