fix: add LocalizedError for readable error messages

Bitkit/Utilities/Errors.swift

@@ -1,7 +1,7 @@
 import Foundation
 import LDKNode
 
-enum CustomServiceError: Error {
+enum CustomServiceError: LocalizedError {
     case nodeNotSetup
     case nodeNotStarted
     case onchainWalletNotInitialized
@@ -12,14 +12,54 @@ enum CustomServiceError: Error {
     case regtestOnlyMethod
     case channelSizeExceedsMaximum
     case currencyRateUnavailable
+
+    var errorDescription: String? {
+        switch self {
+        case .nodeNotSetup:
+            return "Node is not setup"
+        case .nodeNotStarted:
+            return "Node is not started"
+        case .onchainWalletNotInitialized:
+            return "Onchain wallet not created"
+        case .mnemonicNotFound:
+            return "Mnemonic not found"
+        case .nodeStillRunning:
+            return "Node is still running"
+        case .onchainWalletStillRunning:
+            return "Onchain wallet is still running"
+        case .invalidNodeSigningMessage:
+            return "Invalid node signing message"
+        case .regtestOnlyMethod:
+            return "Method only available in regtest environment"
+        case .channelSizeExceedsMaximum:
+            return "Channel size exceeds maximum allowed size"
+        case .currencyRateUnavailable:
+            return "Currency rate unavailable"
+        }
+    }
 }
 
-enum KeychainError: Error {
+enum KeychainError: LocalizedError {
     case failedToSave
     case failedToSaveAlreadyExists
     case failedToDelete
     case failedToLoad
     case keychainWipeNotAllowed
+
+    var errorDescription: String? {
+        switch self {
+        case .failedToSave:
+            return "Failed to save to keychain"
+        case .failedToSaveAlreadyExists:
+            return "Failed to save to keychain: item already exists"
+        case .failedToDelete:
+            return "Failed to delete from keychain"
+        case .failedToLoad:
+            return "Failed to load from keychain"
+        case .keychainWipeNotAllowed:
+            return "Keychain wipe not allowed"
+        }
+    }
 }
 
 enum BlocktankError_deprecated: Error {

Bitkit/ViewModels/AppViewModel.swift

@@ -216,6 +216,9 @@ extension AppViewModel {
     }
 
     func toast(_ error: Error) {
+        if error is CancellationError {
+            return
+        }
         toast(type: .error, title: "Error", description: error.localizedDescription)
     }