feat: import Chinese-localized Buzz source snapshot

Signed-off-by: cls_宁波本机 <908705107@qq.com>
2026-08-13 18:34:25 +08:00
parent 61c3fa1df9
commit 9dfa06ffee
3785 changed files with 1085458 additions and 2 deletions
@@ -0,0 +1,36 @@
+**/dgph
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/AppOverrides.xcconfig
+Flutter/WorktreeOverrides.xcconfig
+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
@@ -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>
@@ -0,0 +1,21 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"
+
+// Default app bundle identifier. Internal/custom builds can override this
+// without patching tracked files by writing
+// `mobile/ios/Flutter/AppOverrides.xcconfig` containing
+// `BUNDLE_IDENTIFIER = your.app.id` (gitignored).
+BUNDLE_IDENTIFIER = com.buzz.buzzMobile
+APP_DISPLAY_NAME = Buzz
+
+// Worktree-aware debug identity (gitignored, written by
+// scripts/mobile-worktree-overrides.sh): a per-worktree bundle identifier
+// and a branch-labelled display name so debug builds from multiple worktrees
+// install side by side. Release and Profile builds never include it.
+#include? "WorktreeOverrides.xcconfig"
+
+// Developer app-specific overrides are included last: xcconfig
+// later-include-wins is per variable, so a personal BUNDLE_IDENTIFIER for
+// device signing beats the worktree default while unset variables still
+// fall through to the worktree values.
+#include? "AppOverrides.xcconfig"
@@ -0,0 +1,11 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"
+
+// Defaults for the iOS Release build. Internal/custom builds (e.g. an
+// enterprise-signed distribution) override these without patching tracked
+// files by writing `mobile/ios/Flutter/AppOverrides.xcconfig` (gitignored).
+BUNDLE_IDENTIFIER = com.buzz.buzzMobile
+APP_DISPLAY_NAME = Buzz
+CODE_SIGN_STYLE = Automatic
+CODE_SIGN_IDENTITY = iPhone Developer
+#include? "AppOverrides.xcconfig"
@@ -0,0 +1,42 @@
+platform :ios, '16.0'
+
+# 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
@@ -0,0 +1,111 @@
+PODS:
+  - app_badge_plus (1.2.10):
+    - Flutter
+  - app_links (6.4.1):
+    - Flutter
+  - camera_avfoundation (0.0.1):
+    - Flutter
+  - connectivity_plus (0.0.1):
+    - Flutter
+  - file_selector_ios (0.0.1):
+    - Flutter
+  - Flutter (1.0.0)
+  - flutter_secure_storage_darwin (10.0.0):
+    - Flutter
+    - FlutterMacOS
+  - image_picker_ios (0.0.1):
+    - Flutter
+  - mobile_scanner (7.0.0):
+    - Flutter
+    - FlutterMacOS
+  - open_filex (0.0.2):
+    - Flutter
+  - package_info_plus (0.4.5):
+    - Flutter
+  - photo_manager (3.11.0):
+    - Flutter
+    - FlutterMacOS
+  - share_plus (0.0.1):
+    - Flutter
+  - shared_preferences_foundation (0.0.1):
+    - Flutter
+    - FlutterMacOS
+  - url_launcher_ios (0.0.1):
+    - Flutter
+  - video_player_avfoundation (0.0.1):
+    - Flutter
+    - FlutterMacOS
+
+DEPENDENCIES:
+  - app_badge_plus (from `.symlinks/plugins/app_badge_plus/ios`)
+  - app_links (from `.symlinks/plugins/app_links/ios`)
+  - camera_avfoundation (from `.symlinks/plugins/camera_avfoundation/ios`)
+  - connectivity_plus (from `.symlinks/plugins/connectivity_plus/ios`)
+  - file_selector_ios (from `.symlinks/plugins/file_selector_ios/ios`)
+  - Flutter (from `Flutter`)
+  - flutter_secure_storage_darwin (from `.symlinks/plugins/flutter_secure_storage_darwin/darwin`)
+  - image_picker_ios (from `.symlinks/plugins/image_picker_ios/ios`)
+  - mobile_scanner (from `.symlinks/plugins/mobile_scanner/darwin`)
+  - open_filex (from `.symlinks/plugins/open_filex/ios`)
+  - package_info_plus (from `.symlinks/plugins/package_info_plus/ios`)
+  - photo_manager (from `.symlinks/plugins/photo_manager/darwin`)
+  - share_plus (from `.symlinks/plugins/share_plus/ios`)
+  - shared_preferences_foundation (from `.symlinks/plugins/shared_preferences_foundation/darwin`)
+  - url_launcher_ios (from `.symlinks/plugins/url_launcher_ios/ios`)
+  - video_player_avfoundation (from `.symlinks/plugins/video_player_avfoundation/darwin`)
+
+EXTERNAL SOURCES:
+  app_badge_plus:
+    :path: ".symlinks/plugins/app_badge_plus/ios"
+  app_links:
+    :path: ".symlinks/plugins/app_links/ios"
+  camera_avfoundation:
+    :path: ".symlinks/plugins/camera_avfoundation/ios"
+  connectivity_plus:
