Yattee v2 rewrite

Yattee/Core/AppIdentifiers.swift

@@ -0,0 +1,36 @@
+import Foundation
+
+/// Centralized app identifiers - single source of truth for all app-wide identifiers.
+enum AppIdentifiers {
+    // MARK: - Base Identifier
+
+    static let bundleIdentifier = "stream.yattee.app"
+
+    // MARK: - iCloud
+
+    static var iCloudContainer: String {
+        "iCloud.\(bundleIdentifier)"
+    }
+
+    // MARK: - Background Tasks
+
+    static var backgroundFeedRefresh: String {
+        "\(bundleIdentifier).feedRefresh"
+    }
+
+    // MARK: - User Activities (Handoff)
+
+    static var handoffActivityType: String {
+        "\(bundleIdentifier).activity"
+    }
+
+    // MARK: - URL Sessions
+
+    static let downloadSession = "stream.yattee.downloads"
+
+    // MARK: - Logging
+
+    static var logSubsystem: String {
+        bundleIdentifier
+    }
+}