refactor: rename plugin safari-auth to native-bridge (#749)

* fix: layout tweaks for mobile

* refactor: rename plugin safari-auth to native-bridge

apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/ios/Sources/NativeBridgePlugin.swift

@@ -0,0 +1,55 @@
+import AuthenticationServices
+import SwiftRs
+import Tauri
+import UIKit
+import WebKit
+
+class SafariAuthRequestArgs: Decodable {
+  let authUrl: String
+}
+
+class NativeBridgePlugin: Plugin {
+  private var authSession: ASWebAuthenticationSession?
+
+  @objc public func auth_with_safari(_ invoke: Invoke) throws {
+    let args = try invoke.parseArgs(SafariAuthRequestArgs.self)
+    let authUrl = URL(string: args.authUrl)!
+
+    authSession = ASWebAuthenticationSession(url: authUrl, callbackURLScheme: "readest") {
+      [weak self] callbackURL, error in
+      guard let strongSelf = self else { return }
+
+      if let error = error {
+        Logger.error("Auth session error: \(error.localizedDescription)")
+        invoke.reject(error.localizedDescription)
+        return
+      }
+
+      if let callbackURL = callbackURL {
+        Logger.info("Auth session callback URL: \(callbackURL.absoluteString)")
+        strongSelf.authSession?.cancel()
+        strongSelf.authSession = nil
+        invoke.resolve(["redirectUrl": callbackURL.absoluteString])
+      }
+    }
+
+    if #available(iOS 13.0, *) {
+      authSession?.presentationContextProvider = self
+    }
+
+    let started = authSession?.start() ?? false
+    Logger.info("Auth session start result: \(started)")
+  }
+}
+
+@_cdecl("init_plugin_native_bridge")
+func initPlugin() -> Plugin {
+  return NativeBridgePlugin()
+}
+
+@available(iOS 13.0, *)
+extension NativeBridgePlugin: ASWebAuthenticationPresentationContextProviding {
+  func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
+    return UIApplication.shared.windows.first ?? UIWindow()
+  }
+}