+    :path: ".symlinks/plugins/connectivity_plus/ios"
+  file_selector_ios:
+    :path: ".symlinks/plugins/file_selector_ios/ios"
+  Flutter:
+    :path: Flutter
+  flutter_secure_storage_darwin:
+    :path: ".symlinks/plugins/flutter_secure_storage_darwin/darwin"
+  image_picker_ios:
+    :path: ".symlinks/plugins/image_picker_ios/ios"
+  mobile_scanner:
+    :path: ".symlinks/plugins/mobile_scanner/darwin"
+  open_filex:
+    :path: ".symlinks/plugins/open_filex/ios"
+  package_info_plus:
+    :path: ".symlinks/plugins/package_info_plus/ios"
+  photo_manager:
+    :path: ".symlinks/plugins/photo_manager/darwin"
+  share_plus:
+    :path: ".symlinks/plugins/share_plus/ios"
+  shared_preferences_foundation:
+    :path: ".symlinks/plugins/shared_preferences_foundation/darwin"
+  url_launcher_ios:
+    :path: ".symlinks/plugins/url_launcher_ios/ios"
+  video_player_avfoundation:
+    :path: ".symlinks/plugins/video_player_avfoundation/darwin"
+
+SPEC CHECKSUMS:
+  app_badge_plus: 09939f19a075cc742cc155d8ed85e6d8601f0104
+  app_links: 3dbc685f76b1693c66a6d9dd1e9ab6f73d97dc0a
+  camera_avfoundation: 968a9a5323c79a99c166ad9d7866bfd2047b5a9b
+  connectivity_plus: cb623214f4e1f6ef8fe7403d580fdad517d2f7dd
+  file_selector_ios: ec57ec07954363dd730b642e765e58f199bb621a
+  Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
+  flutter_secure_storage_darwin: acdb3f316ed05a3e68f856e0353b133eec373a23
+  image_picker_ios: e0ece4aa2a75771a7de3fa735d26d90817041326
+  mobile_scanner: 9157936403f5a0644ca3779a38ff8404c5434a93
+  open_filex: 432f3cd11432da3e39f47fcc0df2b1603854eff1
+  package_info_plus: af8e2ca6888548050f16fa2f1938db7b5a5df499
+  photo_manager: 6ab48c2ce7ec21aa06d59e6cc049f0b6d9ba7f94
+  share_plus: 50da8cb520a8f0f65671c6c6a99b3617ed10a58a
+  shared_preferences_foundation: 7036424c3d8ec98dfe75ff1667cb0cd531ec82bb
+  url_launcher_ios: 7a95fa5b60cc718a708b8f2966718e93db0cef1b
+  video_player_avfoundation: dd410b52df6d2466a42d28550e33e4146928280a
+
+PODFILE CHECKSUM: bd29822c3d5baf6b44b726f00ea3293a19339ef2
+
+COCOAPODS: 1.16.2
@@ -0,0 +1,776 @@
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+				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 = 16.0;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = 1;
+			};
+			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;
+				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 = 16.0;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = iphoneos;
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
+				TARGETED_DEVICE_FAMILY = 1;
+				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)";
+				DEVELOPMENT_TEAM = "";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = "$(BUNDLE_IDENTIFIER)";
+				PRODUCT_NAME = Buzz;
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				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 = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = "";
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = "$(BUNDLE_IDENTIFIER)";
+				PRODUCT_NAME = Buzz;
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+				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 */;
+}
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>
@@ -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>
@@ -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>
@@ -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 = "Buzz.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 = "Buzz.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 = "Buzz.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 = "Buzz.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
@@ -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>
@@ -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>
@@ -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>
@@ -0,0 +1,586 @@
+import AVFoundation
+import Flutter
+import UIKit
+import UserNotifications
+
+@main
+@objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {
+  private var mediaUploadChannel: FlutterMethodChannel?
+  private var qrScannerChannel: FlutterMethodChannel?
+  private var inlinePhotoPickerSupportChannel: FlutterMethodChannel?
+  private var concentricSheetSurfaceChannel: FlutterMethodChannel?
+  private var nativeAttachmentPopoverCoordinator: NativeAttachmentPopoverCoordinator?
