One Resource per Item with for_each

This machine has OpenTofu, the open-source tool that reads the same configuration language as Terraform. Run it as tofu (terraform runs the same program). There is no network: the local, random and null providers are already installed.

In /home/student/infra/pulse, three copy-pasted local_file resources each write a service config to /home/student/out/services/NAME.conf containing port=PORT. A fourth service is coming, and the copies already disagree.

Task

• Replace the three resources with one local_file resource that uses for_each over a variable services, a map of service name to port.
• The map's default holds api = 8080, worker = 9090, web = 3000 and the new metrics = 9100.
• Each instance is addressed by the service name, for example local_file.service["api"].
• Apply it: the four files exist, each with exactly port=PORT and a newline.