fix: CombineベースのAPIを新しいSwift Concurrency APIに置き換え

削除されたCombine関係のAPI（FirestoreModelTypeAction, SnapshotInputParameter, Message.multiple）を、
新しいSwift ConcurrencyベースのAPIに置き換えました。

Changes:
- import Combineを削除
- cancellablesをlistenerTaskに置き換え
- FirestoreClient.listen()を使用してAsyncThrowingStreamで監視
- deinitでタスクをキャンセル

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: fummicc1

Examples/Example/Example.xcodeproj/project.pbxproj

@@ -419,7 +419,7 @@
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = S8WBNKMKYU;
+				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = StorageExample/Info.plist;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
@@ -449,7 +449,7 @@
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = S8WBNKMKYU;
+				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = StorageExample/Info.plist;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
@@ -594,7 +594,7 @@
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = 2X6AD4W323;
+				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = "$(SRCROOT)/FirestoreExample/Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 15.6;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -615,7 +615,7 @@
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = 2X6AD4W323;
+				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = "$(SRCROOT)/FirestoreExample/Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 15.6;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -637,7 +637,7 @@
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = 2X6AD4W323;
+				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = AuthExample/Info.plist;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
@@ -667,7 +667,7 @@
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = 2X6AD4W323;
+				DEVELOPMENT_TEAM = "";
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = AuthExample/Info.plist;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;

Examples/Practical/BoardApplication/BoardApplication/Model.swift

@@ -1,4 +1,3 @@
-import Combine
 import EasyFirebaseFirestore
 import Foundation
 
@@ -9,18 +8,23 @@ class Model: ObservableObject {
     @Published var nickName: String = ""
     @Published var newMessageText: String = ""
 
-    private var cancellables: Set<AnyCancellable> = []
+    private var listenerTask: Task<Void, Never>?
     private let firestoreClient: FirestoreClient = FirestoreClient()
 
     init() {
-        let action = FirestoreModelTypeAction<Message>
-            .snapshots(SnapshotInputParameter.Default())
-        Message.multiple(for: action, client: firestoreClient)
-            .sink { _ in
-            } receiveValue: { messages in
-                self.list = messages
+        listenerTask = Task {
+            do {
+                for try await messages in await firestoreClient.listen() as AsyncThrowingStream<[Message], Error> {
+                    self.list = messages
+                }
+            } catch {
+                print("Error listening to messages: \(error)")
             }
-            .store(in: &cancellables)
+        }
+    }
+
+    deinit {
+        listenerTask?.cancel()
     }
 
     func create() async {