Initial project

apps/im_app/.gitignore

@@ -0,0 +1,45 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.build/
+.buildlog/
+.history
+.svn/
+.swiftpm/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins-dependencies
+.pub-cache/
+.pub/
+/build/
+/coverage/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

apps/im_app/.metadata

@@ -0,0 +1,30 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "ff37bef603469fb030f2b72995ab929ccfc227f0"
+  channel: "stable"
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+    - platform: ios
+      create_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+      base_revision: ff37bef603469fb030f2b72995ab929ccfc227f0
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

apps/im_app/README.md

@@ -0,0 +1,3 @@
+# im_app
+
+A new Flutter project.

apps/im_app/analysis_options.yaml

@@ -0,0 +1 @@
+include: package:flutter_lints/flutter.yaml

apps/im_app/android/.gitignore

@@ -0,0 +1,14 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+.cxx/
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/to/reference-keystore
+key.properties
+**/*.keystore
+**/*.jks

apps/im_app/android/app/build.gradle.kts

@@ -0,0 +1,76 @@
+plugins {
+    id("com.android.application")
+    id("kotlin-android")
+    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
+    id("dev.flutter.flutter-gradle-plugin")
+}
+
+android {
+    namespace = "com.cusotmer.im.im_app"
+    compileSdk = flutter.compileSdkVersion
+    ndkVersion = flutter.ndkVersion
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+        isCoreLibraryDesugaringEnabled = true
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId = "com.cusotmer.im.im_app"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://flutter.dev/to/review-gradle-config.
+        minSdk = flutter.minSdkVersion
+        targetSdk = flutter.targetSdkVersion
+        versionCode = flutter.versionCode
+        versionName = flutter.versionName
+
+        ndk {
+            // 只支持 arm64-v8a，减少包体积（现代 Android 设备均为 64-bit）
+            abiFilters += "arm64-v8a"
+        }
+    }
+
+    packaging {
+        jniLibs {
+            // 排除其他架构的 .so，防止第三方库把 armeabi-v7a / x86 带进包
+            excludes += setOf(
+                "lib/armeabi-v7a/**",
+                "lib/x86/**",
+                "lib/x86_64/**",
+            )
+        }
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig = signingConfigs.getByName("debug")
+
+            // R8 代码压缩：移除未使用的 Java/Kotlin 代码（来自依赖库）
+            isMinifyEnabled = true
+            // 资源压缩：移除未引用的 drawable / layout / string
+            isShrinkResources = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro",
+            )
+        }
+    }
+}
+
+flutter {
+    source = "../.."
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
+    }
+}
+
+dependencies {
+    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.5")
+}

apps/im_app/android/app/proguard-rules.pro

@@ -0,0 +1,9 @@
+# Flutter
+-keep class io.flutter.** { *; }
+-keep class io.flutter.plugins.** { *; }
+-dontwarn io.flutter.embedding.**
+
+# Dart / Flutter engine（避免混淆后反射找不到类）
+-keep class com.cusotmer.im.** { *; }
+
+# 如有第三方 SDK 需要 keep，在此追加

apps/im_app/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

apps/im_app/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,45 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application
+        android:label="im_app"
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:launchMode="singleTop"
+            android:taskAffinity=""
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+    </queries>
+</manifest>

apps/im_app/android/app/src/main/kotlin/com/cusotmer/im/im_app/MainActivity.kt

@@ -0,0 +1,5 @@
+package com.cusotmer.im.im_app
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity : FlutterActivity()

apps/im_app/android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

apps/im_app/android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

apps/im_app/android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

apps/im_app/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             the Flutter engine draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

apps/im_app/android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- The INTERNET permission is required for development. Specifically,
+         the Flutter tool needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

apps/im_app/android/build.gradle.kts

@@ -0,0 +1,31 @@
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+val newBuildDir: Directory =
+    rootProject.layout.buildDirectory
+        .dir("../../build")
+        .get()
+rootProject.layout.buildDirectory.value(newBuildDir)
+
+subprojects {
+    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
+    project.layout.buildDirectory.value(newSubprojectBuildDir)
+}
+subprojects {
+    project.evaluationDependsOn(":app")
+}
+
+// Suppress obsolete -source/-target 8 warnings from third-party packages
+subprojects {
+    tasks.withType<JavaCompile>().configureEach {
+        options.compilerArgs.add("-Xlint:-options")
+    }
+}
+
+tasks.register<Delete>("clean") {
+    delete(rootProject.layout.buildDirectory)
+}

apps/im_app/android/gradle.properties

@@ -0,0 +1,2 @@
+org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
+android.useAndroidX=true

apps/im_app/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-all.zip

apps/im_app/android/settings.gradle.kts

@@ -0,0 +1,26 @@
+pluginManagement {
+    val flutterSdkPath =
+        run {
+            val properties = java.util.Properties()
+            file("local.properties").inputStream().use { properties.load(it) }
+            val flutterSdkPath = properties.getProperty("flutter.sdk")
+            require(flutterSdkPath != null) { "flutter.sdk not set in local.properties" }
+            flutterSdkPath
+        }
+
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
+
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+plugins {
+    id("dev.flutter.flutter-plugin-loader") version "1.0.0"
+    id("com.android.application") version "8.11.1" apply false
+    id("org.jetbrains.kotlin.android") version "2.2.20" apply false
+}
+
+include(":app")

apps/im_app/build.yaml

@@ -0,0 +1,6 @@
+targets:
+  $default:
+    builders:
+      drift_dev|preparing_builder:
+        generate_for:
+          - lib/**

apps/im_app/config/config.json

@@ -0,0 +1,4 @@
+{
+  "IS_DEV": true,
+  "API_BASE_URL": "https://dev-api.example.com"
+}

apps/im_app/ios/.gitignore

@@ -0,0 +1,34 @@
+**/dgph
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/ephemeral/
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3

apps/im_app/ios/Flutter/AppFrameworkInfo.plist

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+</dict>
+</plist>

apps/im_app/ios/Flutter/Debug.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"

apps/im_app/ios/Flutter/Release.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"

apps/im_app/ios/Podfile

@@ -0,0 +1,42 @@
+platform :ios, '17.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_ios_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+  target 'RunnerTests' do
+    inherit! :search_paths
+  end
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_ios_build_settings(target)
+  end
+end

apps/im_app/ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,750 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		331C808B294A63AB00263BE5 /* RunnerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 331C807B294A618700263BE5 /* RunnerTests.swift */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
+		4AF8AC8CCD305DA5219C08B6 /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1D1569589D1A8DD0B778AFE6 /* Pods_Runner.framework */; };
+		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
+		7884E8682EC3CC0700C636F2 /* SceneDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7884E8672EC3CC0400C636F2 /* SceneDelegate.swift */; };
+		80500FBD20ABA2A35C57BC6B /* Pods_RunnerTests.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 8C85B542015499C5482C6CB8 /* Pods_RunnerTests.framework */; };
+		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
+		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
+		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXContainerItemProxy section */
+		331C8085294A63A400263BE5 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 97C146E61CF9000F007C117D /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 97C146ED1CF9000F007C117D;
+			remoteInfo = Runner;
+		};
+/* End PBXContainerItemProxy section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
+		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
+		1C416905D0EA345032C4E612 /* Pods-RunnerTests.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RunnerTests.release.xcconfig"; path = "Target Support Files/Pods-RunnerTests/Pods-RunnerTests.release.xcconfig"; sourceTree = "<group>"; };
+		1D1569589D1A8DD0B778AFE6 /* Pods_Runner.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Runner.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+		2742F60AD86140513F6B3160 /* Pods-RunnerTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RunnerTests.debug.xcconfig"; path = "Target Support Files/Pods-RunnerTests/Pods-RunnerTests.debug.xcconfig"; sourceTree = "<group>"; };
+		331C807B294A618700263BE5 /* RunnerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RunnerTests.swift; sourceTree = "<group>"; };
+		331C8081294A63A400263BE5 /* RunnerTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = RunnerTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
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+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.cusotmer.im.imApp.RunnerTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Runner.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/Runner";
+			};
+			name = Debug;
+		};
+		331C8089294A63A400263BE5 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 1C416905D0EA345032C4E612 /* Pods-RunnerTests.release.xcconfig */;
+			buildSettings = {
+				BUNDLE_LOADER = "$(TEST_HOST)";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				GENERATE_INFOPLIST_FILE = YES;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.cusotmer.im.imApp.RunnerTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Runner.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/Runner";
+			};
+			name = Release;
+		};
+		331C808A294A63A400263BE5 /* Profile */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 9538107A41BCB5B5D84FBAF3 /* Pods-RunnerTests.profile.xcconfig */;
+			buildSettings = {
+				BUNDLE_LOADER = "$(TEST_HOST)";
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				GENERATE_INFOPLIST_FILE = YES;
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = com.cusotmer.im.imApp.RunnerTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 5.0;
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Runner.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/Runner";
+			};
+			name = Profile;
+		};
+		97C147031CF9000F007C117D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = NO;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		97C147041CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = NO;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = iphoneos;
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
+				TARGETED_DEVICE_FAMILY = "1,2";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
+		97C147061CF9000F007C117D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 17;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = com.cusotmer.im.imApp;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
+				SUPPORTS_MACCATALYST = NO;
+				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = NO;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = 1;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Debug;
+		};
+		97C147071CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 17;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = com.cusotmer.im.imApp;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
+				SUPPORTS_MACCATALYST = NO;
+				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = NO;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = 1;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		331C8087294A63A400263BE5 /* Build configuration list for PBXNativeTarget "RunnerTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				331C8088294A63A400263BE5 /* Debug */,
+				331C8089294A63A400263BE5 /* Release */,
+				331C808A294A63A400263BE5 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147031CF9000F007C117D /* Debug */,
+				97C147041CF9000F007C117D /* Release */,
+				249021D3217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

apps/im_app/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

apps/im_app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

apps/im_app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

apps/im_app/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1510"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      customLLDBInitFile = "$(SRCROOT)/Flutter/ephemeral/flutter_lldbinit"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "331C8080294A63A400263BE5"
+               BuildableName = "RunnerTests.xctest"
+               BlueprintName = "RunnerTests"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      customLLDBInitFile = "$(SRCROOT)/Flutter/ephemeral/flutter_lldbinit"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      enableGPUValidationMode = "1"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

apps/im_app/ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

apps/im_app/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

apps/im_app/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

apps/im_app/ios/Runner/AppDelegate.swift

@@ -0,0 +1,25 @@
+import Flutter
+import UIKit
+
+@main
+@objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {
+
+  override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+
+  override func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
+    let sceneConfig = UISceneConfiguration(
+      name: "Default Configuration",
+      sessionRole: connectingSceneSession.role
+    )
+    sceneConfig.delegateClass = SceneDelegate.self
+    return sceneConfig
+  }
+
+  // MARK: - FlutterImplicitEngineDelegate
+
+  func didInitializeImplicitFlutterEngine(_ engineBridge: FlutterImplicitEngineBridge) {
+    GeneratedPluginRegistrant.register(with: engineBridge.pluginRegistry)
+  }
+}

apps/im_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,14 @@
+{
+  "images" : [
+    {
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

apps/im_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

apps/im_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md

@@ -0,0 +1,5 @@
+# Launch Screen Assets
+
+You can customize the launch screen with your own desired assets by replacing the image files in this directory.
+
+You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images.

apps/im_app/ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
+                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="LaunchImage" width="168" height="185"/>
+    </resources>
+</document>

apps/im_app/ios/Runner/Base.lproj/Main.storyboard

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+    </dependencies>
+    <scenes>
+        <!--Flutter View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

apps/im_app/ios/Runner/Info.plist

@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>Im App</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>im_app</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneClassName</key>
+					<string>UIWindowScene</string>
+					<key>UISceneConfigurationName</key>
+					<string>flutter</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

apps/im_app/ios/Runner/Runner-Bridging-Header.h

@@ -0,0 +1 @@
+#import "GeneratedPluginRegistrant.h"

apps/im_app/ios/Runner/SceneDelegate.swift

@@ -0,0 +1,29 @@
+import UIKit
+import Flutter
+
+@objc class SceneDelegate: FlutterSceneDelegate {
+  var flutterViewController: FlutterViewController?
+
+  override func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
+    guard let windowScene = scene as? UIWindowScene else { return }
+
+    window = UIWindow(windowScene: windowScene)
+
+    let flutterVC = FlutterViewController()
+    flutterViewController = flutterVC
+
+    window?.rootViewController = flutterVC
+    window?.makeKeyAndVisible()
+
+    registerSceneLifeCycle(with: flutterVC.engine)
+
+    super.scene(scene, willConnectTo: session, options: connectionOptions)
+  }
+
+  override func sceneDidDisconnect(_ scene: UIScene) {
+    if let flutterVC = flutterViewController {
+      self.unregisterSceneLifeCycle(with: flutterVC.engine)
+    }
+    super.sceneDidDisconnect(scene)
+  }
+}

apps/im_app/ios/RunnerTests/RunnerTests.swift

@@ -0,0 +1,12 @@
+import Flutter
+import UIKit
+import XCTest
+
+class RunnerTests: XCTestCase {
+
+  func testExample() {
+    // If you add code to the Runner application, consider adding tests here.
+    // See https://developer.apple.com/documentation/xctest for more information about using XCTest.
+  }
+
+}

apps/im_app/lib/app/app.dart

@@ -0,0 +1,71 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../core/ui/base/app_theme.dart';
+import 'di/app_providers.dart';
+import 'di/network_provider.dart';
+import 'router/app_router.dart';
+
+/// 应用根组件
+///
+/// 职责：
+/// - 路由配置（go_router，含登录守卫）
+/// - 主题配置（亮色 / 暗色 / 跟随系统）
+/// - App 生命周期监听（前后台切换 → WebSocket 断连/重连）
+/// - 启动初始化（[AppInitializer] 两阶段串行队列）
+///
+/// ## 启动初始化
+///
+/// 通过 [appInitializerProvider] 声明任务，两阶段串行执行：
+/// - Critical：首帧前，只放必须阻塞的任务
+/// - Deferred：首帧后，不争抢资源、不卡 UI
+///
+/// 详见 [AppInitializer] 文档。
+class IMApp extends ConsumerStatefulWidget {
+  const IMApp({super.key});
+
+  @override
+  ConsumerState<IMApp> createState() => _IMAppState();
+}
+
+class _IMAppState extends ConsumerState<IMApp> with WidgetsBindingObserver {
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addObserver(this);
+    ref.read(appInitializerProvider).run();
+  }
+
+  @override
+  void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
+    super.dispose();
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    final socketManager = ref.read(socketManagerProvider);
+
+    switch (state) {
+      case AppLifecycleState.resumed:
+        socketManager.onEnterForeground();
+      case AppLifecycleState.paused:
+        socketManager.onEnterBackground();
+      case AppLifecycleState.inactive:
+      case AppLifecycleState.detached:
+      case AppLifecycleState.hidden:
+        break;
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp.router(
+      title: 'IM App', // TODO: 接入国际化
+      theme: AppTheme.theme,
+      darkTheme: AppTheme.darkTheme,
+      themeMode: ref.watch(themeModeProvider),
+      routerConfig: ref.watch(routerProvider),
+    );
+  }
+}

apps/im_app/lib/app/bootstrap.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import 'app.dart';
+
+void bootstrap() {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  // ProviderScope 包裹全局，network_provider 等 Provider 懒加载单例
+  runApp(
+    const ProviderScope(
+      child: IMApp(),
+    ),
+  );
+}

