Hardcoded appName cake_wallet -> hash_wallet + nuke changelog modal + Wownero up top

Three semi-independent fixes flagged from a user-facing testing pass:

1. cw_core/lib/root_dir.dart had a hardcoded 'cake_wallet' for the
   Linux app data dir, bypassing the binary name entirely. That's why
   ~/.config/cake_wallet/ kept being created even after the project
   rename. Changed appName const to hash_wallet. Also:
   - CAKE_WALLET_DIR env-var override -> HASH_WALLET_DIR (with the
     old name kept as a fallback so users migrating from a Cake
     install via env-var don't lose their path).
   - linuxSymlinkSharedPreferences kept the legacy
     ['com.example.cake_wallet','cake_wallet'] paths in the migration
     array so existing Cake users get auto-migrated into hash_wallet's
     new home on first launch of the fork.

2. lib/new-ui/new_dashboard.dart: commented out the
   Future.delayed(300ms).then(_showChangelog) trigger. The changelog
   content lives under assets/new-ui/changelog/text and describes
   Cake's v6.1.0 release notes — not ours. The 'View more info' button
   inside the modal launched blog.cakewallet.com. Re-enable once we
   write our own changelog content.

3. tool/configure.dart: WalletType.wownero hoisted to the top of the
   generated availableWalletTypes list. It's the reason this fork
   exists, so it should be the first choice in create / restore
   pickers. Monero stays as #2.

cw_core/lib/root_dir.dart

@@ -24,7 +24,10 @@ bool get isNonAmnesticTails {
 bool showNotice = true;
 
 void setRootDirFromEnv() =>
-    _rootDirPath = Platform.environment['CAKE_WALLET_DIR'];
+    // HASH_WALLET_DIR is the canonical override; CAKE_WALLET_DIR kept as a
+    // fallback so users migrating from a Cake install via env-var override
+    // don't lose their path.
+    _rootDirPath = Platform.environment['HASH_WALLET_DIR'] ?? Platform.environment['CAKE_WALLET_DIR'];
 
 void copyDirectory(Directory source, Directory destination) {
   source.listSync(recursive: false).forEach((var entity) {
@@ -42,8 +45,11 @@ void copyDirectory(Directory source, Directory destination) {
 Future<void> linuxSymlinkSharedPreferences() async {
   if (!Platform.isLinux) return; // nuh-uh
   final dataHome = Platform.environment["XDG_DATA_HOME"] ?? p.join(Platform.environment["HOME"] ?? "", ".local", "share");
-  var cakeNames = ['com.example.cake_wallet', 'cake_wallet'];
-  for (String name in cakeNames) {
+  // Names to migrate from on startup. Includes the legacy Cake paths so users
+  // forking from a previous Cake install get their data automatically
+  // symlinked into Hash Wallet's new home (~/.local/share/hash_wallet).
+  var legacyNames = ['com.example.cake_wallet', 'cake_wallet'];
+  for (String name in legacyNames) {
     final oldPath = p.join(dataHome, name);
     final newPath = p.join((await getAppDir()).path, "_local_share");
     final oldDir = Directory(oldPath);
@@ -70,7 +76,7 @@ Future<void> linuxSymlinkSharedPreferences() async {
 }
 
 Future<Directory> getAppDir() async {
-  const String appName = 'cake_wallet';
+  const String appName = 'hash_wallet';
   Directory dir;
 
   if (_rootDirPath != null && _rootDirPath!.isNotEmpty) {

tool/configure.dart

@@ -1956,6 +1956,11 @@ Future<void> generateWalletTypes({
   const outputDefinition = 'final availableWalletTypes = <WalletType>[';
   var outputContent = outputHeader + '\n\n' + outputDefinition + '\n';
 
+  // Hash Wallet: Wownero up top — it's the reason this fork exists.
+  if (hasWownero) {
+    outputContent += '\tWalletType.wownero,\n';
+  }
+
   if (hasMonero) {
     outputContent += '\tWalletType.monero,\n';
   }
@@ -2024,9 +2029,7 @@ Future<void> generateWalletTypes({
     outputContent += '\tWalletType.banano,\n';
   }
 
-  if (hasWownero) {
-    outputContent += '\tWalletType.wownero,\n';
-  }
+  // (Wownero moved to the top of this list — see comment above.)
 
   outputContent += '];\n';
   await walletTypesFile.writeAsString(outputContent);