Add more comments about the queue size etc.

iroh-bytes/src/store/bao_file.rs

@@ -468,6 +468,8 @@ pub struct BaoFileHandle {
     pub(crate) storage: Arc<RwLock<BaoFileStorage>>,
     config: Arc<BaoFileConfig>,
     hash: Hash,
+    /// An unqiue id for the handle, used for ensuring that a handle is dropped
+    /// and recreated in tests.
     #[cfg(test)]
     pub(crate) id: u64,
 }

iroh-bytes/src/store/file.rs

@@ -1369,6 +1369,8 @@ impl Actor {
         let tables = Tables::new(&txn)?;
         drop(tables);
         txn.commit()?;
+        // make the channel relatively large. there are some messages that don't
+        // require a response, it's fine if they pile up a bit.
         let (tx, rx) = flume::bounded(1024);
         let tx2 = tx.clone();
         let tx3 = tx.clone();