apps/im_app/lib/app/di/app_providers.dart

@@ -0,0 +1,141 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../core/services/app_initializer.dart';
+import 'network_provider.dart';
+
+// ── 认证 ──────────────────────────────────────────────────────────────────────
+
+/// 登录状态管理
+///
+/// 同时继承 [ChangeNotifier]，作为 go_router [GoRouter.refreshListenable] 使用，
+/// 登录 / 退出时 go_router 自动重新执行 redirect，无需手动触发。
+///
+/// ## 当前状态
+///
+/// Demo 实现，无持久化。storage_sdk 就绪后替换为：
+/// - `build`：从安全存储读取 token，有则视为已登录
+/// - `login` / `logout`：同步更新安全存储
+class AuthNotifier extends ChangeNotifier {
+  bool _isLoggedIn = false;
+
+  bool get isLoggedIn => _isLoggedIn;
+
+  void login() {
+    _isLoggedIn = true;
+    notifyListeners();
+  }
+
+  void logout() {
+    _isLoggedIn = false;
+    notifyListeners();
+  }
+}
+
+/// 登录状态 Provider
+///
+/// 使用 [Provider] 持有 [AuthNotifier] 单例。
+/// go_router 通过 [GoRouter.refreshListenable] 直接监听 [AuthNotifier]（ChangeNotifier），
+/// Riverpod 侧不需要响应式更新（导航由 go_router 接管）。
+final authNotifierProvider = Provider<AuthNotifier>(
+  (ref) => AuthNotifier(),
+);
+
+// ── 主题 ──────────────────────────────────────────────────────────────────────
+
+/// 主题模式 Notifier — 控制应用全局亮 / 暗主题
+///
+/// 启动时从持久化存储读取上次保存的主题模式，无则默认跟随系统。
+/// 切换时先更新内存状态，再写入持久化存储。
+///
+/// ## storage_sdk 接入步骤
+///
+/// 1. 在 `build()` 解开 TODO：读取存储值作为初始模式
+/// 2. 在 `setMode()` 解开 TODO：每次切换后写入存储
+/// 3. 若存储接口是异步的，将 `Notifier<ThemeMode>` 改为
+///    `AsyncNotifier<ThemeMode>`，`build()` 改为 `Future<ThemeMode>`
+class ThemeModeNotifier extends Notifier<ThemeMode> {
+  @override
+  ThemeMode build() {
+    // TODO: storage_sdk 就绪后从持久化读取初始值：
+    // final saved = ref.read(themeStorageProvider).readThemeMode();
+    // return saved ?? ThemeMode.system;
+    return ThemeMode.system;
+  }
+
+  void setMode(ThemeMode mode) {
+    state = mode;
+    // TODO: storage_sdk 就绪后写入持久化：
+    // ref.read(themeStorageProvider).saveThemeMode(mode);
+  }
+}
+
+/// 主题模式 Provider
+///
+/// ## Setting 页切换（只需一行）
+///
+/// ```dart
+/// ref.read(themeModeProvider.notifier).setMode(ThemeMode.system);
+/// ref.read(themeModeProvider.notifier).setMode(ThemeMode.light);
+/// ref.read(themeModeProvider.notifier).setMode(ThemeMode.dark);
+/// ```
+///
+/// ## 持久化（storage_sdk TODO）
+///
+/// 读取和写入的 TODO 均在 [ThemeModeNotifier] 内，接入 storage_sdk 后解开即可。
+final themeModeProvider = NotifierProvider<ThemeModeNotifier, ThemeMode>(
+  ThemeModeNotifier.new,
+);
+
+// ── 启动初始化 ────────────────────────────────────────────────────────────────
+
+/// AppInitializer Provider
+///
+/// 集中声明所有启动初始化任务，app.dart 只需一行 `.run()`。
+///
+/// ## 任务分类规则
+///
+/// 问自己：「这个任务不完成，用户能正常看到首页吗？」
+/// - **不能** → 放 critical（谨慎，每多一个都拖慢启动）
+/// - **能**  → 放 deferred（绝大多数情况）
+///
+/// ## 当前任务清单
+///
+/// | 阶段 | 任务 | 说明 |
+/// |---|---|---|
+/// | Critical | NetworkMonitor | 后续 HTTP、WebSocket 都依赖网络状态 |
+/// | Deferred | （待扩展） | 推送注册、登录态恢复、缓存预热等 |
+final appInitializerProvider = Provider<AppInitializer>((ref) {
+  return AppInitializer(
+    onLog: (message, {tag}) {
+      // ignore: avoid_print
+      print('[${tag ?? 'AppInit'}] $message');
+    },
+    critical: [
+      // 网络监听必须最先就绪（后续 HTTP、WebSocket 都依赖它）
+      InitTask(
+        name: 'NetworkMonitor',
+        task: () => ref.read(networkMonitorProvider).initialize(),
+      ),
+    ],
+    deferred: [
+      // TODO: 推送注册
+      // InitTask(
+      //   name: 'PushNotification',
+      //   task: () => ref.read(pushServiceProvider).register(),
+      // ),
+      //
+      // TODO: 登录态恢复（从安全存储读取 token → 自动登录）
+      // InitTask(
+      //   name: 'AuthRestore',
+      //   task: () => ref.read(authRestoreUseCaseProvider).execute(),
+      // ),
+      //
+      // TODO: 缓存预热
+      // InitTask(
+      //   name: 'CacheWarmup',
+      //   task: () => ref.read(cacheServiceProvider).warmup(),
+      // ),
+    ],
+  );
+});

apps/im_app/lib/app/di/db_provider.dart

@@ -0,0 +1,24 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:storage_sdk/storage_sdk.dart';
+
+import '../../data/local/drift/app_database.dart';
+
+/// 全局单例 StorageSdkApi，整个 App 生命周期内唯一实例。
+///
+/// storage_sdk 负责数据库连接生命周期和 CRUD 机制；
+/// im_app 负责 schema（AppDatabase + 各业务表）。
+///
+/// 用法：
+/// ```dart
+/// // 登录后开库
+/// await ref.read(storageSdkProvider).openDatabase(user.id);
+///
+/// // CRUD 示例
+/// final db = ref.read(storageSdkProvider);
+/// await db.insertOrReplace(appDb.users, companion);
+/// ```
+final storageSdkProvider = Provider<StorageSdkApi>((ref) {
+  return StorageSdkApi(
+    databaseFactory: (executor) => AppDatabase(executor),
+  );
+});

apps/im_app/lib/app/di/network_provider.dart

@@ -0,0 +1,404 @@
+import 'dart:async';
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:networks_sdk/networks_sdk.dart';
+
+import '../../core/foundation/api_paths.dart';
+import '../../core/foundation/config.dart';
+import '../../core/foundation/constants.dart';
+import '../../core/services/network_monitor.dart';
+import '../../core/services/socket_manager.dart';
+
+// ── 网络状态监听 ──────────────────────────────────────────────────────────────
+
+/// 网络状态监听 Provider（全局单例）
+///
+/// 基于 connectivity_plus 监听平台网络变化，
+/// 作为公共服务供多个模块使用：
+/// - SocketManager：网络变化时自动断连/重连 WebSocket
+/// - HTTP 层：请求前检查网络可用性
+/// - UI 层：显示网络状态提示
+///
+/// ## 使用
+///
+/// ```dart
+/// // 查询当前状态
+/// final isConnected = ref.read(networkMonitorProvider).isConnected;
+///
+/// // 监听状态变化
+/// ref.listen(networkMonitorProvider, (prev, monitor) {
+///   monitor.onStatusChanged.listen((isAvailable) {
+///     // 处理网络变化
+///   });
+/// });
+/// ```
+final networkMonitorProvider = Provider<NetworkMonitor>((ref) {
+  final monitor = NetworkMonitor(
+    onLog: (message, {tag}) {
+      // ignore: avoid_print
+      print('[${tag ?? 'Network'}] $message');
+    },
+  );
+
+  ref.onDispose(() {
+    monitor.dispose();
+  });
+
+  return monitor;
+});
+
+// ── HTTP 基础设施 ─────────────────────────────────────────────────────────────
+
+/// API 配置 Provider（全局单例）
+///
+/// 从 [AppConfig.apiBaseUrl]（config.json → --dart-define-from-file）读取 baseURL，
+/// 注入到 Network SDK 作为所有 HTTP 请求的基础 URL。
+///
+/// [onCheckNetworkAvailable] 由 [networkMonitorProvider]（公共服务）注入，
+/// 请求前先判断网络状态，无网络时直接抛 [ApiError.noNetworkConnection]。
+final apiConfigProvider = Provider<ApiConfig>((ref) {
+  final networkMonitor = ref.read(networkMonitorProvider);
+
+  return ApiConfig(
+    baseURL: AppConfig.apiBaseUrl,
+    platformHeaders: {
+      'Platform': 'Android', // TODO: 运行时从平台 API 获取
+      'client-version': '1.0.0', // TODO: 运行时从 package_info 获取
+    },
+    tokenExpiredCodes: {30002, 30003, 30124},
+    forceLogoutCodes: {30125},
+    onForceLogout: () {
+      // TODO: 清除登录态，跳转登录页
+    },
+    onTokenRefresh: () async {
+      // TODO: App 层刷新 token 逻辑
+      return null;
+    },
+    onCheckNetworkAvailable: () async => networkMonitor.isConnected,
+    maxRetries: AppConstants.maxRetries,
+    retryBaseDelay: AppConstants.retryBaseDelay,
+    onLog: (message, {tag}) {
+      // ignore: avoid_print
+      print('[${tag ?? 'Network'}] $message');
+    },
+  );
+});
+
+/// API 客户端 Provider（全局单例）
+///
+/// 含拦截器（Auth / Retry / Logging）、超时配置。
+final networkSdkApiProvider = Provider<NetworksSdkApi>((ref) {
+  final config = ref.read(apiConfigProvider);
+  return NetworksSdkApi()..initialize(config);
+});
+
+// ── WebSocket 基础设施 ────────────────────────────────────────────────────────
+
+/// SocketConfig Provider（全局单例）
+///
+/// 与 apiConfigProvider 对称，通过回调注入 App 层能力，
+/// SDK 内部不调用其他 SDK。
+final socketConfigProvider = Provider<SocketConfig>((ref) {
+  final networkMonitor = ref.read(networkMonitorProvider);
+
+  return SocketConfig(
+    maxReconnectAttempts: AppConstants.maxRetries,
+    maxReconnectDelay: AppConstants.maxReconnectDelay,
+    onLog: (message, {tag}) {
+      // ignore: avoid_print
+      print('[${tag ?? 'Socket'}] $message');
+    },
+    onCheckNetworkAvailable: () async {
+      return networkMonitor.isConnected;
+    },
+  );
+});
+
+/// SocketClient Provider（全局单例）
+///
+/// 与 apiClientProvider 对称。
+final socketClientProvider = Provider<NetworksMessagingApi>((ref)
+{
+  final config = ref.read(socketConfigProvider);
+  return NetworksMessagingApi()..initialize(config);
+});
+
+/// SocketManager Provider
+///
+/// 封装连接生命周期、网络/前后台事件响应、操作前置检查、消息预处理。
+/// 业务模块通过此 Provider 访问 WebSocket 能力。
+///
+/// ## 前置检查
+///
+/// connect / send 前先检查网络可用性 + 后台状态，
+/// 无效操作直接跳过，避免无意义的网络请求。
+/// 与 HTTP 层 [ApiClient.executeRequest] 的网络前置检查对称。
+///
+/// ## 事件驱动
+///
+/// 网络状态变化由 [networkMonitorProvider]（公共服务）驱动，
+/// 自动触发断连/重连。
+///
+/// onMessageTransform 参考 HTTP 层 onTokenRefresh 的回调模式：
+/// 后续接入加解密 SDK 时，在此注入解密回调，
+/// SDK 内部不调用其他 SDK。
+final socketManagerProvider = Provider<SocketManager>((ref) {
+  final client = ref.read(socketClientProvider);
+  final networkMonitor = ref.read(networkMonitorProvider);
+
+  final manager = SocketManager(
+    client: client,
+    wsUrl: _buildWsUrl(AppConfig.apiBaseUrl),
+    onMessageTransform: null, // TODO: 接入加解密 SDK 后注入解密回调
+    onCheckNetworkAvailable: () async => networkMonitor.isConnected,
+    onLog: (message, {tag}) {
+      // ignore: avoid_print
+      print('[${tag ?? 'SocketManager'}] $message');
+    },
+  );
+
+  // 监听网络状态变化 → 驱动 SocketManager 断连/重连
+  final subscription = networkMonitor.onStatusChanged.listen((isAvailable) {
+    manager.handleNetworkStatusChanged(isAvailable: isAvailable);
+  });
+
+  ref.onDispose(() {
+    subscription.cancel();
+    unawaited(manager.dispose());
+  });
+
+  return manager;
+});
+
+// ── 辅助 ──────────────────────────────────────────────────────────────────────
+
+/// HTTP baseURL → WebSocket URL 转换
+///
+/// https://api.example.com → wss://api.example.com/ws
+/// http://api.example.com  → ws://api.example.com/ws
+String _buildWsUrl(String httpBaseUrl) {
+  String base = httpBaseUrl;
+  if (base.startsWith('https://')) {
+    base = base.replaceFirst('https://', 'wss://');
+  } else if (base.startsWith('http://')) {
+    base = base.replaceFirst('http://', 'ws://');
+  }
+  return '$base${ApiPaths.wsConnect}';
+}
+
+// ══════════════════════════════════════════════════════════════════════════════
+//  本文件的职责
+// ══════════════════════════════════════════════════════════════════════════════
+//
+//  提供所有网络基础设施 Provider：网络监听 + HTTP + WebSocket。
+//  业务模块的 DI 链路（Repository → UseCase 按需）
+//  内聚在 features/{模块}/di/{模块}_providers.dart 中。
+//
+//  di/ 目录只放「需要手动装配的 Provider」（构造注入、回调组合等）。
+//  ViewModel Provider 由 @riverpod 注解自动生成，不在 di/ 中。
+//
+//  ┌──────────────────────────────────────────────────────────────────────────┐
+//  │                         DI 架构                                         │
+//  ├──────────────────────────────────────────────────────────────────────────┤
+//  │  app/di/                         ← 手动装配：SDK 基础设施               │
+//  │  ├── app_providers.dart     → 主题 + 启动初始化                         │
+//  │  └── network_provider.dart  → 网络监听 + HTTP + WebSocket              │
+//  │                                                                         │
+//  │  features/{模块}/di/             ← 手动装配：业务模块 DI 链路           │
+//  │  └── auth_providers.dart    → Repository → UseCase（按需）              │
+//  │      chat_providers.dart       每个模块 DI 链路内聚在一个文件           │
+//  │                                                                         │
+//  │  features/{模块}/presentation/   ← @riverpod 自动生成：ViewModel        │
+//  │  └── login_view_model.dart  → loginViewModelProvider（代码生成）        │
+//  └──────────────────────────────────────────────────────────────────────────┘
+//
+//  Provider 链路：
+//
+//    networkMonitorProvider（公共服务，HTTP + WS 共用）
+//      ├── apiConfigProvider → apiClientProvider         ← HTTP 层
+//      └── socketConfigProvider → socketClientProvider   ← WS 层
+//            → socketManagerProvider
+//
+//  网络事件驱动链路：
+//
+//    connectivity_plus（平台网络事件）
+//      → NetworkMonitor.onStatusChanged（true / false）
+//        → SocketManager.handleNetworkStatusChanged()
+//          → 断网: disconnect()
+//          → 恢复: connect(token: lastToken)
+//
+//  前后台事件驱动链路：
+//
+//    WidgetsBindingObserver（App 层 app.dart）
+//      → SocketManager.onEnterBackground() → disconnect
+//      → SocketManager.onEnterForeground() → reconnect
+//
+//  Repository 直接注入 ApiClient，通过回调注入其他 SDK 能力：
+//
+//    onTokenUpdate: (token) {
+//      apiConfig.updateToken(token);       // 内存（network_sdk）
+//      secureStorage.saveToken(token);     // 持久化（crypto_sdk）
+//    }
+//
+//  这样 network_sdk 和 crypto_sdk 互不依赖，App 层是唯一知道两者的地方。
+//
+// ══════════════════════════════════════════════════════════════════════════════
+//  新增接口的完整流程（以登录为例）
+// ══════════════════════════════════════════════════════════════════════════════
+//
+//  「一个接口 = 一个 Request 文件」，严格按层调用，禁止跳层。
+//
+//  ┌──────────────────────────────────────────────────────────────────────────┐
+//  │                         文件 & 职责总览                                  │
+//  ├──────────────────────────────────────────────────────────────────────────┤
+//  │  login_request.dart        Request + Response DTO（一个端点一个文件）     │
+//  │  auth_repository_impl.dart executeRequest → DTO → Entity + 回调写 Token│
+//  │  login_usecase.dart        格式校验 → 调 Repository（按需，非必须）      │
+//  │  auth_providers.dart       DI 装配（Repository → UseCase 按需）          │
+//  │  login_view_model.dart     ref.read(authRepositoryProvider).login()     │
+//  │                            或 ref.read(loginUseCaseProvider).execute()  │
+//  │  login_page.dart           ref.watch(loginViewModelProvider)            │
+//  └──────────────────────────────────────────────────────────────────────────┘
+//
+// ─────────────────────────────────────────────────────────────────────────
+// Step 1: 定义 Request（data/remote/login_request.dart）
+// ─────────────────────────────────────────────────────────────────────────
+//
+//   一个文件包含两部分：Response DTO + Request 类。
+//
+//   @JsonSerializable()
+//   class LoginData {                               // Response DTO
+//     final String token;
+//     final String userId;
+//     factory LoginData.fromJson(Map<String, dynamic> json) => _$LoginDataFromJson(json);
+//     User toEntity() => User(id: userId, ...);     // DTO → Domain Entity
+//   }
+//
+//   @ApiRequest(path: ApiPaths.authLogin, method: HttpMethod.post,
+//       responseType: LoginData, requestType: ApiRequestType.login)
+//   @JsonSerializable()
+//   class LoginRequest extends ApiRequestable<LoginData> with _$LoginRequestApi {
+//     final String email;
+//     final String password;
+//     LoginRequest({required this.email, required this.password});
+//     @override Map<String, dynamic> toJson() => _$LoginRequestToJson(this);
+//   }
+//
+//   build_runner 生成 _$LoginRequestApi mixin → 自动提供 path / method / fromJson 注册。
+//
+// ─────────────────────────────────────────────────────────────────────────
+// Step 2: Repository（data/repositories/auth_repository_impl.dart）
+// ─────────────────────────────────────────────────────────────────────────
+//
+//   class AuthRepositoryImpl implements AuthRepository {
+//     final ApiClient _client;                        // ← 直接注入 ApiClient
+//     final void Function(String?) _onTokenUpdate;    // ← 回调，由 Provider 层组合
+//
+//     Future<User> login({required String email, required String password}) async {
+//       final dto = await _client.executeRequest(
+//         LoginRequest(email: email, password: password),
+//       );
+//       _onTokenUpdate(dto!.token);                   // 回调写入 Token
+//       return dto.toEntity();                        // DTO → Domain Entity
+//     }
+//   }
+//
+// ─────────────────────────────────────────────────────────────────────────
+// Step 3: Provider 装配 + ViewModel
+// ─────────────────────────────────────────────────────────────────────────
+//
+//   // --- Provider 装配（features/auth/di/auth_providers.dart） ---
+//
+//   // Repository（直接注入 ApiClient + 回调组合多个 SDK 能力）
+//   final authRepositoryProvider = Provider((ref) {
+//     final apiConfig = ref.read(apiConfigProvider);
+//     return AuthRepositoryImpl(
+//       client: ref.read(apiClientProvider),       // 直接注入
+//       onTokenUpdate: (token) {
+//         apiConfig.updateToken(token);             // 内存（network_sdk）
+//         // secureStorage.saveToken(token);        // 持久化（crypto_sdk）
+//       },
+//     );
+//   });
+//
+//   // UseCase（按需 — 登录有多步编排，所以需要）
+//   final loginUseCaseProvider = Provider((ref) {
+//     return LoginUseCase(authRepository: ref.read(authRepositoryProvider));
+//   });
+//
+//   // --- ViewModel（features/auth/presentation/login_view_model.dart） ---
+//
+//   // 常规写法：ViewModel 直接调 Repository
+//   @riverpod
+//   class LoginViewModel extends _$LoginViewModel {
+//     Future<void> login(String email, String password) async {
+//       state = state.copyWith(isLoading: true);
+//       try {
+//         final user = await ref.read(authRepositoryProvider).login(
+//           email: email, password: password,
+//         );
+//         state = state.copyWith(user: user, isLoading: false);
+//       } on ApiError catch (e) {
+//         state = state.copyWith(error: e.displayMessage, isLoading: false);
+//       }
+//     }
+//   }
+//
+//   // 进阶写法：有 UseCase 时（格式校验 + 多步编排）
+//   // final user = await ref.read(loginUseCaseProvider).execute(
+//   //   email: email, password: password,
+//   // );
+//
+// ═════════════════════════════════════════════════════════════════════════
+//  内部执行链路（点击登录按钮后发生了什么）
+// ═════════════════════════════════════════════════════════════════════════
+//
+//   View: vm.login(email, password)
+//     → ViewModel: ref.read(authRepositoryProvider).login(...)    ← 常规路径
+//     → ViewModel: ref.read(loginUseCaseProvider).execute(...)    ← 进阶路径（有 UseCase 时）
+//       → UseCase: 格式校验（邮箱 + 密码）
+//       → UseCase/ViewModel: authRepository.login(...)
+//         → Repository: _client.executeRequest(LoginRequest(...))
+//           → ApiClient.executeRequest(request)
+//               1. 拼 URL: baseURL + "/auth/login"
+//               2. request.parameters 触发 fromJson 自动注册
+//               3. AuthInterceptor: 注入 token + platform headers
+//               4. Dio.request(url, data: {email, password})
+//               5. RetryInterceptor: token 过期 → 刷新 → 自动重试
+//               6. LoggingInterceptor: 打印请求/响应日志
+//             → request.decodeResponse(response)
+//               1. ApiResponseWrapper.fromJson: 拆 { code, message, data }
+//               2. 检查 code != 0 → 抛 ApiError
+//               3. fromJsonRegistry[LoginData] → LoginData.fromJson(data)
+//             → 返回 LoginData（DTO）
+//         → _onTokenUpdate(token)  回调写入 Token（Provider 层组合：内存 + 持久化）
+//         → LoginData.toEntity() → User（Domain Entity）
+//     → state.copyWith(user: user)  更新状态
+//   View: ref.watch → 自动 rebuild UI
+//
+// ═════════════════════════════════════════════════════════════════════════
+//  各 HTTP 方法速查 — 新增接口时参照
+// ═════════════════════════════════════════════════════════════════════════
+//
+//  GET（参数走 URL query string）
+//    @ApiRequest(path: ..., method: HttpMethod.get, responseType: ProfileData)
+//    class GetProfileRequest extends ApiRequestable<ProfileData> with _$... { }
+//
+//  POST（参数走 JSON body）
+//    见上方 LoginRequest 示例。
+//
+//  DELETE / PUT / PATCH（与 POST 相同，只改 method）
+//    @ApiRequest(path: ..., method: HttpMethod.delete, responseType: ...)
+//
+//  POST 无响应数据（如 logout）
+//    class LogoutRequest extends ApiRequestable<void> { ... }
+//    // → 返回 null
+//
+//  Upload A: FormData 上传到自有后端
+//    @override Object? get uploadData => FormData.fromMap({ 'file': ... });
+//
+//  Upload B: 二进制上传到 S3 presigned URL
+//    @override String get path => presignedURL;    // 完整 URL，不拼 baseURL
+//    @override Object? get uploadData => bytes;    // Uint8List
+//    @override decodeResponse(response) { ... }    // S3 不走标准信封
+//

