Label the local context by where its data actually lives

"Yattee (iCloud)" was hardcoded for the local data context even with
iCloud sync disabled, when the data is purely on-device. The name now
comes from DataContextValidator.localContextName, which checks
iCloudSyncEnabled and falls back to "Yattee (This Device)".

Yattee/Localizable.xcstrings

@@ -18439,6 +18439,16 @@
         }
       }
     },
+    "subscriptions.account.local.device" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Yattee (This Device)"
+          }
+        }
+      }
+    },
     "subscriptions.account.pipedInstance %@" : {
       "localizations" : {
         "en" : {

Yattee/Services/Subscriptions/DataContextValidator.swift

@@ -259,16 +259,25 @@ final class DataContextValidator {
     func displayName(for context: DataContext) -> String {
         switch context {
         case .local:
-            return String(localized: "subscriptions.account.local")
+            return localContextName
 
         case let .account(id):
             guard let account = accountsManager.account(id: id) else {
-                return String(localized: "subscriptions.account.local")
+                return localContextName
             }
             return displayName(for: account)
         }
     }
 
+    /// "(iCloud)" only when the data actually syncs; otherwise it lives on
+    /// this device alone and the label says so.
+    var localContextName: String {
+        if appEnvironment?.settingsManager.iCloudSyncEnabled == true {
+            return String(localized: "subscriptions.account.local")
+        }
+        return String(localized: "subscriptions.account.local.device")
+    }
+
     /// User-set label, else whatever the account falls back to.
     func displayName(for account: Account) -> String {
         if let name = account.displayName, !name.isEmpty { return name }

Yattee/Views/Components/DataContextSwitcherMenu.swift

@@ -99,7 +99,7 @@ enum DataContextSwitcherLabels {
     /// The context's name, plus whatever the user needs to tell it apart.
     @MainActor
     static func title(for context: DataContext, in appEnvironment: AppEnvironment?) -> String {
-        guard let appEnvironment else { return String(localized: "subscriptions.account.local") }
+        guard let appEnvironment else { return String(localized: "subscriptions.account.local.device") }
 
         return title(
             for: context,