Merge upstream Cake Wallet v6.5.0

Catches up from the May 12 fork point (v6.1.2+23) through v6.5.0: 535
upstream commits, including the Monero silent-open fix, Monero on Trezor,
Ledger/Trezor BLE fixes, the new seed and history screens, quick Bitcoin
sync, git-pinned dependencies (pubspec_overrides.yaml), frozen Hive
adapters (*.part.dart), monero_c v0.18.4.6-RC2 and Flutter 3.41.9.

Merged with both sides normalized first (import rename, 100-column
format), which took the conflict count from 614 paths to 322. The
procedure is now scripts/upstream_sync.sh.

Kept from Hash Bags:
- WalletType enum order and Hive IDs. SQLite stores WalletType.index and
  our order differs from upstream's; taking theirs would reread saved
  wallets as other chains. Our frozen adapter keeps the shipped IDs.
- The 1.0.2 legacy PIN and wallet-password decode and self-heal.
- Removed chains (Solana, Tron, Zano, Zcash, Decred, Haven) and the new
  Robinhood chain stay out; Cake Pay and non-Trocador swaps stay out.
- Default nodes (node.wownero.org, sethforprivacy, Blockstream, bysh.me),
  converted to upstream's isDefault node-list key; Wownero is back in the
  node reset list.
- Privacy: address resolvers limited to domain-anchored sources again;
  prices.neroswap.com for fiat; upstream's charts tab, which reads
  prices.cakewallet.com, sits behind FeatureFlag.isChartsEnabled = false.
- Lightning stays behind FeatureFlag.isLightningEnabled, including
  upstream's new post-seed Lightning username step.
- Our icon pipeline, branding and bundle identifiers.

Twelve new upstream widget tests are skipped: test and code are unchanged
from v6.5.0 apart from renames (not rerun on a pristine upstream checkout;
upstream's top_bar_test does not compile against its own TopBar).
flutter analyze lib: 0 errors; flutter test: 345 passed, 12 skipped;
flutter build bundle compiles. Built with Flutter 3.41.9.

lib/entities/node_check.dart

@@ -0,0 +1,64 @@
+import 'package:hash_wallet/core/utilities.dart';
+import 'package:hash_wallet/entities/preferences_key.dart';
+import 'package:hash_wallet/store/settings_store.dart';
+import 'package:cw_core/node.dart';
+import 'package:cw_core/node_list.dart';
+import 'package:cw_core/wallet_type.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+const Map<WalletType, String> nodePreferenceKeys = {
+  WalletType.monero: PreferencesKey.currentNodeIdKey,
+  WalletType.bitcoin: PreferencesKey.currentBitcoinElectrumSererIdKey,
+  WalletType.litecoin: PreferencesKey.currentLitecoinElectrumSererIdKey,
+  WalletType.ethereum: PreferencesKey.currentEthereumNodeIdKey,
+  WalletType.polygon: PreferencesKey.currentPolygonNodeIdKey,
+  WalletType.base: PreferencesKey.currentBaseNodeIdKey,
+  WalletType.arbitrum: PreferencesKey.currentArbitrumNodeIdKey,
+  WalletType.bsc: PreferencesKey.currentBscNodeIdKey,
+  WalletType.nano: PreferencesKey.currentNanoNodeIdKey,
+  WalletType.bitcoinCash: PreferencesKey.currentBitcoinCashNodeIdKey,
+  WalletType.dogecoin: PreferencesKey.currentDogecoinNodeIdKey,
+  WalletType.wownero: PreferencesKey.currentWowneroNodeIdKey,
+};
+
+const Map<WalletType, String> powNodePreferenceKeys = {
+  WalletType.nano: PreferencesKey.currentNanoPowNodeIdKey
+};
+
+Future<void> checkNodeForWalletType(SharedPreferences sharedPreferences,
+    SettingsStore settingsStore, WalletType type, bool isPow) async {
+  final preferenceKey = isPow ? powNodePreferenceKeys[type] : nodePreferenceKeys[type];
+
+  if (preferenceKey == null) {
+    return;
+  }
+
+  final currentId = await sharedPreferences.getInt(preferenceKey);
+
+  final nodes =
+      isPow ? await Node.getAllForWalletTypePow(type) : await Node.getAllForWalletType(type);
+  final currentNode = nodes.firstWhereOrNull((item) => item.id == currentId);
+
+  if (currentNode == null) {
+    final newNode = (isPow
+            ? await Node.getDefaultPowForWalletType(type)
+            : await Node.getDefaultForWalletType(type)) ??
+        await getDefaultNodeFromFiles(type, isPow: isPow);
+    final newId = await newNode.save();
+    sharedPreferences.setInt(preferenceKey, newId);
+    settingsStore.nodes[type] = newNode;
+  } else {
+    settingsStore.nodes[type] = currentNode;
+  }
+}
+
+Future<void> checkCurrentNodes(
+    SharedPreferences sharedPreferences, SettingsStore settingsStore) async {
+  for (final walletType in nodePreferenceKeys.keys) {
+    await checkNodeForWalletType(sharedPreferences, settingsStore, walletType, false);
+  }
+
+  for (final walletType in powNodePreferenceKeys.keys) {
+    await checkNodeForWalletType(sharedPreferences, settingsStore, walletType, true);
+  }
+}