apps/im_app/lib/app/router/app_route_name.dart

@@ -0,0 +1,97 @@
+/// 应用路由枚举
+///
+/// 每个枚举值对应一个注册路由及其绝对路径。
+///
+/// ## 为什么用枚举而不是常量类
+///
+/// `auth_guard.dart` 对路由做 switch 分析，Dart 的枚举 switch 是穷举的：
+/// 新增路由时若没在 switch 里补 case，编译器直接报错，而不是等运行时漏掉。
+///
+/// ## 使用方式
+///
+/// ```dart
+/// // 无参数导航
+/// context.push(AppRouteName.settingsTheme.path);
+/// context.go(AppRouteName.chat.path);
+///
+/// // 带参数导航（extra 传对象，适合列表点入详情等已有数据的场景）
+/// context.push(
+///   AppRouteName.chatDetail.path,
+///   extra: (conversationId: '42', title: '技术支持'),
+/// );
+///
+/// // 带路径参数导航（路径中内嵌 id，适合需要直接链接或分享的场景）
+/// context.push(AppRouteName.chatDetailByIdPath('99'));
+///
+/// // 路由表定义
+/// GoRoute(path: AppRouteName.chat.path, ...)
+/// ```
+///
+/// ## 注意：子路由 path 是相对路径片段
+///
+/// go_router 在子路由中使用相对路径片段（不含父路径前缀），
+/// 这是框架规定，不是硬编码字符串：
+/// ```dart
+/// GoRoute(
+///   path: AppRouteName.settings.path,  // '/settings'
+///   routes: [
+///     GoRoute(path: AppRouteName.settingsTheme.segment, ...),  // 'theme'
+///   ],
+/// )
+/// ```
+/// 导航时仍用 `AppRouteName.settingsTheme.path`，与枚举保持一致。
+///
+/// 子路由声明使用 [segment]（相对路径片段），避免在路由表中硬编码字符串：
+/// ```dart
+/// GoRoute(path: AppRouteName.settingsTheme.segment, ...) // 'theme'
+/// ```
+///
+/// ## 注意：含路径参数的路由
+///
+/// [chatDetailById] 的 [path] 包含占位符 `:id`，不能直接用于导航。
+/// 导航时使用 [chatDetailByIdPath] 传入实际 id：
+/// ```dart
+/// context.push(AppRouteName.chatDetailByIdPath('99'));
+/// ```
+enum AppRouteName {
+  // ── Tab 根路由 ────────────────────────────────────────────────────────────
+  chat('/chat'),
+  contact('/contact'),
+  settings('/settings'),
+
+  // ── Chat 子路由 ──────────────────────────────────────────────────────────
+  // extra: ({String conversationId, String title})
+  chatDetail('/chat/detail'),
+  // 路径参数形式：导航用 AppRouteName.chatDetailByIdPath(id)，不直接用 .path
+  chatDetailById('/chat/:id'),
+
+  // ── Settings 子路由 ───────────────────────────────────────────────────────
+  settingsTheme('/settings/theme'),
+
+  // ── 全屏页面（无底部导航栏）──────────────────────────────────────────────
+  login('/login');
+
+  const AppRouteName(this.path);
+
+  /// 绝对路径，用于 [context.push] / [context.go] 导航及顶层路由表声明
+  ///
+  /// 注意：[chatDetailById] 的 path 含占位符 `:id`，导航时用 [chatDetailByIdPath]。
+  final String path;
+
+  /// 相对路径片段（path 的最后一段），用于 go_router 子路由的 [GoRoute.path] 声明
+  ///
+  /// 例：`AppRouteName.settingsTheme.segment` → `'theme'`
+  String get segment => path.split('/').last;
+
+  /// 从绝对路径查找枚举值，路径未注册时返回 null
+  ///
+  /// 注意：含路径参数的路由（如 `/chat/99`）无法匹配，返回 null，
+  /// auth_guard 会按受保护路由处理（未登录重定向到登录页）。
+  static AppRouteName? fromPath(String path) =>
+      AppRouteName.values.where((r) => r.path == path).firstOrNull;
+
+  /// 生成 [chatDetailById] 的实际导航路径，将 `:id` 替换为真实 id
+  ///
+  /// 例：`AppRouteName.chatDetailByIdPath('99')` → `'/chat/99'`
+  static String chatDetailByIdPath(String id) => '/chat/$id';
+}

apps/im_app/lib/app/router/app_router.dart

@@ -0,0 +1,154 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+
+import '../../features/app_tab/view/app_tab.dart';
+import '../../features/chat/view/chat_detail_page.dart';
+import '../../features/chat/view/chat_page.dart';
+import '../../features/contact/view/contact_page.dart';
+import '../../features/login/view/login_page.dart';
+import '../../features/settings/view/settings_page.dart';
+import '../../features/settings/view/theme_view.dart';
+import '../di/app_providers.dart';
+import 'app_route_name.dart';
+import 'guards/auth_guard.dart';
+
+/// 应用路由 Provider
+///
+/// 路由结构：
+/// ```
+/// StatefulShellRoute（底部导航栏持久容器）
+///   ├── /chat               ChatPage
+///   ├── /contact            ContactPage
+///   └── /settings           SettingsPage
+///
+/// ── 全屏页面（无底部导航栏，parentNavigatorKey = _rootKey）──
+/// /chat/detail              ChatDetailPage（extra 传参）
+/// /chat/:id                 ChatDetailPage（路径参数）
+/// /settings/theme           ThemeView
+/// /login                    LoginPage
+/// ```
+///
+/// ## Shell 内 vs Shell 外
+///
+/// Shell 内路由（Tab 根路由）始终显示底部导航栏。
+/// Shell 外路由（详情页 / 子功能页）无底部导航栏，push 进入后有返回按钮。
+/// 这与 iOS / Android 主流 IM App 的交互一致（会话详情、设置子页均全屏）。
+///
+/// ## parentNavigatorKey 的作用
+///
+/// go_router push 时，路由默认放到"最近的 Navigator 祖先"上。
+/// 在 StatefulShellBranch 内 push，最近的 Navigator 是 Branch Navigator，
+/// 而不是 Root Navigator，Shell 不会被盖住，TabBar 仍然可见。
+///
+/// 设置 `parentNavigatorKey: _rootKey` 后，路由强制放到 Root Navigator，
+/// 盖住整个 Shell，TabBar 消失，表现为真正的全屏页面。
+///
+/// ## 登录守卫
+///
+/// [authGuard] 检查 [AuthNotifier.isLoggedIn]，未登录时重定向到 /login。
+/// 登录 / 退出后 [AuthNotifier.notifyListeners] 触发 [refreshListenable]，
+/// go_router 自动重新执行 redirect，无需手动跳转。
+///
+/// ## Tab 状态保持
+///
+/// [StatefulShellRoute.indexedStack] 为每个 Tab 维护独立的 Navigator 栈，
+/// 切换 Tab 时页面状态（滚动位置、输入内容等）不丢失。
+
+// Root Navigator Key：供全屏路由声明 parentNavigatorKey，确保覆盖整个 Shell
+final _rootKey = GlobalKey<NavigatorState>();
+
+final routerProvider = Provider<GoRouter>((ref) {
+  final authNotifier = ref.read(authNotifierProvider);
+
+  return GoRouter(
+    // Root Navigator 的 Key，供全屏路由声明 parentNavigatorKey 使用，
+    // 确保 push 时覆盖整个 Shell（包括 TabBar）
+    navigatorKey: _rootKey,
+
+    // 冷启动默认落地页；authGuard 会在进入前检查登录状态并按需重定向
+    initialLocation: AppRouteName.chat.path,
+
+    // 在控制台打印每次路由变化，方便开发期间调试；上线前设为 false
+    debugLogDiagnostics: true,
+
+    // 监听 authNotifier 变化：登录 / 退出时自动触发 redirect 重新执行，
+    // 无需在业务代码里手动 context.go，守卫统一负责跳转
+    refreshListenable: authNotifier,
+
+    redirect: (context, state) => authGuard(authNotifier, state),
+    routes: [
+      // ── Shell 内：底部导航栏始终可见 ─────────────────────────────────────
+      StatefulShellRoute.indexedStack(
+        builder: (context, state, navigationShell) {
+          return AppTab(navigationShell: navigationShell);
+        },
+        branches: [
+          StatefulShellBranch(
+            routes: [
+              GoRoute(
+                path: AppRouteName.chat.path,
+                builder: (context, state) => const ChatPage(),
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            routes: [
+              GoRoute(
+                path: AppRouteName.contact.path,
+                builder: (context, state) => const ContactPage(),
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            routes: [
+              GoRoute(
+                path: AppRouteName.settings.path,
+                builder: (context, state) => const SettingsPage(),
+              ),
+            ],
+          ),
+        ],
+      ),
+
+      // ── Shell 外：全屏页面，无底部导航栏 ─────────────────────────────────
+      // parentNavigatorKey: _rootKey 确保路由覆盖 Shell，TabBar 消失
+      //
+      // extra 传参：接收 ({String conversationId, String title})
+      GoRoute(
+        parentNavigatorKey: _rootKey,
+        path: AppRouteName.chatDetail.path,
+        builder: (context, state) {
+          final extra =
+              state.extra as ({String conversationId, String title});
+          return ChatDetailPage(
+            conversationId: extra.conversationId,
+            title: extra.title,
+          );
+        },
+      ),
+      // 路径参数：id 内嵌在 URL 中（/chat/:id）
+      GoRoute(
+        parentNavigatorKey: _rootKey,
+        path: AppRouteName.chatDetailById.path,
+        builder: (context, state) {
+          final id = state.pathParameters['id']!;
+          return ChatDetailPage(
+            conversationId: id,
+            title: '路径参数详情',
+          );
+        },
+      ),
+      GoRoute(
+        parentNavigatorKey: _rootKey,
+        path: AppRouteName.settingsTheme.path,
+        builder: (context, state) => const ThemeView(),
+      ),
+      GoRoute(
+        parentNavigatorKey: _rootKey,
+        path: AppRouteName.login.path,
+        builder: (context, state) => const LoginPage(),
+      ),
+    ],
+  );
+});

