ax(mining): replace description comments with usage examples on InitRouter and SetupRoutes

AX Principle 2: comments show HOW with real values, not WHAT the signature already says.

Co-Authored-By: Charon <charon@lethean.io>

pkg/mining/service.go

@@ -489,9 +489,8 @@ func NewService(manager ManagerInterface, listenAddr string, displayAddr string,
 	}, nil
 }
 
-// InitRouter initializes the Gin router and sets up all routes without starting an HTTP server.
-// Use this when embedding the mining service in another application (e.g., Wails).
-// After calling InitRouter, you can use the Router field directly as an http.Handler.
+// svc.InitRouter()
+// http.Handle("/", svc.Router) // embed as handler in Wails or another HTTP server
 func (s *Service) InitRouter() {
 	s.Router = gin.Default()
 
@@ -622,9 +621,8 @@ func (s *Service) ServiceStartup(ctx context.Context) error {
 	return fmt.Errorf("server failed to start listening on %s within timeout", s.Server.Addr)
 }
 
-// SetupRoutes configures all API routes on the Gin router.
-// This is called automatically by ServiceStartup, but can also be called
-// manually after InitRouter for embedding in other applications.
+// svc.InitRouter()
+// svc.SetupRoutes() // re-call after adding middleware manually
 func (s *Service) SetupRoutes() {
 	apiGroup := s.Router.Group(s.APIBasePath)