feat: open-source 小浣熊阅读 for iOS

App/Features/Settings/AppDiagnostics.swift

@@ -0,0 +1,22 @@
+import Foundation
+import MetricKit
+
+final class AppDiagnostics: NSObject, MXMetricManagerSubscriber, @unchecked Sendable {
+    static let shared = AppDiagnostics()
+
+    func start() {
+        MXMetricManager.shared.add(self)
+        DiagnosticLog.shared.record(category: "应用", message: "启动 \(Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String ?? "")")
+    }
+
+    func didReceive(_ payloads: [MXDiagnosticPayload]) {
+        for payload in payloads {
+            for crash in payload.crashDiagnostics ?? [] {
+                DiagnosticLog.shared.record(.error, category: "系统诊断", message: "崩溃诊断：\(String(decoding: crash.jsonRepresentation(), as: UTF8.self))")
+            }
+            for hang in payload.hangDiagnostics ?? [] {
+                DiagnosticLog.shared.record(.warning, category: "系统诊断", message: "卡顿诊断：\(String(decoding: hang.jsonRepresentation(), as: UTF8.self))")
+            }
+        }
+    }
+}