apps/im_app/lib/app/router/guards/auth_guard.dart

@@ -0,0 +1,47 @@
+import 'package:go_router/go_router.dart';
+
+import '../../di/app_providers.dart';
+import '../app_route_name.dart';
+
+/// 登录守卫
+///
+/// 在 [GoRouter.redirect] 中调用，返回 null 表示放行，返回路径表示重定向目标。
+/// 接收 [AuthNotifier] 而非 [Ref]，避免守卫内部依赖 Riverpod，便于单测。
+///
+/// ## 穷举保护
+///
+/// 使用 [AppRouteName] 枚举 + switch 分析路由权限，Dart 编译器保证穷举：
+/// 在 [AppRouteName] 新增枚举值后，此处 switch 未补 case 则编译报错。
+///
+/// ## 路由权限规则
+///
+/// | 路由 | 未登录 | 已登录 |
+/// |------|--------|--------|
+/// | login | 放行 | 重定向 → chat |
+/// | 其余 | 重定向 → login | 放行 |
+///
+/// ## storage_sdk 接入后
+///
+/// 将 [AuthNotifier] 内的 Demo 状态替换为持久化 token，守卫本身无需改动。
+String? authGuard(AuthNotifier authNotifier, GoRouterState state) {
+  final isLoggedIn = authNotifier.isLoggedIn;
+  final route = AppRouteName.fromPath(state.matchedLocation);
+
+  // 路径不在枚举中（理论上不应出现）→ 按受保护处理
+  if (route == null) return isLoggedIn ? null : AppRouteName.login.path;
+
+  switch (route) {
+    case AppRouteName.login:
+      // 已登录还在登录页 → 跳聊天页
+      return isLoggedIn ? AppRouteName.chat.path : null;
+
+    case AppRouteName.chat:
+    case AppRouteName.chatDetail:
+    case AppRouteName.chatDetailById:
+    case AppRouteName.contact:
+    case AppRouteName.settings:
+    case AppRouteName.settingsTheme:
+      // 受保护路由 → 未登录跳登录页
+      return isLoggedIn ? null : AppRouteName.login.path;
+  }
+}

apps/im_app/lib/core/foundation/api_paths.dart

@@ -0,0 +1,31 @@
+/// API 路径常量 — 全局统一管理
+///
+/// 所有 HTTP 接口路径在此定义，`@ApiRequest(path: ApiPaths.xxx)` 引用。
+/// 集中管理便于：搜索、重命名、接口迁移、后端对齐。
+///
+/// 命名规则：`模块_操作`，如 `authLogin`、`chatSendMessage`。
+///
+/// 新增路径时，先 Cmd+F 搜索路径值，确认不重复后再添加。
+// ignore: avoid_classes_with_only_static_members
+class ApiPaths {
+  ApiPaths._();
+
+  // ── Auth ──
+  static const authLogin = '/auth/login';
+  static const authRefreshToken = '/auth/refresh-token';
+  static const authLogout = '/auth/logout';
+
+  // ── User ──
+  static const userProfile = '/user/profile';
+  static const userUpdateProfile = '/user/update-profile';
+
+  // ── Chat ──
+  static const chatSendMessage = '/chat/send-message';
+  static const chatHistory = '/chat/history';
+
+  // ── Upload ──
+  static const uploadFile = '/upload/file';
+
+  // ── WebSocket ──
+  static const wsConnect = '/ws';
+}

apps/im_app/lib/core/foundation/config.dart

@@ -0,0 +1,14 @@
+// 编译期从 --dart-define-from-file=config/config.json 注入
+// CI 打包时脚本修改 config.json 写入线上值，本地开发保持默认（IS_DEV=true）
+// ignore: avoid_classes_with_only_static_members
+class AppConfig {
+  AppConfig._();
+
+  static const isDev = bool.fromEnvironment('IS_DEV', defaultValue: true);
+  static const apiBaseUrl = String.fromEnvironment(
+    'API_BASE_URL',
+    defaultValue: 'https://dev-api.example.com',
+  );
+
+  static bool get isProd => !isDev;
+}

apps/im_app/lib/core/foundation/constants.dart

@@ -0,0 +1,17 @@
+/// 全局常量
+///
+/// 跨模块共用的配置值集中管理，避免散落在各处导致不一致。
+class AppConstants {
+  AppConstants._();
+
+  // ── 网络重试 ──
+
+  /// 最大重试次数（HTTP 瞬态错误 + WebSocket 重连 统一）
+  static const maxRetries = 3;
+
+  /// 重试基础延迟（指数退避起点）
+  static const retryBaseDelay = Duration(seconds: 1);
+
+  /// 重连最大延迟（指数退避上限）
+  static const maxReconnectDelay = Duration(seconds: 30);
+}

apps/im_app/lib/core/services/app_initializer.dart

@@ -0,0 +1,147 @@
+import 'package:flutter/widgets.dart';
+
+/// App 启动初始化器
+///
+/// 两阶段串行队列，确保启动流畅、资源不竞争。
+///
+/// ## 为什么不能在 initState 里一股脑 await？
+///
+/// 初始化任务并发执行会导致：
+/// - 多个 await 阻塞首帧渲染 → 白屏时间长
+/// - 任务间资源竞争（网络、IO、CPU）→ 互相拖慢
+/// - 一个任务失败可能阻塞后续所有任务
+///
+/// ## 解决方案：两阶段 + 串行队列
+///
+/// ```
+/// App 启动
+///   │
+///   ├── Phase 1: Critical（initState 中同步触发）
+///   │   串行执行，必须在用户交互前完成。
+///   │   只放真正阻塞用户操作的任务（尽量少）。
+///   │   例：网络监听（后续所有网络操作依赖它）
+///   │
+///   ├── 首帧渲染（用户看到 UI）
+///   │
+///   └── Phase 2: Deferred（addPostFrameCallback 触发）
+///       串行执行，首帧渲染后逐个跑。
+///       不争抢资源，不影响 UI 流畅度。
+///       例：推送注册、缓存预热、埋点 SDK 初始化
+/// ```
+///
+/// ## 添加新任务的规则
+///
+/// 问自己：「这个任务不完成，用户能正常看到首页吗？」
+/// - **能** → 放 deferred（绝大多数情况）
+/// - **不能** → 放 critical（谨慎添加，每多一个都会拖慢启动）
+///
+/// ## 设计原则
+///
+/// - **串行不并发**：同阶段内任务按顺序逐个执行，避免资源竞争
+/// - **隔离不传染**：每个任务独立 try-catch，一个失败不阻塞后续
+/// - **可观测**：每个任务计时 + 日志，方便排查启动瓶颈
+/// - **首帧优先**：deferred 阶段等首帧渲染完再开始
+class AppInitializer {
+  /// 关键任务（首帧前串行执行）
+  final List<InitTask> critical;
+
+  /// 延迟任务（首帧后串行执行）
+  final List<InitTask> deferred;
+
+  /// 日志回调
+  final void Function(String message, {String? tag})? onLog;
+
+  const AppInitializer({
+    this.critical = const [],
+    this.deferred = const [],
+    this.onLog,
+  });
+
+  /// 启动初始化
+  ///
+  /// 1. 立即串行执行 critical 任务
+  /// 2. 注册 addPostFrameCallback，首帧后串行执行 deferred 任务
+  ///
+  /// 在 initState 中调用（fire-and-forget，不 await）。
+  void run() {
+    _runCritical();
+  }
+
+  /// 执行关键阶段
+  Future<void> _runCritical() async {
+    if (critical.isEmpty) {
+      _log('No critical tasks');
+    } else {
+      _log('── Critical phase: ${critical.length} task(s) ──');
+      final totalSw = Stopwatch()..start();
+
+      await _runTasksSequentially(critical);
+
+      totalSw.stop();
+      _log('── Critical phase done in ${totalSw.elapsedMilliseconds}ms ──');
+    }
+
+    // 关键阶段完成后，注册首帧回调执行延迟阶段
+    _scheduleDeferredPhase();
+  }
+
+  /// 注册 addPostFrameCallback
+  ///
+  /// 需要在 critical 完成后再注册，确保顺序：
+  /// critical 完成 → 首帧渲染 → deferred 开始
+  void _scheduleDeferredPhase() {
+    if (deferred.isEmpty) return;
+
+    WidgetsBinding.instance.addPostFrameCallback((_) => _runDeferred());
+  }
+
+  /// 执行延迟阶段
+  Future<void> _runDeferred() async {
+    _log('── Deferred phase: ${deferred.length} task(s) ──');
+    final totalSw = Stopwatch()..start();
+
+    await _runTasksSequentially(deferred);
+
+    totalSw.stop();
+    _log('── Deferred phase done in ${totalSw.elapsedMilliseconds}ms ──');
+  }
+
+  /// 串行执行任务队列
+  ///
+  /// 逐个 await，不并发。每个任务独立 try-catch + 计时。
+  Future<void> _runTasksSequentially(List<InitTask> tasks) async {
+    for (var i = 0; i < tasks.length; i++) {
+      final task = tasks[i];
+      final sw = Stopwatch()..start();
+
+      try {
+        _log('[${i + 1}/${tasks.length}] ${task.name} ...');
+        await task.task();
+        sw.stop();
+        _log('[${i + 1}/${tasks.length}] ${task.name} done (${sw.elapsedMilliseconds}ms)');
+      } catch (e) {
+        sw.stop();
+        _log('[${i + 1}/${tasks.length}] ${task.name} FAILED (${sw.elapsedMilliseconds}ms): $e');
+        // 不 rethrow — 隔离失败，继续执行后续任务
+      }
+    }
+  }
+
+  void _log(String message) {
+    onLog?.call(message, tag: 'AppInit');
+  }
+}
+
+/// 初始化任务
+class InitTask {
+  /// 任务名称（用于日志）
+  final String name;
+
+  /// 任务执行体
+  final Future<void> Function() task;
+
+  const InitTask({
+    required this.name,
+    required this.task,
+  });
+}

apps/im_app/lib/core/services/network_backoff_debouncer.dart

@@ -0,0 +1,105 @@
+import 'dart:async';
+import 'dart:math';
+
+/// 网络恢复退避防抖器
+///
+/// 网络状态频繁切换（WiFi 不稳定、隧道信号间断等）时，
+/// 避免每次恢复都立即重连，用指数退避控制重连频率。
+///
+/// 增加 jitter 防止多设备同时重连的群体效应（thundering herd）。
+///
+/// ## 退避策略
+///
+/// - 首次触发 → 等 baseDelay 后执行
+/// - 短时间内再次触发 → 延迟翻倍（指数退避）
+/// - 长时间静默后触发 → 重置为 baseDelay（网络已稳定）
+///
+/// ## 退避进程（默认参数）
+///
+/// ```
+/// 触发 1 → 4s 后执行
+/// 触发 2 → 8s 后执行
+/// 触发 3 → 16s 后执行
+/// 触发 4 → 32s 后执行
+/// 触发 5 → 60s（封顶）
+/// ...静默超过 2 分钟...
+/// 触发 N → 4s（重置）
+/// ```
+///
+/// ## 使用
+///
+/// ```dart
+/// final debouncer = NetworkBackoffDebouncer();
+///
+/// // 网络恢复事件
+/// debouncer.call(() {
+///   socketManager.reconnect();
+/// });
+/// ```
+class NetworkBackoffDebouncer {
+  /// 初始延迟
+  final Duration baseDelay;
+
+  /// 退避上限
+  final Duration maxDelay;
+
+  /// 静默多久后重置为初始延迟（网络已稳定，不再退避）
+  final Duration resetThreshold;
+
+  /// 退避倍数
+  final double factor;
+
+  Duration _currentDelay;
+  DateTime? _lastTriggerTime;
+  Timer? _timer;
+  final _random = Random();
+
+  NetworkBackoffDebouncer({
+    this.baseDelay = const Duration(seconds: 4),
+    this.maxDelay = const Duration(seconds: 60),
+    this.resetThreshold = const Duration(minutes: 2),
+    this.factor = 2.0,
+  }) : _currentDelay = baseDelay;
+
+  /// 触发退避执行
+  ///
+  /// 取消上一个待执行的 action，按当前退避延迟重新计时。
+  /// 短时间内多次触发只执行最后一次，延迟逐步递增。
+  void call(void Function() action) {
+    final now = DateTime.now();
+
+    if (_lastTriggerTime == null ||
+        now.difference(_lastTriggerTime!) > resetThreshold) {
+      // 首次触发 or 长时间静默 → 重置
+      _currentDelay = baseDelay;
+    } else {
+      // 短时间内再次触发 → 退避
+      final nextMs = (_currentDelay.inMilliseconds * factor).toInt();
+      _currentDelay = Duration(
+        milliseconds: nextMs < maxDelay.inMilliseconds
+            ? nextMs
+            : maxDelay.inMilliseconds,
+      );
+    }
+
+    _lastTriggerTime = now;
+
+    // 加 jitter（+0~25%），防止多设备同时重连
+    final jitterMs = _random.nextInt((_currentDelay.inMilliseconds * 0.25).toInt().clamp(1, 15000));
+    final delayWithJitter = _currentDelay + Duration(milliseconds: jitterMs);
+
+    _timer?.cancel();
+    _timer = Timer(delayWithJitter, action);
+  }
+
+  /// 取消待执行的 action
+  void cancel() {
+    _timer?.cancel();
+    _timer = null;
+  }
+
+  /// 释放资源
+  void dispose() {
+    cancel();
+  }
+}

