feat: runtime manager

game/internal/router/handler/healthz.go

@@ -0,0 +1,14 @@
+package handler
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// HealthzHandler is the technical liveness probe used by Runtime Manager
+// and operator tooling. It returns 200 with {"status":"ok"} regardless
+// of whether the engine has been initialised through POST /api/v1/init.
+func HealthzHandler(c *gin.Context) {
+	c.JSON(http.StatusOK, gin.H{"status": "ok"})
+}