+
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    UNUserNotificationCenter.current().requestAuthorization(options: [.badge]) { _, _ in }
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+
+  func didInitializeImplicitFlutterEngine(_ engineBridge: FlutterImplicitEngineBridge) {
+    GeneratedPluginRegistrant.register(with: engineBridge.pluginRegistry)
+    let messenger = engineBridge.applicationRegistrar.messenger()
+    mediaUploadChannel = FlutterMethodChannel(
+      name: "buzz/media_upload",
+      binaryMessenger: messenger
+    )
+    mediaUploadChannel?.setMethodCallHandler { [weak self] call, result in
+      self?.handleMediaUploadMethodCall(call, result: result)
+    }
+    qrScannerChannel = FlutterMethodChannel(
+      name: "buzz/qr_scanner",
+      binaryMessenger: messenger
+    )
+    qrScannerChannel?.setMethodCallHandler { call, result in
+      Self.handleQrScannerMethodCall(call, result: result)
+    }
+    inlinePhotoPickerSupportChannel = FlutterMethodChannel(
+      name: "buzz/inline_photo_picker",
+      binaryMessenger: messenger
+    )
+    inlinePhotoPickerSupportChannel?.setMethodCallHandler { call, result in
+      guard call.method == "isSupported" else {
+        result(FlutterMethodNotImplemented)
+        return
+      }
+      if #available(iOS 17.0, *) {
+        result(true)
+      } else {
+        result(false)
+      }
+    }
+
+    if let inlinePhotoPickerRegistrar = engineBridge.pluginRegistry.registrar(
+      forPlugin: "BuzzInlinePhotoPicker"
+    ) {
+      inlinePhotoPickerRegistrar.register(
+        InlinePhotoPickerFactory(
+          messenger: messenger,
+          parentViewController: inlinePhotoPickerRegistrar.viewController
+        ),
+        withId: "buzz/inline_photo_picker"
+      )
+    }
+
+    if let concentricSheetRegistrar = engineBridge.pluginRegistry.registrar(
+      forPlugin: "BuzzConcentricSheetSurface"
+    ) {
+      concentricSheetRegistrar.register(
+        ConcentricSheetSurfaceFactory(),
+        withId: "buzz/concentric_sheet_surface"
+      )
+      concentricSheetSurfaceChannel = FlutterMethodChannel(
+        name: "buzz/concentric_sheet_surface",
+        binaryMessenger: messenger
+      )
+      concentricSheetSurfaceChannel?.setMethodCallHandler { call, result in
+        guard call.method == "isSupported" else {
+          result(FlutterMethodNotImplemented)
+          return
+        }
+        if #available(iOS 26.0, *) {
+          result(true)
+        } else {
+          result(false)
+        }
+      }
+    }
+
+    let nativeAttachmentRegistrar = engineBridge.pluginRegistry.registrar(
+      forPlugin: "BuzzNativeAttachmentPopover"
+    )
+    nativeAttachmentPopoverCoordinator = NativeAttachmentPopoverCoordinator(
+      messenger: messenger,
+      parentViewController: nativeAttachmentRegistrar?.viewController
+    )
+  }
+
+  private static func handleQrScannerMethodCall(
+    _ call: FlutterMethodCall,
+    result: @escaping FlutterResult
+  ) {
+    switch call.method {
+    case "usesDynamicIslandQrScannerPortal":
+      result(
+        UIDevice.current.userInterfaceIdiom == .phone
+          && usesDynamicIslandQrScannerPortal(
+            safeAreaTopInset: activeWindowSafeAreaTopInset()
+          )
+      )
+    case "setDynamicIslandScannerStatusBarHidden":
+      guard let hidden = call.arguments as? Bool else {
+        result(
+          FlutterError(
+            code: "invalid_arguments",
+            message: "Expected a Bool status-bar visibility value.",
+            details: nil
+          )
+        )
+        return
+      }
+      UIApplication.shared.setStatusBarHidden(hidden, with: .fade)
+      result(nil)
+    case "performDynamicIslandQrScanSuccessHaptic":
+      let generator = UINotificationFeedbackGenerator()
+      generator.prepare()
+      generator.notificationOccurred(.success)
+      result(nil)
+    default:
+      result(FlutterMethodNotImplemented)
+    }
+  }
+
+  static func usesDynamicIslandQrScannerPortal(
+    safeAreaTopInset: CGFloat
+  ) -> Bool {
+    safeAreaTopInset > 50
+  }
+
+  private static func activeWindowSafeAreaTopInset() -> CGFloat {
+    UIApplication.shared.connectedScenes
+      .compactMap { $0 as? UIWindowScene }
+      .filter { $0.activationState == .foregroundActive }
+      .flatMap(\.windows)
+      .first(where: \.isKeyWindow)?