apps/im_app/lib/core/services/network_monitor.dart

@@ -0,0 +1,110 @@
+import 'dart:async';
+
+import 'package:connectivity_plus/connectivity_plus.dart';
+
+/// 网络状态监听
+///
+/// 基于 connectivity_plus 监听平台网络变化，
+/// 提供 [isConnected] 查询和 [onStatusChanged] 事件流。
+///
+/// 非单例，由 Riverpod Provider 构造注入。
+///
+/// ## 数据流位置
+///
+/// ```
+/// connectivity_plus（平台网络事件）
+///   → ★ NetworkMonitor ★                ← 你在这里
+///     → SocketManager.handleNetworkStatusChanged()
+///       → SocketClient.connect / disconnect
+/// ```
+///
+/// ## 使用
+///
+/// ```dart
+/// final monitor = ref.read(networkMonitorProvider);
+/// monitor.onStatusChanged.listen((isAvailable) {
+///   // 网络状态变化
+/// });
+/// ```
+class NetworkMonitor {
+  final Connectivity _connectivity = Connectivity();
+  StreamSubscription<List<ConnectivityResult>>? _subscription;
+
+  List<ConnectivityResult> _results = [];
+
+  final _statusController = StreamController<bool>.broadcast();
+
+  /// 日志输出回调
+  final void Function(String message, {String? tag})? onLog;
+
+  NetworkMonitor({this.onLog});
+
+  /// 当前是否有网络连接
+  ///
+  /// 排除无连接和仅蓝牙连接的情况。
+  bool get isConnected {
+    if (_results.isEmpty) return false;
+    return !_results.contains(ConnectivityResult.none) &&
+        !_results.every((r) => r == ConnectivityResult.bluetooth);
+  }
+
+  /// 网络状态变化流
+  ///
+  /// 只在连接状态真正改变时发送事件（connected ↔ disconnected），
+  /// 同类型切换（WiFi → 4G）不会触发。
+  Stream<bool> get onStatusChanged => _statusController.stream;
+
+  /// 初始化监听
+  ///
+  /// App 启动时调用一次。获取当前状态并开始监听变化。
+  Future<void> initialize() async {
+    try {
+      _results = await _connectivity.checkConnectivity();
+      _log('Network status: $_connectionDescription');
+    } catch (e) {
+      _log('Failed to check connectivity: $e');
+      _results = [ConnectivityResult.none];
+    }
+
+    _subscription = _connectivity.onConnectivityChanged.listen(
+      _onChanged,
+      onError: (Object error) {
+        _log('Connectivity listener error: $error');
+      },
+    );
+  }
+
+  /// 释放资源
+  void dispose() {
+    _subscription?.cancel();
+    _statusController.close();
+  }
+
+  // ── 内部 ──────────────────────────────────────────────────────────────────
+
+  void _onChanged(List<ConnectivityResult> results) {
+    final wasConnected = isConnected;
+    _results = results;
+    final nowConnected = isConnected;
+
+    _log('Network changed: $_connectionDescription');
+
+    // 只在真正切换时通知
+    if (wasConnected != nowConnected) {
+      _statusController.add(nowConnected);
+      _log(nowConnected ? 'Network restored' : 'Network lost');
+    }
+  }
+
+  String get _connectionDescription {
+    if (_results.contains(ConnectivityResult.wifi)) return 'WiFi';
+    if (_results.contains(ConnectivityResult.mobile)) return 'Mobile';
+    if (_results.contains(ConnectivityResult.ethernet)) return 'Ethernet';
+    if (_results.contains(ConnectivityResult.none)) return 'None';
+    return 'Unknown';
+  }
+
+  void _log(String message) {
+    onLog?.call(message, tag: 'Network');
+  }
+}

apps/im_app/lib/core/services/socket_manager.dart

@@ -0,0 +1,376 @@
+import 'dart:async';
+
+
+import 'package:networks_sdk/networks_sdk.dart';
+
+import 'network_backoff_debouncer.dart';
+
+/// 消息预处理回调
+///
+/// 参考 HTTP 层 onTokenRefresh 的回调注入模式。
+/// App 层在 Provider 装配时注入解密/解析逻辑，
+/// 不在 SDK 内部调用加解密 SDK。
+typedef MessageTransformer = Map<String, dynamic> Function(
+  Map<String, dynamic> raw,
+);
+
+/// WebSocket 连接管理
+///
+/// 在 SocketClient（SDK 底层能力）之上封装：
+/// - 连接/断连生命周期（登录连接、登出断连）
+/// - 前后台生命周期（后台断连省电、前台自动重连）
+/// - 网络状态响应（断网断连、恢复网络立即重连）
+/// - 操作前置检查（网络可用性 + 后台状态）
+/// - 消息预处理管道（通过 [onMessageTransform] 回调注入解密等）
+/// - 发送 API 透传
+///
+/// 不使用单例，通过 Riverpod Provider 注入。
+///
+/// ## 数据流位置
+///
+/// ```
+/// SocketClient.messageStream（原始消息）
+///   → onMessageTransform?（解密回调，App 层注入）
+///     → ★ SocketManager.messageStream ★   ← 你在这里
+///       → 业务模块消费
+/// ```
+///
+/// ## 生命周期流程
+///
+/// ```
+/// 登录成功 → connect(token) → 前置检查 → 建立连接
+/// App 进后台 → onEnterBackground() → 断开连接（省电）
+/// App 回前台 → onEnterForeground() → 检查网络 → 自动重连
+/// 网络丢失 → handleNetworkLost() → 断开连接
+/// 网络恢复 → handleNetworkRestored() → 退避重连（防抖动）
+/// 登出 → disconnect() → 断开连接，清除 token
+/// ```
+///
+/// ## 前置检查策略
+///
+/// 所有会发起网络操作的方法都先检查前置条件：
+/// - connect → 检查网络可用性 + 是否在后台
+/// - send / sendString → 检查连接状态 + 是否在后台
+/// - onEnterForeground 重连 → 检查网络可用性
+class SocketManager {
+  final NetworksMessagingApi _client;
+  final String _wsUrl;
+
+  /// 消息预处理回调
+  ///
+  /// 登录后由 Provider 层注入，用于消息解密等。
+  /// 不注入时直接透传原始消息。
+  ///
+  /// TODO: 接入加解密 SDK 后实现
+  final MessageTransformer? onMessageTransform;
+
+  /// 网络可用性查询（App 层注入）
+  ///
+  /// 与 HTTP 层 [ApiConfig.onCheckNetworkAvailable] 对称。
+  /// 连接和重连前调用，无网络时跳过操作并标记恢复时重试。
+  final Future<bool> Function()? onCheckNetworkAvailable;
+
+  /// 日志回调
+  final void Function(String message, {String? tag})? onLog;
+
+  // ── 内部状态 ──
+
+  /// 上次连接使用的 token，用于前台/网络恢复时自动重连
+  String? _lastToken;
+
+  /// 后台断连标记：前台恢复时需要重连
+  bool _reconnectOnForeground = false;
+
+  /// 断网标记：网络恢复时需要重连
+  bool _reconnectOnNetworkRestore = false;
+
+  /// 当前是否在后台
+  bool _isInBackground = false;
+
+  /// 网络恢复退避防抖器
+  ///
+  /// 网络抖动（快速 offline → online 切换）时，
+  /// 用指数退避避免反复锤服务器。
+  /// 通过 [NetworkBackoffDebouncer] 实现指数退避。
+  final NetworkBackoffDebouncer _networkDebouncer = NetworkBackoffDebouncer();
+
+  /// 前台恢复延迟重连定时器
+  ///
+  /// 回前台后延迟 500ms 等待网络稳定再重连。
+  /// 期间如果再次进后台 / 主动断连 / dispose，及时取消。
+  Timer? _foregroundReconnectTimer;
+
+  SocketManager({
+    required NetworksMessagingApi client,
+    required String wsUrl,
+    this.onMessageTransform,
+    this.onCheckNetworkAvailable,
+    this.onLog,
+  })  : _client = client,
+        _wsUrl = wsUrl;
+
+  // ── 连接 ──────────────────────────────────────────────────────────────────
+
+  /// 连接 WebSocket
+  ///
+  /// 登录成功后调用，token 从登录响应获取。
+  /// URL 由 Provider 层从 AppConfig 构建后注入，此处不关心来源。
+  ///
+  /// 前置检查：
+  /// - 在后台 → 跳过，标记前台恢复时重连
+  /// - 无网络 → 跳过，标记网络恢复时重连
+  Future<bool> connect({required String token}) async {
+    _lastToken = token;
+    _reconnectOnForeground = false;
+    _reconnectOnNetworkRestore = false;
+
+    // 前置检查：在后台不连接（省电）
+    if (_isInBackground) {
+      _reconnectOnForeground = true;
+      _log('In background, defer connect to foreground');
+      return false;
+    }
+
+    // 前置检查：无网络不连接
+    if (!await _isNetworkAvailable()) {
+      _reconnectOnNetworkRestore = true;
+      _log('No network, defer connect to network restore');
+      return false;
+    }
+
+    _log('Connecting...');
+    return _client.connect(_wsUrl, token: token);
+  }
+
+  /// 断开连接（主动断连）
+  ///
+  /// 登出时调用。清除 token，取消所有待执行的重连，不再自动重连。
+  Future<void> disconnect() async {
+    _lastToken = null;
+    _reconnectOnForeground = false;
+    _reconnectOnNetworkRestore = false;
+    _foregroundReconnectTimer?.cancel();
+    _foregroundReconnectTimer = null;
+    _networkDebouncer.cancel();
+    _log('Disconnecting (manual)');
+    await _client.disconnect();
+  }
+
+  /// 当前是否已连接
+  bool get isConnected => _client.isConnected;
+
+  /// 当前连接状态
+  SocketConnectionState get connectionState => _client.connectionState;
+
+  /// 当前是否在后台
+  bool get isInBackground => _isInBackground;
+
+  // ── 前后台生命周期 ────────────────────────────────────────────────────────
+  //
+  //   后台 → 断连（省电省流量）
+  //   前台 → 自动重连（如果之前有连接）
+
+  /// App 进后台 → 断开连接，标记前台恢复时重连
+  ///
+  /// 由 App 层 WidgetsBindingObserver 在 [AppLifecycleState.paused] 时调用。
+  /// 后台保持连接会消耗电量和流量，断开后由 push 通知兜底。
+  void onEnterBackground() {
+    _isInBackground = true;
+    // 取消待执行的前台重连（防止快速 前台→后台 切换导致后台建连）
+    _foregroundReconnectTimer?.cancel();
+    _foregroundReconnectTimer = null;
+    // 同步 SocketClient 内部状态（与 onEnterForeground 对称）
+    _client.onEnterBackground();
+
+    if (_lastToken == null) return; // 未登录，无需处理
+
+    // 与 _handleNetworkLost 保持一致：
+    // 不仅 connected，connecting / reconnecting 也要断开，
+    // 防止 SocketClient 在后台继续尝试连接浪费电量和流量。
+    if (_client.isConnected ||
+        _client.connectionState == SocketConnectionState.connecting ||
+        _client.connectionState == SocketConnectionState.reconnecting) {
+      _reconnectOnForeground = true;
+      _log('Entering background, disconnecting to save battery');
+      _client.disconnect();
+    }
+  }
+
+  /// App 回前台 → 自动重连（如果之前后台断连）
+  ///
+  /// 由 App 层 WidgetsBindingObserver 在 [AppLifecycleState.resumed] 时调用。
+  /// 重连前检查网络可用性，无网络时延迟到网络恢复事件再连。
+  void onEnterForeground() {
+    _isInBackground = false;
+    _client.onEnterForeground();
+
+    if (_reconnectOnForeground && _lastToken != null) {
+      _reconnectOnForeground = false;
+      _log('Returning to foreground, reconnecting...');
+      // 延迟 500ms 等待网络稳定，通过 Timer 跟踪以便进后台时取消
+      _foregroundReconnectTimer?.cancel();
+      _foregroundReconnectTimer = Timer(
+        const Duration(milliseconds: 500),
+        () async {
+          _foregroundReconnectTimer = null;
+          // 双重保险：回调执行时再次检查后台状态
+          if (_isInBackground) {
+            _reconnectOnForeground = true;
+            _log('Went back to background during delay, skip reconnect');
+            return;
+          }
+          if (!_client.isConnected && _lastToken != null) {
+            // 前置检查：网络可用性
+            if (!await _isNetworkAvailable()) {
+              _reconnectOnNetworkRestore = true;
+              _log('Network unavailable, defer reconnect to network restore');
+              return;
+            }
+            _client.connect(_wsUrl, token: _lastToken!);
+          }
+        },
+      );
+    }
+  }
+
+  // ── 网络状态变化 ──────────────────────────────────────────────────────────
+  //
+  //   网络丢失 → 断连（避免无效重试消耗资源）
+  //   网络恢复 → 退避重连（防网络抖动）
+
+  /// 网络状态变化处理
+  ///
+  /// 由 App 层 NetworkMonitor.onStatusChanged 事件驱动。
+  void handleNetworkStatusChanged({required bool isAvailable}) {
+    if (isAvailable) {
+      _handleNetworkRestored();
+    } else {
+      _handleNetworkLost();
+    }
+  }
+
+  /// 网络丢失 → 断开连接，标记网络恢复时重连
+  ///
+  /// 断网后继续重试没有意义，主动断连避免无效重连消耗资源。
+  void _handleNetworkLost() {
+    if (_lastToken == null) return; // 未登录，无需处理
+
+    if (_client.isConnected ||
+        _client.connectionState == SocketConnectionState.connecting ||
+        _client.connectionState == SocketConnectionState.reconnecting) {
+      _reconnectOnNetworkRestore = true;
+      _log('Network lost, disconnecting');
+      _client.disconnect();
+    }
+  }
+
+  /// 网络恢复 → 退避重连
+  ///
+  /// 通过 [NetworkBackoffDebouncer] 控制重连频率，
+  /// 网络抖动（快速 offline/online 切换）时不会反复锤服务器。
+  ///
+  /// 退避进程：4s → 8s → 16s → 32s → 60s（封顶），
+  /// 网络稳定超过 2 分钟后重置。
+  void _handleNetworkRestored() {
+    if (_reconnectOnNetworkRestore && _lastToken != null) {
+      _reconnectOnNetworkRestore = false;
+
+      // 在后台不重连，等前台恢复时再连
+      if (_isInBackground) {
+        _reconnectOnForeground = true;
+        _log('Network restored but in background, defer to foreground');
+        return;
+      }
+
+      _log('Network restored, scheduling reconnect with backoff');
+      _networkDebouncer.call(() {
+        if (!_client.isConnected && _lastToken != null && !_isInBackground) {
+          _log('Backoff timer fired, reconnecting');
+          _client.connect(_wsUrl, token: _lastToken!);
+        }
+      });
+    }
+  }
+
+  // ── 消息流 ────────────────────────────────────────────────────────────────
+
+  /// 处理后的 JSON 消息流
+  ///
+  /// 经过 [onMessageTransform] 预处理（解密等）后的消息。
+  /// 业务模块应监听此流，不直接监听 SocketClient.messageStream。
+  Stream<Map<String, dynamic>> get messageStream {
+    if (onMessageTransform != null) {
+      return _client.messageStream.map(onMessageTransform!);
+    }
+    return _client.messageStream;
+  }
+
+  /// 原始消息流（不经预处理，调试用）
+  Stream<String> get rawMessageStream => _client.rawMessageStream;
+
+  /// 连接状态变化流
+  Stream<SocketConnectionState> get connectionStateStream =>
+      _client.connectionStateStream;
+
+  /// 错误流
+  Stream<SocketError> get errorStream => _client.errorStream;
+
+  // ── 发送 ──────────────────────────────────────────────────────────────────
+
+  /// 发送 JSON 消息
+  ///
+  /// 前置检查：未连接或在后台时不发送。
+  Future<bool> send(Map<String, dynamic> message) {
+    if (!_canSend()) return Future.value(false);
+    return _client.send(message);
+  }
+
+  /// 发送原始字符串
+  ///
+  /// 前置检查：未连接或在后台时不发送。
+  Future<bool> sendString(String message) {
+    if (!_canSend()) return Future.value(false);
+    return _client.sendString(message);
+  }
+
+  // ── 释放 ──────────────────────────────────────────────────────────────────
+
+  /// 释放所有资源
+  Future<void> dispose() {
+    _foregroundReconnectTimer?.cancel();
+    _foregroundReconnectTimer = null;
+    _networkDebouncer.dispose();
+    return _client.dispose();
+  }
+
+  // ── 内部 ──────────────────────────────────────────────────────────────────
+
+  /// 发送前置检查
+  ///
+  /// 两重保险：连接状态 + 后台状态。
+  /// 后台已断连所以 isConnected 通常就能拦住，
+  /// 但显式检查 _isInBackground 防止边界情况遗漏。
+  bool _canSend() {
+    if (!_client.isConnected) {
+      _log('Not connected, cannot send');
+      return false;
+    }
+    if (_isInBackground) {
+      _log('In background, skip send');
+      return false;
+    }
+    return true;
+  }
+
+  /// 查询网络可用性
+  ///
+  /// 未注入回调时默认网络可用（不阻塞操作）。
+  Future<bool> _isNetworkAvailable() async {
+    if (onCheckNetworkAvailable == null) return true;
+    return onCheckNetworkAvailable!();
+  }
+
+  void _log(String message) {
+    onLog?.call(message, tag: 'SocketManager');
+  }
+}

