Docs on transfer operations

side-node/src/bitcoin/driver/simple_transfer.rs

@@ -2,6 +2,8 @@ use crate::bitcoin::client::BitcoinClient;
 use crate::bitcoin::driver;
 use bdk::wallet::AddressIndex;
 
+/// Run the simplest transfer flow. There is no policy file,
+/// it's just a normal bitcoin transaction for a sanity check.
 pub async fn run() -> Result<(), anyhow::Error> {
     let (mut dave, sammy) = driver::setup().await?;
 

side-node/src/bitcoin/driver/transfer_policy.rs

@@ -4,6 +4,9 @@ use bdk::miniscript::policy;
 
 use crate::bitcoin;
 
+/// A miniscript-based simple transfer, equivalent to the `simple_transfer`
+/// but using a Bitcoin miniscript policy. TODO: finish implementation, it's not
+/// working yet.
 pub(crate) async fn run() -> anyhow::Result<()> {
     let (dave, _sammy) = bitcoin::driver::setup().await?;