+      .safeAreaInsets.top ?? 0
+  }
+
+  private func handleMediaUploadMethodCall(
+    _ call: FlutterMethodCall,
+    result: @escaping FlutterResult
+  ) {
+    switch call.method {
+    case "sanitizeImageForUpload":
+      guard
+        let arguments = call.arguments as? [String: Any],
+        let typedData = arguments["bytes"] as? FlutterStandardTypedData,
+        let mimeType = arguments["mimeType"] as? String
+      else {
+        result(
+          FlutterError(
+            code: "invalid_arguments",
+            message: "Expected image bytes and mime type.",
+            details: nil
+          )
+        )
+        return
+      }
+
+      guard let image = UIImage(data: typedData.data) else {
+        result(
+          FlutterError(
+            code: "sanitize_failed",
+            message: "Unable to decode picked image.",
+            details: nil
+          )
+        )
+        return
+      }
+
+      do {
+        guard let sanitizedData = try MediaSanitizer.sanitizeImage(image, mimeType: mimeType) else {
+          result(
+            FlutterError(
+              code: "sanitize_failed",
+              message: "Unable to sanitize picked image.",
+              details: mimeType
+            )
+          )
+          return
+        }
+        result(FlutterStandardTypedData(bytes: sanitizedData))
+      } catch {
+        result(
+          FlutterError(
+            code: "sanitize_failed",
+            message: "Unable to sanitize picked image.",
+            details: mimeType
+          )
+        )
+      }
+    case "transcodeImageToJpeg":
+      guard let typedData = call.arguments as? FlutterStandardTypedData else {
+        result(
+          FlutterError(
+            code: "invalid_arguments",
+            message: "Expected raw image bytes.",
+            details: nil
+          )
+        )
+        return
+      }
+
+      guard let image = UIImage(data: typedData.data) else {
+        result(
+          FlutterError(
+            code: "transcode_failed",
+            message: "Unable to convert picked image to JPEG.",
+            details: nil
+          )
+        )
+        return
+      }
+
+      do {
+        guard let jpegData = try MediaSanitizer.encodeJpeg(image) else {
+          result(
+            FlutterError(
+              code: "transcode_failed",
+              message: "Unable to convert picked image to JPEG.",
+              details: nil
+            )
+          )
+          return
+        }
+        result(FlutterStandardTypedData(bytes: jpegData))
+      } catch {
+        result(
+          FlutterError(
+            code: "transcode_failed",
+            message: "Unable to convert picked image to JPEG.",
+            details: nil
+          )
+        )
+      }
+    case "transcodeVideoToMp4":
+      guard let sourcePath = call.arguments as? String else {
+        result(
+          FlutterError(
+            code: "invalid_arguments",
+            message: "Expected source file path as String.",
+            details: nil
+          )
+        )
+        return
+      }
+      transcodeVideoToMp4(sourcePath: sourcePath, result: result)
+    case "generateVideoPoster":
+      guard let sourcePath = call.arguments as? String else {
+        result(
+          FlutterError(
+            code: "invalid_arguments",
+            message: "Expected source file path as String.",
+            details: nil
+          )
+        )
+        return
+      }
+      generateVideoPoster(sourcePath: sourcePath, result: result)
+    case "clipboardHasImage":
+      result(UIPasteboard.general.hasImages)
+    case "readClipboardImage":
+      guard let imageData = Self.clipboardImageData(from: UIPasteboard.general) else {
+        result(nil)
+        return
+      }
+      result(FlutterStandardTypedData(bytes: imageData))
+    default:
+      result(FlutterMethodNotImplemented)
+    }
+  }
+
+  static func clipboardImageData(from pasteboard: UIPasteboard) -> Data? {
+    if let pngData = pasteboard.data(forPasteboardType: "public.png") {
+      return pngData
+    }
+    if let jpegData = pasteboard.data(forPasteboardType: "public.jpeg") {
+      return jpegData
+    }
+    for imageType in ["public.heic", "public.heif", "org.webmproject.webp", "com.compuserve.gif"] {
+      if let imageData = pasteboard.data(forPasteboardType: imageType) {
+        return imageData
+      }
+    }
+    guard let image = pasteboard.image else {
+      return nil
+    }
+    return image.pngData()
+  }
+
+  private func transcodeVideoToMp4(
+    sourcePath: String,
+    result: @escaping FlutterResult
+  ) {
+    let sourceURL = URL(fileURLWithPath: sourcePath)
+    let asset = AVURLAsset(url: sourceURL)
+
+    // Do not export the source asset directly. An iPhone video can carry GPS,
+    // spatial-video, and other data tracks even when its user-visible metadata
+    // is cleared. A fresh composition copies only one video and one audio
+    // track, so those private channels cannot reach the relay.