apps/im_app/lib/core/ui/base/app_theme.dart

@@ -0,0 +1,91 @@
+import 'package:flutter/material.dart';
+
+import 'colors.dart';
+import 'font.dart';
+
+/// 主题组装 -- 将 AppColors / AppFont 组装为 ThemeData
+///
+/// 同时提供 Light / Dark 双主题，按钮形状/颜色/字体统一在此定义，
+/// AppButton 只负责变体切换和 loading 逻辑，不硬编码颜色和字体。
+///
+/// ## 数据流位置
+///
+/// ```
+/// AppColors + AppFont (L1 常量)
+///   → ★ AppTheme ★ (L1 组装) ← 你在这里
+///     → MaterialApp(theme: AppTheme.theme, darkTheme: AppTheme.darkTheme)
+///       → Theme.of(context) → 所有 Widget 自动响应主题变化
+/// ```
+///
+/// ## 使用
+///
+/// ```dart
+/// // app/app.dart
+/// MaterialApp(
+///   theme: AppTheme.theme,           // getter 名与 MaterialApp 参数名一一对应
+///   darkTheme: AppTheme.darkTheme,
+/// )
+/// ```
+class AppTheme {
+  AppTheme._();
+
+  /// 亮色主题 — 对应 MaterialApp `theme:` 参数
+  static ThemeData get theme => _build(Brightness.light);
+
+  /// 暗色主题 — 对应 MaterialApp `darkTheme:` 参数
+  static ThemeData get darkTheme => _build(Brightness.dark);
+
+  static ThemeData _build(Brightness brightness) {
+    final isDark = brightness == Brightness.dark;
+    final primary = isDark ? AppColors.primaryLight : AppColors.primary;
+
+    return ThemeData(
+      useMaterial3: true,
+      brightness: brightness,
+      colorScheme: ColorScheme(
+        brightness: brightness,
+        primary: primary,
+        onPrimary: AppColors.white,
+        secondary: primary,
+        onSecondary: AppColors.white,
+        error: AppColors.error,
+        onError: AppColors.white,
+        surface: isDark ? AppColors.gray800 : AppColors.white,
+        onSurface: isDark ? AppColors.white : AppColors.gray900,
+      ),
+      scaffoldBackgroundColor: isDark ? AppColors.gray900 : AppColors.gray50,
+
+      // 字体
+      textTheme: AppFont.textTheme(brightness),
+
+      // ElevatedButton → AppButton.primary
+      elevatedButtonTheme: ElevatedButtonThemeData(
+        style: ElevatedButton.styleFrom(
+          backgroundColor: AppColors.primary,
+          foregroundColor: AppColors.white,
+          disabledBackgroundColor: AppColors.gray400,
+          minimumSize: const Size.fromHeight(48),
+          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
+        ),
+      ),
+
+      // OutlinedButton → AppButton.secondary
+      outlinedButtonTheme: OutlinedButtonThemeData(
+        style: OutlinedButton.styleFrom(
+          foregroundColor: primary,
+          side: BorderSide(color: primary),
+          minimumSize: const Size.fromHeight(48),
+          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
+        ),
+      ),
+
+      // TextButton → AppButton.text
+      textButtonTheme: TextButtonThemeData(
+        style: TextButton.styleFrom(
+          foregroundColor: primary,
+          minimumSize: const Size.fromHeight(48),
+        ),
+      ),
+    );
+  }
+}

apps/im_app/lib/core/ui/base/colors.dart

@@ -0,0 +1,40 @@
+import 'package:flutter/material.dart';
+
+/// 颜色体系 — 与 Figma 设计稿对应
+///
+/// L1 基础常量 -- 不含任何 Widget，只输出颜色常量。
+/// View 层不直接引用 AppColors，通过 Theme.of(context) 访问语义色；
+/// 有特殊硬编码需求（插图、固定品牌色）时可直接引用。
+///
+/// ## 数据流位置
+///
+/// ```
+/// AppColors（颜色常量）← 你在这里
+///   → AppTheme（组装为 ThemeData）
+///     → MaterialApp（注入）
+///       → Theme.of(context)（View 层消费）
+/// ```
+class AppColors {
+  AppColors._();
+
+  // ── Brand Primary ──────────────────────────────────────────────────────────
+  static const primary = Color(0xFF2F80ED);
+  static const primaryDark = Color(0xFF1A6BD4);
+  static const primaryLight = Color(0xFF5BA3F5);
+
+  // ── Semantic ───────────────────────────────────────────────────────────────
+  static const success = Color(0xFF27AE60);
+  static const warning = Color(0xFFF2C94C);
+  static const error = Color(0xFFEB5757);
+
+  // ── Neutral Gray Scale ─────────────────────────────────────────────────────
+  static const white = Color(0xFFFFFFFF);
+  static const gray50 = Color(0xFFF8F9FA);
+  static const gray100 = Color(0xFFF1F3F4);
+  static const gray200 = Color(0xFFE8EAED);
+  static const gray400 = Color(0xFFBDC1C6);
+  static const gray600 = Color(0xFF80868B);
+  static const gray800 = Color(0xFF3C4043);
+  static const gray900 = Color(0xFF202124);
+  static const black = Color(0xFF000000);
+}

apps/im_app/lib/core/ui/base/context_theme_ext.dart

@@ -0,0 +1,89 @@
+import 'package:flutter/material.dart';
+
+import 'font.dart';
+
+/// 主题样式快捷封装
+///
+/// `context.styles` 返回此对象，build 方法里一行获取所有样式，
+/// 之后直接用 `s.bodySmall`、`s.primary`，不再写 Theme.of(context)。
+///
+/// ```dart
+/// final s = context.styles;
+///
+/// Text('标题', style: s.titleMedium)
+/// Text('描述', style: s.bodySmall)
+/// Icon(Icons.home, color: s.primary)
+/// Text('改色', style: s.bodySmall?.copyWith(color: s.primary))
+/// ```
+class AppStyles {
+  AppStyles(BuildContext context)
+      : _t = Theme.of(context).textTheme,
+        _c = Theme.of(context).colorScheme;
+
+  final TextTheme _t;
+  final ColorScheme _c;
+
+  // ── 字体 ──────────────────────────────────────────────────────────────────
+
+  TextStyle? get displayLarge => _t.displayLarge;
+  TextStyle? get displayMedium => _t.displayMedium;
+  TextStyle? get displaySmall => _t.displaySmall;
+
+  TextStyle? get headlineLarge => _t.headlineLarge;
+  TextStyle? get headlineMedium => _t.headlineMedium;
+  TextStyle? get headlineSmall => _t.headlineSmall;
+
+  TextStyle? get titleLarge => _t.titleLarge;
+  TextStyle? get titleMedium => _t.titleMedium;
+  TextStyle? get titleSmall => _t.titleSmall;
+
+  TextStyle? get bodyLarge => _t.bodyLarge;
+  TextStyle? get bodyMedium => _t.bodyMedium;
+  TextStyle? get bodySmall => _t.bodySmall;
+
+  TextStyle? get labelLarge => _t.labelLarge;
+  TextStyle? get labelMedium => _t.labelMedium;
+  TextStyle? get labelSmall => _t.labelSmall;
+
+  // ── 颜色 + 亮暗 ───────────────────────────────────────────────────────────
+
+  Brightness get brightness => _c.brightness;
+  bool get isDark => _c.brightness == Brightness.dark;
+
+  Color get primary => _c.primary;
+  Color get onPrimary => _c.onPrimary;
+  Color get secondary => _c.secondary;
+  Color get onSecondary => _c.onSecondary;
+  Color get error => _c.error;
+  Color get onError => _c.onError;
+  Color get surface => _c.surface;
+  Color get onSurface => _c.onSurface;
+  Color get outline => _c.outline;
+  Color get outlineVariant => _c.outlineVariant;
+
+  // ── 预组合样式（字体 + 颜色，开箱即用）──────────────────────────────────────
+  //
+  // 与 AppButton 变体理念一致：按语义选用，无需手动拼 TextStyle 或 copyWith。
+  // 新增场景时在此扩展，保持全局一致。
+
+  /// 分组标题 — 列表 Section、设置分组等（sectionLabel 字体 + primary 色）
+  TextStyle get sectionLabel => AppFont.sectionLabel.copyWith(color: primary);
+
+  /// 辅助文字 — 元数据、次要信息、时间戳等（labelMedium + outline 色）
+  TextStyle? get labelMuted => labelMedium?.copyWith(color: outline);
+
+  /// 正文次要 — 描述、提示等（bodySmall + outline 色）
+  TextStyle? get bodyMuted => bodySmall?.copyWith(color: outline);
+
+  /// 错误提示 — 表单错误、警告等（bodySmall + error 色）
+  TextStyle? get bodyError => bodySmall?.copyWith(color: error);
+}
+
+/// BuildContext 主题入口
+///
+/// ```dart
+/// final s = context.styles;
+/// ```
+extension AppThemeX on BuildContext {
+  AppStyles get styles => AppStyles(this);
+}

apps/im_app/lib/core/ui/base/font.dart

@@ -0,0 +1,215 @@
+import 'package:flutter/material.dart';
+
+/// 字体体系 -- 与 Figma 设计稿对应
+///
+/// L1 基础常量 — 不含颜色，只定义字号/字重/行高/字距。
+/// View 层通过 [AppStyles]（`context.styles`）消费，颜色由主题决定。
+/// 特殊场景（固定样式、不跟主题）可直接引用 AppFont。
+///
+/// ## 数据流位置
+///
+/// ```
+/// AppFont（字体常量）← 你在这里
+///   → AppTheme（组装为 TextTheme → ThemeData）
+///     → MaterialApp（注入）
+///       → context.styles（View 层消费）
+/// ```
+///
+/// ## 使用
+///
+/// ```dart
+/// // 推荐：通过 context.styles 消费（自动响应亮暗主题）
+/// final s = context.styles;
+/// Text('标题', style: s.headlineMedium);
+/// Text('分组', style: s.sectionLabel);   // 预组合：字体 + 主题色
+///
+/// // 特殊场景：固定样式，不跟主题切换
+/// Text('固定', style: AppFont.bodyMedium);
+/// ```
+class AppFont {
+  AppFont._();
+
+  // ── 字体族 ──────────────────────────────────────────────────────────────
+
+  /// 默认字体族（系统字体）
+  ///
+  /// 接入自定义字体时只需修改此常量 + pubspec.yaml fonts 配置。
+  static const String? _fontFamily = null; // null = 系统默认字体
+
+  // ── Display -- 超大展示（启动页、空状态大标题）──────────────────────────
+
+  static const displayLarge = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 57,
+    fontWeight: FontWeight.w400,
+    letterSpacing: -0.25,
+    height: 64 / 57,
+  );
+
+  static const displayMedium = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 45,
+    fontWeight: FontWeight.w400,
+    height: 52 / 45,
+  );
+
+  static const displaySmall = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 36,
+    fontWeight: FontWeight.w400,
+    height: 44 / 36,
+  );
+
+  // ── Headline -- 页面标题（导航栏、Section 标题）────────────────────────
+
+  static const headlineLarge = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 32,
+    fontWeight: FontWeight.w400,
+    height: 40 / 32,
+  );
+
+  static const headlineMedium = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 28,
+    fontWeight: FontWeight.w400,
+    height: 36 / 28,
+  );
+
+  static const headlineSmall = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 24,
+    fontWeight: FontWeight.w400,
+    height: 32 / 24,
+  );
+
+  // ── Title -- 卡片 / 列表标题（聊天列表名称、设置项标题）──────────────
+
+  static const titleLarge = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 22,
+    fontWeight: FontWeight.w500,
+    height: 28 / 22,
+  );
+
+  static const titleMedium = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 16,
+    fontWeight: FontWeight.w500,
+    letterSpacing: 0.15,
+    height: 24 / 16,
+  );
+
+  static const titleSmall = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 14,
+    fontWeight: FontWeight.w500,
+    letterSpacing: 0.1,
+    height: 20 / 14,
+  );
+
+  // ── Body -- 正文内容（聊天气泡、表单输入、描述文字）──────────────────
+
+  static const bodyLarge = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 16,
+    fontWeight: FontWeight.w400,
+    letterSpacing: 0.5,
+    height: 24 / 16,
+  );
+
+  static const bodyMedium = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 14,
+    fontWeight: FontWeight.w400,
+    letterSpacing: 0.25,
+    height: 20 / 14,
+  );
+
+  static const bodySmall = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 12,
+    fontWeight: FontWeight.w400,
+    letterSpacing: 0.4,
+    height: 16 / 12,
+  );
+
+  // ── Label -- 按钮 / 标签 / 辅助文字（按钮文字、Tab、Badge）──────────
+
+  static const labelLarge = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 14,
+    fontWeight: FontWeight.w500,
+    letterSpacing: 0.1,
+    height: 20 / 14,
+  );
+
+  static const labelMedium = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 12,
+    fontWeight: FontWeight.w500,
+    letterSpacing: 0.5,
+    height: 16 / 12,
+  );
+
+  static const labelSmall = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 11,
+    fontWeight: FontWeight.w500,
+    letterSpacing: 0.5,
+    height: 16 / 11,
+  );
+
+  // ── 语义字体（超出 M3 标准级别的产品专属规格）────────────────────────────
+  //
+  // 这里只定义字号/字重/字距，不含颜色。
+  // 颜色由 AppStyles 的预组合样式注入（如 AppStyles.sectionLabel）。
+
+  /// 分组标题：列表 Section、设置分组等（13 / w600 / 0.5 字距）
+  static const sectionLabel = TextStyle(
+    fontFamily: _fontFamily,
+    fontSize: 13,
+    fontWeight: FontWeight.w600,
+    letterSpacing: 0.5,
+  );
+
+  // ── 组装 TextTheme（供 AppTheme 调用）──────────────────────────────────
+
+  /// 根据亮暗模式组装 TextTheme
+  ///
+  /// 默认亮暗共用同一套字体规格。需要按模式区分时，
+  /// 用 copyWith 覆盖个别样式即可，不影响其他级别。
+  ///
+  /// 示例 -- 暗色模式下 labelLarge 改为 regular：
+  /// ```dart
+  /// labelLarge: isDark
+  ///     ? labelLarge.copyWith(fontWeight: FontWeight.w400)
+  ///     : labelLarge,
+  /// ```
+  ///
+  /// AppTheme._build() 中调用：
+  /// ```dart
+  /// textTheme: AppFont.textTheme(brightness),
+  /// ```
+  static TextTheme textTheme(Brightness brightness) {
+    // final isDark = brightness == Brightness.dark;
+
+    return TextTheme(
+      displayLarge: displayLarge,
+      displayMedium: displayMedium,
+      displaySmall: displaySmall,
+      headlineLarge: headlineLarge,
+      headlineMedium: headlineMedium,
+      headlineSmall: headlineSmall,
+      titleLarge: titleLarge,
+      titleMedium: titleMedium,
+      titleSmall: titleSmall,
+      bodyLarge: bodyLarge,
+      bodyMedium: bodyMedium,
+      bodySmall: bodySmall,
+      labelLarge: labelLarge,
+      labelMedium: labelMedium,
+      labelSmall: labelSmall,
+    );
+  }
+}

