Junie: cleanups. Code fixups.

cmd/mcias-client/database.go

@@ -33,7 +33,7 @@ var getCredentialsCmd = &cobra.Command{
 This command requires authentication with a username and token.
 If database-id is provided, it returns credentials for that specific database.
 If database-id is not provided, it returns the first database the user has access to.`,
-	Run: func(cmd *cobra.Command, args []string) {
+	Run: func(_ *cobra.Command, args []string) {
 		getCredentials()
 	},
 }
@@ -43,7 +43,7 @@ var listCredentialsCmd = &cobra.Command{
 	Short: "List all accessible database credentials",
 	Long: `List all database credentials the user has access to.
 This command requires authentication with a username and token.`,
-	Run: func(cmd *cobra.Command, args []string) {
+	Run: func(_ *cobra.Command, args []string) {
 		listCredentials()
 	},
 }