+    let composition = AVMutableComposition()
+    guard
+      let sourceVideo = asset.tracks(withMediaType: .video).first,
+      let destinationVideo = composition.addMutableTrack(
+        withMediaType: .video,
+        preferredTrackID: kCMPersistentTrackID_Invalid
+      )
+    else {
+      result(
+        FlutterError(
+          code: "transcode_failed",
+          message: "The selected file does not contain a video track.",
+          details: nil
+        )
+      )
+      return
+    }
+
+    do {
+      let sourceAudio = asset.tracks(withMediaType: .audio).first
+      let insertionTimes = Self.relativeTrackInsertionTimes(
+        videoStart: sourceVideo.timeRange.start,
+        audioStart: sourceAudio?.timeRange.start
+      )
+      try destinationVideo.insertTimeRange(
+        sourceVideo.timeRange,
+        of: sourceVideo,
+        at: insertionTimes.video
+      )
+      destinationVideo.preferredTransform = sourceVideo.preferredTransform
+
+      if
+        let sourceAudio,
+        let destinationAudio = composition.addMutableTrack(
+          withMediaType: .audio,
+          preferredTrackID: kCMPersistentTrackID_Invalid
+        )
+      {
+        try destinationAudio.insertTimeRange(
+          sourceAudio.timeRange,
+          of: sourceAudio,
+          at: insertionTimes.audio ?? .zero
+        )
+      }
+    } catch {
+      result(
+        FlutterError(
+          code: "transcode_failed",
+          message: error.localizedDescription,
+          details: nil
+        )
+      )
+      return
+    }
+
+    guard
+      let exportSession = AVAssetExportSession(
+        asset: composition,
+        // Passthrough preserves the source's HEVC codec and container
+        // metadata. Buzz accepts only canonical H.264/AAC MP4s with no
+        // metadata channels, so re-encode instead of copying the movie.
+        presetName: AVAssetExportPresetMediumQuality
+      )
+    else {
+      result(
+        FlutterError(
+          code: "transcode_failed",
+          message: "Unable to create export session.",
+          details: nil
+        )
+      )
+      return
+    }
+
+    let outputURL = FileManager.default.temporaryDirectory
+      .appendingPathComponent(UUID().uuidString)
+      .appendingPathExtension("mp4")
+
+    exportSession.outputURL = outputURL
+    exportSession.outputFileType = .mp4
+    exportSession.shouldOptimizeForNetworkUse = true
+    // `forSharing()` intentionally retains playback metadata. The relay
+    // rejects every descriptive metadata channel to avoid leaking location or
+    // other private information, so write no source metadata at all.
+    exportSession.metadata = []
+    exportSession.metadataItemFilter = nil
+
+    exportSession.exportAsynchronously {
+      switch exportSession.status {
+      case .completed:
+        do {
+          // AVFoundation writes a standard sample-dependency table (`sdtp`).
+          // Older Buzz relays mistook that playback-only box for metadata. Keep
+          // its size and payload in a `free` box so chunk offsets stay valid and
+          // uploads work before those relays receive the validator fix.
+          try Self.neutralizeSampleDependencyBoxes(at: outputURL)
+          result(outputURL.path)
+        } catch {
+          try? FileManager.default.removeItem(at: outputURL)
+          result(
+            FlutterError(
+              code: "transcode_failed",
+              message: "Unable to canonicalize transcoded video.",
+              details: error.localizedDescription
+            )
+          )
+        }
+      default:
+        let errorMessage =
+          exportSession.error?.localizedDescription
+          ?? "Video transcoding failed with status \(exportSession.status.rawValue)."
+        result(
+          FlutterError(
+            code: "transcode_failed",
+            message: errorMessage,
+            details: nil
+          )
+        )
+        // Clean up partial output on failure.
+        try? FileManager.default.removeItem(at: outputURL)
+      }
+    }
+  }
+
+  static func relativeTrackInsertionTimes(
+    videoStart: CMTime,
+    audioStart: CMTime?