apps/im_app/lib/core/ui/components/app_button.dart

@@ -0,0 +1,141 @@
+import 'package:flutter/material.dart';
+
+import '../base/context_theme_ext.dart';
+
+/// # AppButton — 按钮原子组件（L2 Component）
+///
+/// 四种命名构造器对应四种变体，loading 状态自动禁用点击。
+/// 颜色和形状由 AppTheme 定义，AppButton 只做变体切换和 loading 逻辑。
+///
+/// ## 数据流位置
+///
+/// ```
+/// View 层 Widget 树
+///   → ★ AppButton.primary / .secondary / .text / .inverse ★ ← 你在这里
+///     → ElevatedButton / OutlinedButton / TextButton / FilledButton
+///       → AppTheme（颜色 / 形状已在 ThemeData 中定义）
+/// ```
+///
+/// ## 使用
+///
+/// ```dart
+/// // 主按钮（全宽，填充色）
+/// AppButton.primary(label: '登录', onPressed: () => vm.login()),
+///
+/// // 加载状态（禁用点击，显示进度圈）
+/// AppButton.primary(label: '登录', onPressed: null, isLoading: true),
+///
+/// // 副按钮（描边）
+/// AppButton.secondary(label: '注册', onPressed: () {}),
+///
+/// // 文字按钮（非全宽）
+/// AppButton.text(label: '忘记密码？', onPressed: () {}),
+///
+/// // 反色按钮：亮色模式黑底白字，暗色模式白底黑字
+/// AppButton.inverse(
+///   label: '切换 Tab',
+///   icon: const Icon(Icons.swap_horiz),
+///   onPressed: () {},
+/// ),
+/// ```
+enum _ButtonVariant { primary, secondary, text, inverse }
+
+class AppButton extends StatelessWidget {
+  const AppButton.primary({
+    super.key,
+    required this.label,
+    this.onPressed,
+    this.isLoading = false,
+    this.fullWidth = true,
+  })  : _variant = _ButtonVariant.primary,
+        icon = null;
+
+  const AppButton.secondary({
+    super.key,
+    required this.label,
+    this.onPressed,
+    this.isLoading = false,
+    this.fullWidth = true,
+  })  : _variant = _ButtonVariant.secondary,
+        icon = null;
+
+  const AppButton.text({
+    super.key,
+    required this.label,
+    this.onPressed,
+    this.isLoading = false,
+    this.fullWidth = false,
+  })  : _variant = _ButtonVariant.text,
+        icon = null;
+
+  /// 反色按钮：颜色随明暗主题取反。
+  ///
+  /// 亮色模式：黑色背景 + 白色文字。
+  /// 暗色模式：白色背景 + 黑色文字。
+  ///
+  /// 可选传 [icon]（`Icon` widget），自动切换为带图标布局。
+  const AppButton.inverse({
+    super.key,
+    required this.label,
+    this.onPressed,
+    this.isLoading = false,
+    this.fullWidth = false,
+    this.icon,
+  }) : _variant = _ButtonVariant.inverse;
+
+  final String label;
+  final VoidCallback? onPressed;
+  final bool isLoading;
+  final bool fullWidth;
+
+  /// 仅 [AppButton.inverse] 使用，其余变体固定为 null
+  final Widget? icon;
+
+  final _ButtonVariant _variant;
+
+  @override
+  Widget build(BuildContext context) {
+    final label = isLoading
+        ? const SizedBox.square(
+            dimension: 20,
+            child: CircularProgressIndicator.adaptive(strokeWidth: 2),
+          )
+        : Text(this.label);
+
+    final button = switch (_variant) {
+      _ButtonVariant.primary =>
+        ElevatedButton(onPressed: isLoading ? null : onPressed, child: label),
+      _ButtonVariant.secondary =>
+        OutlinedButton(onPressed: isLoading ? null : onPressed, child: label),
+      _ButtonVariant.text =>
+        TextButton(onPressed: isLoading ? null : onPressed, child: label),
+      _ButtonVariant.inverse => _buildInverse(context, label),
+    };
+
+    return fullWidth ? SizedBox(width: double.infinity, child: button) : button;
+  }
+
+  Widget _buildInverse(BuildContext context, Widget label) {
+    final s = context.styles;
+    final isDark = s.isDark;
+    final bg = isDark ? Colors.white : Colors.black;
+    final fg = isDark ? Colors.black : Colors.white;
+    final style = FilledButton.styleFrom(
+      backgroundColor: bg,
+      foregroundColor: fg,
+    );
+    if (icon != null) {
+      return FilledButton.icon(
+        onPressed: isLoading ? null : onPressed,
+        style: style,
+        icon: icon!,
+        label: label,
+      );
+    }
+    return FilledButton(
+      onPressed: isLoading ? null : onPressed,
+      style: style,
+      child: label,
+    );
+  }
+}

apps/im_app/lib/core/ui/composites/app_dialog.dart

@@ -0,0 +1,89 @@
+import 'package:flutter/material.dart';
+
+import '../components/app_button.dart';
+
+/// # AppDialog — 业务确认弹窗（L3 Composite）
+///
+/// 封装 showDialog，统一弹窗交互规范（标题 + 内容 + 确认/取消）。
+/// 内部使用 AppButton，展示 L3 → L2 → L1 的完整组合链路。
+///
+/// ## 数据流位置
+///
+/// ```
+/// View 层调用
+///   → AppDialog.show() ← 你在这里（静态入口）
+///     → showDialog<bool>
+///       → AppDialog widget（AlertDialog 布局）
+///         → AppButton.text（取消）
+///         → AppButton.primary（确认）
+///     ← Future<bool?> → true=确认, false=取消, null=点背景关闭
+/// ```
+///
+/// ## 使用
+///
+/// ```dart
+/// // View 层
+/// final confirmed = await AppDialog.show(
+///   context,
+///   title: '删除联系人',
+///   content: '确定要删除该联系人吗？此操作不可恢复。',
+///   confirmLabel: '删除',
+/// );
+/// if (confirmed == true) {
+///   ref.read(contactViewModelProvider.notifier).deleteContact(id);
+/// }
+/// ```
+class AppDialog extends StatelessWidget {
+  const AppDialog._({
+    required this.title,
+    required this.content,
+    required this.confirmLabel,
+    this.cancelLabel,
+  });
+
+  final String title;
+  final String content;
+  final String confirmLabel;
+  final String? cancelLabel;
+
+  /// 显示确认弹窗
+  ///
+  /// 返回：`true` = 确认，`false` = 取消，`null` = 点背景关闭
+  static Future<bool?> show(
+    BuildContext context, {
+    required String title,
+    required String content,
+    String confirmLabel = '确定', // TODO: 接入国际化
+    String? cancelLabel = '取消', // TODO: 接入国际化
+    bool barrierDismissible = true,
+  }) =>
+      showDialog<bool>(
+        context: context,
+        barrierDismissible: barrierDismissible,
+        builder: (_) => AppDialog._(
+          title: title,
+          content: content,
+          confirmLabel: confirmLabel,
+          cancelLabel: cancelLabel,
+        ),
+      );
+
+  @override
+  Widget build(BuildContext context) => AlertDialog(
+        title: Text(title),
+        content: Text(content),
+        actions: [
+          if (cancelLabel != null)
+            AppButton.text(
+              label: cancelLabel!,
+              fullWidth: false,
+              onPressed: () => Navigator.of(context).pop(false),
+            ),
+          AppButton.primary(
+            label: confirmLabel,
+            fullWidth: false,
+            onPressed: () => Navigator.of(context).pop(true),
+          ),
+        ],
+      );
+}

apps/im_app/lib/data/local/drift/app_database.dart

@@ -0,0 +1,40 @@
+import 'package:drift/drift.dart';
+import 'package:im_app/data/local/drift/tables/users.dart';
+
+part 'app_database.g.dart';
+
+@DriftDatabase(tables: [Users])
+class AppDatabase extends _$AppDatabase {
+  AppDatabase(super.e);
+
+  @override
+  int get schemaVersion => 1;
+
+  @override
+  MigrationStrategy get migration {
+    return MigrationStrategy(
+      onCreate: (m) async {
+        await m.createAll();
+      },
+      onUpgrade: (m, from, to) async {
+        // 自动检测并添加缺失列
+        for (final table in allTables) {
+          //取原来的字段
+          final existingColumns = await m.database
+              .customSelect('PRAGMA table_info(${table.actualTableName})')
+              .get();
+          final existingNames = existingColumns
+              .map((r) => r.data['name'] as String)
+              .toSet();
+
+          for (final column in table.$columns) {
+            if (!existingNames.contains(column.name)) {
+              //字段缺失，添加。
+              await m.addColumn(table, column);
+            }
+          }
+        }
+      },
+    );
+  }
+}

apps/im_app/lib/data/local/drift/tables/users.dart

@@ -0,0 +1,41 @@
+import 'package:drift/drift.dart';
+
+@DataClassName('User')
+class Users extends Table {
+  IntColumn get id => integer().autoIncrement()();
+  IntColumn get uid => integer().nullable()();
+  TextColumn get uuid => text().nullable()();
+  IntColumn get lastOnline => integer().nullable()();
+  TextColumn get profilePic => text().nullable()();
+  TextColumn get profilePicGaussian => text().withDefault(const Constant(''))();
+  TextColumn get nickname => text().nullable()();
+  TextColumn get depositName => text().nullable()();
+  IntColumn get hasSetDepositName => integer().withDefault(const Constant(0))();
+  TextColumn get contact => text().nullable()();
+  TextColumn get countryCode => text().nullable()();
+  TextColumn get username => text().nullable()();
+  IntColumn get role => integer().nullable()();
+  IntColumn get relationship => integer().nullable()();
+  IntColumn get friendStatus => integer().nullable()();
+  TextColumn get bio => text().nullable()();
+  TextColumn get userAlias => text().nullable()();
+  IntColumn get requestAt => integer().nullable()();
+  IntColumn get deletedAt => integer().nullable()();
+  TextColumn get email => text().nullable()();
+  TextColumn get recoveryEmail => text().nullable()();
+  TextColumn get remark => text().nullable()();
+  TextColumn get source => text().nullable()();
+  IntColumn get addIndex => integer().nullable()();
+  IntColumn get incomingSoundId => integer().withDefault(const Constant(0))();
+  IntColumn get outgoingSoundId => integer().withDefault(const Constant(0))();
+  IntColumn get notificationSoundId => integer().withDefault(const Constant(0))();
+  IntColumn get sendMessageSoundId => integer().withDefault(const Constant(0))();
+  IntColumn get groupNotificationSoundId => integer().withDefault(const Constant(0))();
+  TextColumn get groupTags => text().withDefault(const Constant('[]'))();
+  TextColumn get friendTags => text().withDefault(const Constant('[]'))();
+  TextColumn get publicKey => text().nullable()();
+  IntColumn get configBits => integer().withDefault(const Constant(0))();
+  TextColumn get hint => text().nullable()();
+  @override
+  String get tableName => 'user';
+}

apps/im_app/lib/data/models/user_dto.dart

@@ -0,0 +1,68 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import '../../domain/entities/user.dart';
+
+part 'user_dto.g.dart';
+
+/// 用户 DTO（Data Transfer Object）
+///
+/// local / remote 共用的数据传输对象，放在 data/models/。
+/// 提供与 Domain Entity [User] 之间的双向转换。
+///
+/// ## 数据流位置（本地存储场景）
+///
+/// ```
+/// 写入本地：
+///   LoginData.toEntity() → User
+///     → UserDto.fromEntity(user) → ★ UserDto ★   ← 你在这里
+///       → toJson() → SQLite / SharedPreferences
+///
+/// 读取本地：
+///   SQLite / SharedPreferences → JSON
+///     → ★ UserDto.fromJson() ★                    ← 你在这里
+///       → UserDto.toEntity() → User
+///         → ViewModel.state → View
+/// ```
+///
+/// 注意：登录接口的 Response DTO 是 [LoginData]（含 token），
+/// 本类用于纯用户信息的本地持久化，不含 token。
+@JsonSerializable()
+class UserDto {
+  @JsonKey(name: 'user_id')
+  final String userId;
+  final String email;
+  final String? nickname;
+  final String? avatar;
+
+  const UserDto({
+    required this.userId,
+    required this.email,
+    this.nickname,
+    this.avatar,
+  });
+
+  factory UserDto.fromJson(Map<String, dynamic> json) =>
+      _$UserDtoFromJson(json);
+
+  Map<String, dynamic> toJson() => _$UserDtoToJson(this);
+
+  /// DTO → Domain Entity
+  User toEntity() {
+    return User(
+      id: userId,
+      email: email,
+      nickname: nickname,
+      avatar: avatar,
+    );
+  }
+
+  /// Domain Entity → DTO
+  factory UserDto.fromEntity(User user) {
+    return UserDto(
+      userId: user.id,
+      email: user.email,
+      nickname: user.nickname,
+      avatar: user.avatar,
+    );
+  }
+}

apps/im_app/lib/data/remote/get_profile_request.dart

@@ -0,0 +1,82 @@
+import 'package:json_annotation/json_annotation.dart';
+import 'package:networks_sdk/networks_sdk.dart';
+
+import '../../../core/foundation/api_paths.dart';
+import '../../../domain/entities/user.dart';
+
+part 'get_profile_request.g.dart';
+
+/// # /user/profile — 获取用户资料（GET 请求示例）
+///
+/// 演示：GET 请求 + 无 body 参数的模式。
+/// GET 请求的 toJson() 结果会自动作为 URL query parameters 发送。
+///
+/// ## 数据流位置
+///
+/// ```
+/// UserRepositoryImpl.getProfile()
+///   → _client.executeRequest( ★ GetProfileRequest ★ )     ← 你在这里
+///     → 服务端 GET /user/profile
+///     → 响应 JSON → ★ ProfileData ★                       ← 也在这里
+///       → ProfileData.toEntity() → User
+/// ```
+
+// ─────────────────────────────────────────────
+//  Response DTO
+// ─────────────────────────────────────────────
+
+/// 用户资料响应 DTO（只需反序列化，禁止生成无用的 toJson）
+@JsonSerializable(createToJson: false)
+class ProfileData {
+  @JsonKey(name: 'user_id')
+  final String userId;
+  final String email;
+  final String? nickname;
+  final String? avatar;
+
+  const ProfileData({
+    required this.userId,
+    required this.email,
+    this.nickname,
+    this.avatar,
+  });
+
+  factory ProfileData.fromJson(Map<String, dynamic> json) =>
+      _$ProfileDataFromJson(json);
+
+  /// DTO → Domain Entity
+  User toEntity() {
+    return User(
+      id: userId,
+      email: email,
+      nickname: nickname,
+      avatar: avatar,
+    );
+  }
+}
+
+// ─────────────────────────────────────────────
+//  Request
+// ─────────────────────────────────────────────
+
+/// 获取用户资料请求（GET，无参数）
+///
+/// GET 请求无 body，toJson() 返回空 map。
+/// 如需 query 参数（如分页），添加字段即可，
+/// toJson() 会自动将字段序列化为 URL query string。
+@ApiRequest(
+  path: ApiPaths.userProfile,
+  method: HttpMethod.get,
+  responseType: ProfileData,
+)
+@JsonSerializable()
+class GetProfileRequest extends ApiRequestable<ProfileData>
+    with _$GetProfileRequestApi {
+  GetProfileRequest();
+
+  factory GetProfileRequest.fromJson(Map<String, dynamic> json) =>
+      _$GetProfileRequestFromJson(json);
+
+  @override
+  Map<String, dynamic> toJson() => _$GetProfileRequestToJson(this);
+}

