Add required argument validation to config_get and config_history handlers

mcp/config/config_get.go

@@ -3,6 +3,7 @@ package config
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"os"
 	"path/filepath"
 
@@ -24,6 +25,10 @@ func handleNginxConfigGet(ctx context.Context, request mcpgo.CallToolRequest) (*
 	args := request.GetArguments()
 	relativePath := mcp.GetString(args, "relative_path")
 
+	if relativePath == "" {
+		return nil, fmt.Errorf("argument 'relative_path' is required")
+	}
+
 	absPath, err := config.ResolveAbsoluteOrRelativeConfPath(relativePath)
 	if err != nil {
 		return nil, err

mcp/config/config_history.go

@@ -3,6 +3,7 @@ package config
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 
 	"github.com/0xJacky/Nginx-UI/internal/mcp"
 	"github.com/0xJacky/Nginx-UI/query"
@@ -21,6 +22,10 @@ func handleNginxConfigHistory(ctx context.Context, request mcpgo.CallToolRequest
 	args := request.GetArguments()
 	filepath := mcp.GetString(args, "filepath")
 
+	if filepath == "" {
+		return nil, fmt.Errorf("argument 'filepath' is required")
+	}
+
 	q := query.ConfigBackup
 	var histories, err = q.Where(q.FilePath.Eq(filepath)).Order(q.ID.Desc()).Find()
 	if err != nil {