+  ) -> (video: CMTime, audio: CMTime?) {
+    guard let audioStart else {
+      return (video: .zero, audio: nil)
+    }
+
+    let timelineStart =
+      CMTimeCompare(audioStart, videoStart) < 0 ? audioStart : videoStart
+    return (
+      video: CMTimeSubtract(videoStart, timelineStart),
+      audio: CMTimeSubtract(audioStart, timelineStart)
+    )
+  }
+
+  private func generateVideoPoster(
+    sourcePath: String,
+    result: @escaping FlutterResult
+  ) {
+    DispatchQueue.global(qos: .userInitiated).async {
+      let asset = AVURLAsset(url: URL(fileURLWithPath: sourcePath))
+      let generator = AVAssetImageGenerator(asset: asset)
+      generator.appliesPreferredTrackTransform = true
+      generator.maximumSize = CGSize(width: 720, height: 720)
+      generator.requestedTimeToleranceBefore = .positiveInfinity
+      generator.requestedTimeToleranceAfter = .positiveInfinity
+
+      do {
+        let durationSeconds = CMTimeGetSeconds(asset.duration)
+        let middleTime = durationSeconds.isFinite && durationSeconds > 0
+          ? min(durationSeconds / 2, 1)
+          : 0
+        let candidateTimes = [0, 0.1, middleTime]
+        var posterImage: CGImage?
+        var lastError: Error?
+
+        for seconds in candidateTimes {
+          do {
+            posterImage = try generator.copyCGImage(
+              at: CMTime(seconds: seconds, preferredTimescale: 600),
+              actualTime: nil
+            )
+            if posterImage != nil { break }
+          } catch {
+            lastError = error
+          }
+        }
+
+        guard let posterImage else {
+          throw lastError ?? NSError(
+            domain: "BuzzVideoPoster",
+            code: 1,
+            userInfo: [NSLocalizedDescriptionKey: "Unable to decode a video frame."]
+          )
+        }
+        guard let jpegData = try MediaSanitizer.encodeJpeg(UIImage(cgImage: posterImage)) else {
+          throw NSError(
+            domain: "BuzzVideoPoster",
+            code: 2,
+            userInfo: [NSLocalizedDescriptionKey: "Unable to encode video poster."]
+          )
+        }
+        DispatchQueue.main.async {
+          result(FlutterStandardTypedData(bytes: jpegData))
+        }
+      } catch {
+        DispatchQueue.main.async {
+          result(
+            FlutterError(
+              code: "poster_failed",
+              message: "Unable to create a video preview.",
+              details: error.localizedDescription
+            )
+          )
+        }
+      }
+    }
+  }
+
+  private static func neutralizeSampleDependencyBoxes(at url: URL) throws {
+    var data = try Data(contentsOf: url)
+    try neutralizeSampleDependencyBoxes(in: &data, start: 0, end: data.count)
+    try data.write(to: url, options: .atomic)
+  }
+
+  private static func neutralizeSampleDependencyBoxes(
+    in data: inout Data,
+    start: Int,
+    end: Int
+  ) throws {
+    let containers: Set<[UInt8]> = [
+      Array("moov".utf8), Array("trak".utf8), Array("mdia".utf8),
+      Array("minf".utf8), Array("stbl".utf8), Array("edts".utf8),
+      Array("dinf".utf8), Array("sinf".utf8), Array("schi".utf8),
+    ]
+    let sampleDependencyType = Array("sdtp".utf8)
+    let freeType = Array("free".utf8)
+    var offset = start
+
+    while offset < end {
+      guard end - offset >= 8 else { throw invalidMp4BoxError() }
+      let compactSize = Int(readBigEndianUInt32(data, at: offset))
+      var headerSize = 8
+      let boxSize: Int
+      if compactSize == 1 {
+        guard end - offset >= 16 else { throw invalidMp4BoxError() }
+        let extendedSize = readBigEndianUInt64(data, at: offset + 8)
+        guard extendedSize <= UInt64(Int.max) else { throw invalidMp4BoxError() }
+        boxSize = Int(extendedSize)
+        headerSize = 16
+      } else if compactSize == 0 {
+        boxSize = end - offset
+      } else {
+        boxSize = compactSize
+      }
+
+      guard boxSize >= headerSize, offset + boxSize <= end else {
+        throw invalidMp4BoxError()
+      }
+      let type = Array(data[(offset + 4)..<(offset + 8)])
+      if type == sampleDependencyType {
+        data.replaceSubrange((offset + 4)..<(offset + 8), with: freeType)
+      } else if containers.contains(type) {
+        try neutralizeSampleDependencyBoxes(
+          in: &data,
+          start: offset + headerSize,
+          end: offset + boxSize
+        )
+      }
+      offset += boxSize
+    }
+  }
+
+  private static func readBigEndianUInt32(_ data: Data, at offset: Int) -> UInt32 {
+    data[offset..<(offset + 4)].reduce(0) { ($0 << 8) | UInt32($1) }
+  }
+
+  private static func readBigEndianUInt64(_ data: Data, at offset: Int) -> UInt64 {
+    data[offset..<(offset + 8)].reduce(0) { ($0 << 8) | UInt64($1) }
+  }
+
+  private static func invalidMp4BoxError() -> NSError {
+    NSError(
+      domain: "BuzzVideoTranscode",
+      code: 1,
+      userInfo: [NSLocalizedDescriptionKey: "Invalid MP4 box structure."]
