fix(webview): release retained macOS views before profile removal

ui/flutter/third_party/README.md

@@ -18,6 +18,8 @@ Local native changes are limited to:
   setting and attach the profile before navigation.
 - `MyCookieManager`: route cookie operations to the requested profile, capturing
   the store per operation so asynchronous calls cannot cross profiles.
+- macOS `FlutterWebViewController`: weakly register profile views so uninstall
+  can release their WKWebViews even when Flutter retains a platform-view wrapper.
 
 `lib/app/rpc/webview_profile.dart` uses the existing plugin method channel and
 serializes these internal settings. No extension JavaScript API is added.

ui/flutter/third_party/flutter_inappwebview_macos/macos/Classes/GopeedProfiles.swift

@@ -7,8 +7,25 @@ import FlutterMacOS
 final class GopeedProfiles {
     private static var proxyURLs: [String: String] = [:]
     private static var stores: [String: WKWebsiteDataStore] = [:]
+    private static var views: [String: NSHashTable<FlutterWebViewController>] = [:]
     static func store(_ identifier: String) -> WKWebsiteDataStore? { stores[identifier] }
 
+    static func register(_ view: FlutterWebViewController, identifier: String) {
+        let profileViews = views[identifier] ?? NSHashTable<FlutterWebViewController>.weakObjects()
+        profileViews.add(view)
+        views[identifier] = profileViews
+    }
+
+    private static func disposeViews(_ identifier: String) {
+        // Flutter may retain a removed platform-view wrapper beyond the frame
+        // boundary. Release its WKWebView now, before deleting the named store.
+        // The host has already closed all pages belonging to this profile.
+        let profileViews = views.removeValue(forKey: identifier)
+        for view in profileViews?.allObjects ?? [] {
+            view.dispose(removeFromSuperview: true)
+        }
+    }
+
     static func prepare(arguments: NSDictionary?, result: @escaping FlutterResult) {
         guard #available(macOS 14.0, iOS 17.0, *),
               let identifier = arguments?["gopeedProfileId"] as? String,
@@ -45,6 +62,7 @@ final class GopeedProfiles {
         }
         // Deleting a named store alone can leave in-process cookie caches.
         // Clear every website data type before releasing/removing the store.
+        disposeViews(identifier)
         let store = stores[identifier] ?? WKWebsiteDataStore(forIdentifier: uuid)
         store.removeData(ofTypes: WKWebsiteDataStore.allWebsiteDataTypes(), modifiedSince: Date.distantPast) {
             stores.removeValue(forKey: identifier)

ui/flutter/third_party/flutter_inappwebview_macos/macos/Classes/InAppWebView/FlutterWebViewController.swift

@@ -68,6 +68,9 @@ public class FlutterWebViewController: NSView, Disposable {
         webView!.settings = settings
         webView!.prepare()
         webView!.windowCreated = true
+        if let identifier = initialSettings["gopeedProfileId"] as? String {
+            GopeedProfiles.register(self, identifier: identifier)
+        }
     }
     
     required init?(coder nsCoder: NSCoder) {