From 8ab8bbd8b30e7b5d4225665a7ab4f5547f53819a Mon Sep 17 00:00:00 2001
From: Davide Grilli <davide.grilli@outlook.com>
Date: Thu, 11 Jun 2026 18:41:47 +0200
Subject: [PATCH] feat(storage): XDG-compliant paths and default language
 English
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AppPaths: use Environment.SpecialFolder.ApplicationData for all platforms
  - Windows  → %APPDATA%\PalladiumWallet  (unchanged)
  - Linux    → ~/.config/PalladiumWallet  (XDG standard, was ~/.palladium-wallet)
  - macOS    → ~/Library/Application Support/PalladiumWallet

AppConfig: change default language from "it" to "en" for new installs.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/Core/Storage/AppConfig.cs | 4 ++--
 src/Core/Storage/AppPaths.cs  | 9 ++++++---
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/Core/Storage/AppConfig.cs b/src/Core/Storage/AppConfig.cs
index 1c10025..aaddc0f 100644
--- a/src/Core/Storage/AppConfig.cs
+++ b/src/Core/Storage/AppConfig.cs
@@ -9,8 +9,8 @@ namespace PalladiumWallet.Core.Storage;
 /// </summary>
 public sealed class AppConfig
 {
-    /// <summary>Codice lingua UI ("it", "en").</summary>
-    public string Language { get; set; } = "it";
+    /// <summary>Codice lingua UI.</summary>
+    public string Language { get; set; } = "en";
 
     /// <summary>Unità di visualizzazione degli importi (vedi <see cref="Wallet.CoinAmount.Units"/>).</summary>
     public string Unit { get; set; } = "PLM";
diff --git a/src/Core/Storage/AppPaths.cs b/src/Core/Storage/AppPaths.cs
index 1087f78..39f7d93 100644
--- a/src/Core/Storage/AppPaths.cs
+++ b/src/Core/Storage/AppPaths.cs
@@ -18,9 +18,12 @@ public static class AppPaths
         if (Directory.Exists(portable))
             return portable;
 
-        return OperatingSystem.IsWindows()
-            ? Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "PalladiumWallet")
-            : Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".palladium-wallet");
+        // Windows → %APPDATA%\PalladiumWallet
+        // Linux   → $XDG_CONFIG_HOME/PalladiumWallet  (default ~/.config/PalladiumWallet)
+        // macOS   → ~/Library/Application Support/PalladiumWallet
+        return Path.Combine(
+            Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
+            "PalladiumWallet");
     }
 
     /// <summary>Cartella dati della rete (config, wallet, header, certificati).</summary>