+    )
+  }
+}
@@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
@@ -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"
+  }
+}
@@ -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.
@@ -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="0" green="0" blue="0" 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="168"/>
+    </resources>
+</document>
@@ -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>
@@ -0,0 +1,54 @@
+import Flutter
+import UIKit
+
+final class ConcentricSheetSurfaceFactory: NSObject, FlutterPlatformViewFactory {
+  func createArgsCodec() -> FlutterMessageCodec & NSObjectProtocol {
+    FlutterStandardMessageCodec.sharedInstance()
+  }
+
+  func create(
+    withFrame frame: CGRect,
+    viewIdentifier viewId: Int64,
+    arguments args: Any?
+  ) -> FlutterPlatformView {
+    ConcentricSheetSurfacePlatformView(frame: frame, arguments: args)
+  }
+}
+
+final class ConcentricSheetSurfacePlatformView: NSObject, FlutterPlatformView {
+  private let surfaceView: UIView
+
+  init(frame: CGRect, arguments args: Any?) {
+    let arguments = args as? [String: Any]
+    let colorValue = (arguments?["color"] as? NSNumber)?.uint32Value ?? 0xFFFFFFFF
+    let minimumRadius = (arguments?["minimumRadius"] as? NSNumber)?.doubleValue ?? 24
+
+    surfaceView = UIView(frame: frame)
+    surfaceView.isOpaque = true
+    surfaceView.backgroundColor = Self.color(from: colorValue)
+    surfaceView.clipsToBounds = true
+    surfaceView.layer.cornerCurve = .continuous
+
+    if #available(iOS 26.0, *) {
+      surfaceView.cornerConfiguration = .uniformCorners(
+        radius: .containerConcentric(minimum: minimumRadius)
+      )
+    } else {
+      surfaceView.layer.cornerRadius = minimumRadius
+    }
+
+    super.init()
+  }
+
+  func view() -> UIView {
+    surfaceView
+  }
+
+  private static func color(from value: UInt32) -> UIColor {
+    let alpha = CGFloat((value >> 24) & 0xFF) / 255
+    let red = CGFloat((value >> 16) & 0xFF) / 255
+    let green = CGFloat((value >> 8) & 0xFF) / 255
+    let blue = CGFloat(value & 0xFF) / 255
+    return UIColor(red: red, green: green, blue: blue, alpha: alpha)
+  }
+}
@@ -0,0 +1,88 @@
+<?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>$(APP_DISPLAY_NAME)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>Buzz</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(FLUTTER_BUILD_NAME)</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleURLTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>CFBundleURLName</key>
+			<string>com.buzz.deeplink</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>buzz</string>
+			</array>
+		</dict>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>FlutterDeepLinkingEnabled</key>
+	<false/>
+	<key>ITSAppUsesNonExemptEncryption</key>
+	<false/>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>NSCameraUsageDescription</key>
+	<string>Buzz needs camera access so you can take photos to attach to messages and scan QR codes for device pairing.</string>
+	<key>NSPhotoLibraryUsageDescription</key>
+	<string>Buzz needs photo library access so you can attach images to messages.</string>
+	<key>NSPhotoLibraryAddUsageDescription</key>
+	<string>Buzz needs permission to save images to your photo library.</string>
+	<key>PHPhotoLibraryPreventAutomaticLimitedAccessAlert</key>
+	<true/>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneClassName</key>
+					<string>UIWindowScene</string>
+					<key>UISceneConfigurationName</key>
+					<string>flutter</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(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>
+</dict>
+</plist>
@@ -0,0 +1,237 @@
+import Flutter
+import PhotosUI
+import UIKit
+import UniformTypeIdentifiers
+
+final class InlinePhotoPickerFactory: NSObject, FlutterPlatformViewFactory {
+  private let messenger: FlutterBinaryMessenger
+  private weak var parentViewController: UIViewController?
+
+  init(
+    messenger: FlutterBinaryMessenger,
+    parentViewController: UIViewController?
+  ) {
+    self.messenger = messenger
+    self.parentViewController = parentViewController
+    super.init()
+  }
+
+  func create(
+    withFrame frame: CGRect,
+    viewIdentifier viewId: Int64,
+    arguments args: Any?
