PingController

Unauthenticated liveness probe. Answers if the process can serve a request and checks nothing else, so it still reports ok while the database is down.

Disabled by default.

Deliberately does not extend BaseController, whose constructor connects to the database unconditionally - that would make this fail exactly when a liveness probe is most useful. Use /api/health for dependency status.

There is no constructor: the router passes request data (SymfonyRouter::process()) and PHP discards it, which suits an endpoint that reads nothing from the request.