Add rover integrity

Rovers are damaged by bumping into solid objects

cmd/rove-reverse-proxy/http_test.go

@@ -123,4 +123,5 @@ func TestServer_Rover(t *testing.T) {
 	assert.NotZero(t, resp.Range, "Rover should return valid range")
 	assert.NotZero(t, len(resp.Name), "Rover should return valid name")
 	assert.NotZero(t, resp.Position, "Rover should return valid position")
+	assert.NotZero(t, resp.Integrity, "Rover should have positive integrity")
 }

cmd/rove-server/internal/routes.go

@@ -66,6 +66,7 @@ func (s *Server) Rover(ctx context.Context, req *rove.RoverRequest) (*rove.Rover
 			},
 			Range:     int32(rover.Range),
 			Inventory: rover.Inventory,
+			Integrity: int32(rover.Integrity),
 		}
 	}
 	return response, nil