Adjust health routes

The health route for action and presenter do not conform to the new health route schema.

They currently return { "status": "running" }

• They should return { "healthy": true , "service":"backend/Action" } for action and { "healthy": true , "service":"backend/Presenter" } for presenter
• For production there should also be a Healthcheck added for manage return { "healthy": true , "service":"backend/Manage" }
• The type should be application/json for each health route

Locate the health route implementations for action, presenter, and manage. Compare their current responses with the new health route schema, including the application/json content type, and check the relevant route tests or run the backend test suite. Done means all three routes return the specified healthy and service fields, with manage covered for production.