Add --rune flag to resume command to enable resuming a specific etching

src/subcommand/wallet/resume.rs

@@ -8,6 +8,8 @@ pub struct ResumeOutput {
 pub(crate) struct Resume {
   #[arg(long, help = "Don't broadcast transactions.")]
   pub(crate) dry_run: bool,
+  #[arg(long, value_name = "PENDING•RUNE", help = "Rune to resume (spaced).")]
+  pub(crate) rune: Option<SpacedRune>,
 }
 
 impl Resume {
@@ -18,7 +20,26 @@ impl Resume {
         break;
       }
 
-      for (rune, entry) in wallet.pending_etchings()? {
+      let mut pending_etchings = Vec::new();
+      let spaced_rune = self.rune.clone();
+
+      if let Some(spaced_rune) = spaced_rune {
+        let pending_etching = wallet
+          .pending_etchings()?
+          .into_iter()
+          .find(|(rune, _)| *rune == spaced_rune.rune);
+
+        ensure!(
+          pending_etching.is_some(),
+          "rune `{spaced_rune}` does not correspond to any pending etching."
+        );
+
+        pending_etchings.push(pending_etching.unwrap());
+      } else {
+        pending_etchings.extend(wallet.pending_etchings()?);
+      }
+
+      for (rune, entry) in pending_etchings {
         if self.dry_run {
           etchings.push(batch::Output {
             reveal_broadcast: false,