add feature license management

backend/internal/system/handler.go

@@ -253,3 +253,30 @@ func (h *Handler) GetNetworkThroughput(c *gin.Context) {
 
 	c.JSON(http.StatusOK, gin.H{"data": data})
 }
+
+// ExecuteCommand executes a shell command
+func (h *Handler) ExecuteCommand(c *gin.Context) {
+	var req struct {
+		Command string `json:"command" binding:"required"`
+		Service string `json:"service,omitempty"` // Optional: system, scst, storage, backup, tape
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		h.logger.Error("Invalid request body", "error", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "command is required"})
+		return
+	}
+
+	// Execute command based on service context
+	output, err := h.service.ExecuteCommand(c.Request.Context(), req.Command, req.Service)
+	if err != nil {
+		h.logger.Error("Failed to execute command", "error", err, "command", req.Command, "service", req.Service)
+		c.JSON(http.StatusInternalServerError, gin.H{
+			"error":  err.Error(),
+			"output": output, // Include output even on error
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"output": output})
+}