apps/im_app/lib/data/remote/login_request.dart

@@ -0,0 +1,90 @@
+import 'package:json_annotation/json_annotation.dart';
+import 'package:networks_sdk/networks_sdk.dart';
+
+import '../../../core/foundation/api_paths.dart';
+import '../../../domain/entities/user.dart';
+
+part 'login_request.g.dart';
+
+/// # /auth/login — 登录接口
+///
+/// 一个端点 = 一个文件，Response DTO + Request 放在同一文件中。
+///
+/// ## 数据流位置
+///
+/// ```
+/// AuthRepositoryImpl.login(email, password)
+///   → _client.executeRequest( ★ LoginRequest ★ )     ← 你在这里
+///     → 服务端 POST /auth/login
+///     → 响应 JSON → ★ LoginData ★                    ← 也在这里
+///       → LoginData.toEntity() → User
+/// ```
+
+// ─────────────────────────────────────────────
+//  Response DTO
+// ─────────────────────────────────────────────
+
+/// 登录响应 DTO
+///
+/// 服务端返回的登录数据，包含 token 和用户信息。
+/// 通过 [toEntity] 转换为 Domain Entity [User]。
+@JsonSerializable()
+class LoginData {
+  final String token;
+  @JsonKey(name: 'user_id')
+  final String userId;
+  final String email;
+  final String? nickname;
+  final String? avatar;
+
+  const LoginData({
+    required this.token,
+    required this.userId,
+    required this.email,
+    this.nickname,
+    this.avatar,
+  });
+
+  factory LoginData.fromJson(Map<String, dynamic> json) =>
+      _$LoginDataFromJson(json);
+
+  Map<String, dynamic> toJson() => _$LoginDataToJson(this);
+
+  /// DTO → Domain Entity
+  User toEntity() {
+    return User(
+      id: userId,
+      email: email,
+      nickname: nickname,
+      avatar: avatar,
+    );
+  }
+}
+
+// ─────────────────────────────────────────────
+//  Request
+// ─────────────────────────────────────────────
+
+/// 登录请求
+///
+/// `@ApiRequest` 自动生成 `_$LoginRequestApi` mixin，
+/// 提供 path / method / requestType / includeToken / fromJson 自动注册。
+@ApiRequest(
+  path: ApiPaths.authLogin,
+  method: HttpMethod.post,
+  responseType: LoginData,
+  requestType: ApiRequestType.login,
+)
+@JsonSerializable()
+class LoginRequest extends ApiRequestable<LoginData> with _$LoginRequestApi {
+  final String email;
+  final String password;
+
+  LoginRequest({required this.email, required this.password});
+
+  factory LoginRequest.fromJson(Map<String, dynamic> json) =>
+      _$LoginRequestFromJson(json);
+
+  @override
+  Map<String, dynamic> toJson() => _$LoginRequestToJson(this);
+}

apps/im_app/lib/data/remote/logout_request.dart

@@ -0,0 +1,32 @@
+import 'package:networks_sdk/networks_sdk.dart';
+
+import '../../../core/foundation/api_paths.dart';
+
+/// # /auth/logout — 登出接口（无响应数据示例）
+///
+/// 演示：POST 请求 + 无 Response DTO 的模式。
+/// 服务端返回 `{"code": 0, "message": "ok"}` 无 data 字段，
+/// `executeRequest` 返回 null，调用方直接 await 即可。
+///
+/// 此接口不使用 @ApiRequest 注解，直接实现 ApiRequestable，
+/// 演示手动实现方式（适用于不需要代码生成器的简单接口）。
+///
+/// ## 数据流位置
+///
+/// ```
+/// AuthRepositoryImpl.logout()
+///   → _client.executeRequest( ★ LogoutRequest ★ )     ← 你在这里
+///     → 服务端 POST /auth/logout
+///     → 响应 {"code": 0, "message": "ok"} → null
+/// ```
+class LogoutRequest extends ApiRequestable<void> {
+  @override
+  String get path => ApiPaths.authLogout;
+
+  @override
+  HttpMethod get method => HttpMethod.post;
+
+  /// 登出不需要请求体参数
+  @override
+  Map<String, dynamic> toJson() => {};
+}

apps/im_app/lib/data/remote/upload_file_request.dart

@@ -0,0 +1,160 @@
+import 'dart:typed_data';
+
+import 'package:json_annotation/json_annotation.dart';
+import 'package:networks_sdk/networks_sdk.dart';
+
+import '../../../core/foundation/api_paths.dart';
+
+part 'upload_file_request.g.dart';
+
+/// # /upload/file — 文件上传（Upload 请求示例）
+///
+/// 演示两种上传模式：
+///
+/// ## 模式 A: FormData 上传到自有后端
+/// 适用于后端直接接收文件的场景。
+/// 使用 [UploadFileRequest] — path 为相对路径，SDK 自动拼 baseURL。
+///
+/// ## 模式 B: 二进制上传到 S3 presigned URL
+/// 适用于先向后端获取 presigned URL，再直接上传到 S3 的场景。
+/// 使用 [S3UploadRequest] — path 为完整 URL，override decodeResponse。
+///
+/// ## Upload 与普通请求的区别
+///
+/// | 普通请求 | Upload 请求 |
+/// |---------|-----------|
+/// | `toJson()` → JSON body | `uploadData` → FormData / Uint8List |
+/// | `requestType: request` | `requestType: upload` |
+/// | `parameters` 有值 | `parameters` 返回 null |
+/// | 标准 `{ code, msg, data }` 响应 | 可能需要 override `decodeResponse` |
+
+// ─────────────────────────────────────────────
+//  Response DTO
+// ─────────────────────────────────────────────
+
+/// 文件上传响应 DTO（只需反序列化，禁止生成无用的 toJson）
+@JsonSerializable(createToJson: false)
+class UploadResult {
+  final String url;
+
+  @JsonKey(name: 'file_id')
+  final String fileId;
+
+  const UploadResult({required this.url, required this.fileId});
+
+  factory UploadResult.fromJson(Map<String, dynamic> json) =>
+      _$UploadResultFromJson(json);
+}
+
+// ═════════════════════════════════════════════
+//  模式 A: FormData 上传到自有后端
+// ═════════════════════════════════════════════
+
+/// FormData 上传请求
+///
+/// 上传到自有后端 `/upload/file`，响应为标准 `{ code, message, data }` 信封。
+/// 无需 override `decodeResponse`。
+@ApiRequest(
+  path: ApiPaths.uploadFile,
+  method: HttpMethod.post,
+  responseType: UploadResult,
+  requestType: ApiRequestType.upload,
+)
+class UploadFileRequest extends ApiRequestable<UploadResult>
+    with _$UploadFileRequestApi {
+  final String filePath;
+  final String? fileName;
+
+  UploadFileRequest({required this.filePath, this.fileName});
+
+  @override
+  Map<String, dynamic> toJson() => {};
+
+  /// FormData — SDK 通过 uploadData 获取上传数据
+  @override
+  Object? get uploadData {
+    return FormData.fromMap({
+      'file': MultipartFile.fromFileSync(filePath, filename: fileName),
+    });
+  }
+}
+
+// ═════════════════════════════════════════════
+//  模式 B: 二进制上传到 S3 presigned URL
+// ═════════════════════════════════════════════
+
+/// S3 presigned URL 上传响应
+class S3UploadResponse {
+  final bool success;
+  final String? message;
+
+  const S3UploadResponse({this.success = true, this.message});
+}
+
+/// S3 presigned URL 上传请求
+///
+/// 特点：
+/// - path 为完整的 presigned URL（SDK 检测到 http 开头不拼 baseURL）
+/// - uploadData 为 Uint8List 二进制数据
+/// - 自定义 headers（Content-Type: application/octet-stream）
+/// - override decodeResponse — S3 返回 204 No Content 或 XML，不是标准信封
+class S3UploadRequest extends ApiRequestable<S3UploadResponse> {
+  final Uint8List data;
+  final String presignedURL;
+
+  S3UploadRequest({required this.data, required this.presignedURL});
+
+  @override
+  String get path => presignedURL;
+
+  @override
+  HttpMethod get method => HttpMethod.put;
+
+  @override
+  ApiRequestType get requestType => ApiRequestType.upload;
+
+  @override
+  Map<String, String>? get customHeaders => {
+        'Content-Type': 'application/octet-stream',
+      };
+
+  @override
+  Map<String, dynamic> toJson() => {};
+
+  /// 二进制数据
+  @override
+  Object? get uploadData => data;
+
+  /// S3 响应不走标准 { code, message, data } 信封，需要自定义解码
+  ///
+  /// 可能的响应：
+  /// - 204 No Content（空 body）→ 成功
+  /// - 200 + XML body → 成功
+  /// - 200 + JSON body → 尝试解码
+  @override
+  S3UploadResponse? decodeResponse(Response response) {
+    // 空响应或 2xx 状态码 → 成功
+    if (response.data == null ||
+        (response.data is List && (response.data as List).isEmpty)) {
+      return const S3UploadResponse(success: true);
+    }
+
+    // JSON 响应 → 尝试解码
+    if (response.data is Map<String, dynamic>) {
+      final json = response.data as Map<String, dynamic>;
+      return S3UploadResponse(
+        success: true,
+        message: json['message'] as String?,
+      );
+    }
+
+    // 2xx 状态码 → 成功
+    if (response.statusCode != null &&
+        response.statusCode! >= 200 &&
+        response.statusCode! < 300) {
+      return const S3UploadResponse(success: true);
+    }
+
+    return const S3UploadResponse(success: true);
+  }
+}

apps/im_app/lib/data/repositories/auth_repository_impl.dart

@@ -0,0 +1,58 @@
+import 'package:networks_sdk/networks_sdk.dart';
+
+import '../../domain/entities/user.dart';
+import '../../domain/repositories/auth_repository.dart';
+import '../remote/login_request.dart';
+import '../remote/logout_request.dart';
+
+/// 认证 Repository 实现
+///
+/// implements [AuthRepository] 接口（domain/repositories/ 中定义）。
+/// 直接使用 [ApiClient] 发送请求，将 DTO 转为 Domain Entity。
+/// 后续可加 Local DataSource 实现离线缓存。
+///
+/// ## 数据流位置
+///
+/// ```
+/// LoginUseCase.execute(email, password)
+///   → ★ AuthRepositoryImpl.login() ★        ← 你在这里
+///     → ApiClient.executeRequest(LoginRequest)
+///       → 服务端 POST /auth/login
+///     ← LoginData（Response DTO）
+///     → onTokenUpdate(token)                  ← 回调写入 Token
+///     ← LoginData.toEntity() → User          ← DTO → Entity 转换在这里
+///   ← User（Domain Entity）
+/// ```
+class AuthRepositoryImpl implements AuthRepository {
+  final NetworksSdkApi _client;
+  final void Function(String?) _onTokenUpdate;
+
+  AuthRepositoryImpl({required NetworksSdkApi client, required void Function(String?) onTokenUpdate,})  : _client = client, _onTokenUpdate = onTokenUpdate;
+
+  @override
+  Future<User> login({required String email, required String password,}) async
+  {
+    final LoginData? loginData = await _client.executeRequest(LoginRequest(email: email, password: password),);
+
+    if (loginData == null) {
+      throw Exception('Login failed: empty response'); // TODO: 接入国际化
+    }
+
+    // 回调写入 Token（内存 + 持久化由 Provider 层组合）
+    _onTokenUpdate(loginData.token);
+
+    return loginData.toEntity(); // DTO → Domain Entity
+  }
+
+  @override
+  Future<User?> getCurrentUser() async {
+    // TODO: 从本地存储获取用户信息
+    return null;
+  }
+
+  @override
+  Future<void> logout() async {
+    await _client.executeRequest(LogoutRequest());
+    _onTokenUpdate(null); // 回调清除 Token（内存 + 持久化由 Provider 层组合）
+  }
+}

apps/im_app/lib/domain/entities/user.dart

@@ -0,0 +1,28 @@
+/// 用户 Domain 实体
+///
+/// 全局共享实体，被 auth / chat / contact 等多个 Feature 共用。
+/// 纯 Dart 类，零 Flutter / 零网络 / 零 DB 依赖。
+///
+/// ## 数据流位置
+///
+/// ```
+/// 服务端 JSON
+///   → LoginData（Response DTO，data/remote/login_request.dart）
+///     → LoginData.toEntity()
+///       → ★ User ★                ← 你在这里
+///         → ViewModel.state
+///           → View 渲染
+/// ```
+class User {
+  final String id;
+  final String email;
+  final String? nickname;
+  final String? avatar;
+
+  const User({
+    required this.id,
+    required this.email,
+    this.nickname,
+    this.avatar,
+  });
+}

apps/im_app/lib/domain/repositories/auth_repository.dart

@@ -0,0 +1,26 @@
+import '../entities/user.dart';
+
+/// 认证 Repository 接口（依赖倒置）
+///
+/// Domain 层定义 What，Data 层实现 How。
+/// ViewModel 依赖此接口，不依赖具体实现 [AuthRepositoryImpl]。
+///
+/// ## 数据流位置
+///
+/// ```
+/// ViewModel
+///   → ★ AuthRepository.login() ★        ← 你在这里（接口）
+///     → AuthRepositoryImpl.login()       ← data/repositories/（实现）
+///       → _client.executeRequest(LoginRequest)
+///         → 服务端
+/// ```
+abstract interface class AuthRepository {
+  /// 登录，返回 Domain Entity [User]
+  Future<User> login({required String email, required String password});
+
+  /// 获取当前登录用户信息
+  Future<User?> getCurrentUser();
+
+  /// 退出登录
+  Future<void> logout();
+}

apps/im_app/lib/features/app_tab/view/app_tab.dart

@@ -0,0 +1,52 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+/// 主 Tab 容器（Shell 层）
+///
+/// 由 [StatefulShellRoute.indexedStack] 驱动，不持有任何状态。
+/// Tab 切换通过 [navigationShell.goBranch] 完成，go_router 负责保持各 Tab 的导航栈。
+///
+/// Tabs（index 顺序）：
+/// - 0：聊天
+/// - 1：联系人
+/// - 2：设置
+class AppTab extends StatelessWidget {
+  const AppTab({
+    super.key,
+    required this.navigationShell,
+  });
+
+  final StatefulNavigationShell navigationShell;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: navigationShell,
+      bottomNavigationBar: BottomNavigationBar(
+        currentIndex: navigationShell.currentIndex,
+        onTap: (index) => navigationShell.goBranch(
+          index,
+          // 再次点击已激活的 Tab 时回到该 Tab 的初始路由
+          initialLocation: index == navigationShell.currentIndex,
+        ),
+        items: const [
+          BottomNavigationBarItem(
+            icon: Icon(Icons.chat_bubble_outline),
+            activeIcon: Icon(Icons.chat_bubble),
+            label: '聊天',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.people_outline),
+            activeIcon: Icon(Icons.people),
+            label: '联系人',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.settings_outlined),
+            activeIcon: Icon(Icons.settings),
+            label: '设置',
+          ),
+        ],
+      ),
+    );
+  }
+}