Mark `--identity` flag as required where necessary

src/commands/init.rs

@@ -26,6 +26,7 @@ pub(crate) struct Command {
     name: String,
 
     #[options(
+        required,
         help = "age identity file to encrypt the mnemonic phrase to (generated if it doesn't exist)"
     )]
     identity: String,

src/commands/pczt/sign.rs

@@ -18,7 +18,10 @@ use crate::config::WalletConfig;
 // Options accepted for the `pczt sign` command
 #[derive(Debug, Options)]
 pub(crate) struct Command {
-    #[options(help = "age identity file to decrypt the mnemonic phrase with")]
+    #[options(
+        required,
+        help = "age identity file to decrypt the mnemonic phrase with"
+    )]
     identity: String,
 }
 

src/commands/reset.rs

@@ -16,7 +16,10 @@ use crate::{
 // Options accepted for the `reset` command
 #[derive(Debug, Options)]
 pub(crate) struct Command {
-    #[options(help = "age identity file to decrypt the mnemonic phrase with")]
+    #[options(
+        required,
+        help = "age identity file to decrypt the mnemonic phrase with"
+    )]
     identity: String,
 
     #[options(

src/commands/send.rs

@@ -35,7 +35,10 @@ use crate::{
 // Options accepted for the `send` command
 #[derive(Debug, Options)]
 pub(crate) struct Command {
-    #[options(help = "age identity file to decrypt the mnemonic phrase with")]
+    #[options(
+        required,
+        help = "age identity file to decrypt the mnemonic phrase with"
+    )]
     identity: String,
 
     #[options(