+  ) -> FlutterPlatformView {
+    InlinePhotoPickerPlatformView(
+      frame: frame,
+      viewIdentifier: viewId,
+      messenger: messenger,
+      parentViewController: parentViewController
+    )
+  }
+}
+
+final class InlinePhotoPickerPlatformView: NSObject, FlutterPlatformView {
+  private let containerView: UIView
+  private let channel: FlutterMethodChannel
+  private weak var parentViewController: UIViewController?
+  private var pickerViewController: PHPickerViewController?
+  private var selectionGeneration = 0
+  private var selectionTask: Task<Void, Never>?
+  private var selectedTemporaryPaths: [String] = []
+
+  init(
+    frame: CGRect,
+    viewIdentifier viewId: Int64,
+    messenger: FlutterBinaryMessenger,
+    parentViewController: UIViewController?
+  ) {
+    containerView = UIView(frame: frame)
+    channel = FlutterMethodChannel(
+      name: "buzz/inline_photo_picker/\(viewId)",
+      binaryMessenger: messenger
+    )
+    self.parentViewController = parentViewController
+    super.init()
+
+    channel.setMethodCallHandler { [weak self] call, result in
+      guard call.method == "claimSelection" else {
+        result(FlutterMethodNotImplemented)
+        return
+      }
+      let paths = call.arguments as? [String] ?? []
+      guard let self, paths == self.selectedTemporaryPaths else {
+        result(false)
+        return
+      }
+      self.selectedTemporaryPaths = []
+      result(true)
+    }
+
+    containerView.backgroundColor = .clear
+    containerView.clipsToBounds = true
+    if #available(iOS 17.0, *) {
+      installPicker()
+    }
+  }
+
+  deinit {
+    selectionTask?.cancel()
+    Self.removeTemporaryFiles(selectedTemporaryPaths)
+    channel.setMethodCallHandler(nil)
+    pickerViewController?.willMove(toParent: nil)
+    pickerViewController?.view.removeFromSuperview()
+    pickerViewController?.removeFromParent()
+  }
+
+  func view() -> UIView {
+    containerView
+  }
+
+  @available(iOS 17.0, *)
+  private func installPicker() {
+    var configuration = PHPickerConfiguration(photoLibrary: .shared())
+    configuration.filter = .images
+    configuration.selectionLimit = 0
+    configuration.selection = .continuousAndOrdered
+    configuration.preferredAssetRepresentationMode = .compatible
+    configuration.disabledCapabilities = [
+      .search,
+      .stagingArea,
+      .collectionNavigation,
+      .selectionActions,
+    ]
+    configuration.edgesWithoutContentMargins = .all
+
+    let picker = PHPickerViewController(configuration: configuration)
+    picker.delegate = self
+    picker.view.backgroundColor = .clear
+    picker.view.translatesAutoresizingMaskIntoConstraints = false
+
+    if let parentViewController {
+      parentViewController.addChild(picker)
+    }
+    containerView.addSubview(picker.view)
+    NSLayoutConstraint.activate([
+      picker.view.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
+      picker.view.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
+      picker.view.topAnchor.constraint(equalTo: containerView.topAnchor),
+      picker.view.bottomAnchor.constraint(equalTo: containerView.bottomAnchor),
+    ])
+    if parentViewController != nil {
+      picker.didMove(toParent: parentViewController)
+    }
+    pickerViewController = picker
+    containerView.layoutIfNeeded()
+  }
+
+  private func exportPickerResult(_ result: PHPickerResult) async throws -> String {
+    let provider = result.itemProvider
+    guard
+      let typeIdentifier = provider.registeredTypeIdentifiers.first(where: {
+        guard let type = UTType($0) else { return false }
+        return type.conforms(to: .image)
+      })
+    else {
+      throw InlinePhotoPickerError.unsupportedImage
+    }
+
+    return try await withCheckedThrowingContinuation { continuation in
+      provider.loadFileRepresentation(forTypeIdentifier: typeIdentifier) {
+        sourceURL,
+        error in
+        if let error {
+          continuation.resume(throwing: error)
+          return
+        }
+        guard let sourceURL else {
+          continuation.resume(throwing: InlinePhotoPickerError.missingFile)
+          return
+        }
+
+        do {
+          let fileExtension =
+            sourceURL.pathExtension.isEmpty
+            ? (UTType(typeIdentifier)?.preferredFilenameExtension ?? "jpg")
+            : sourceURL.pathExtension
+          let destinationURL = FileManager.default.temporaryDirectory
+            .appendingPathComponent(UUID().uuidString)
+            .appendingPathExtension(fileExtension)
+          try FileManager.default.copyItem(
+            at: sourceURL,
+            to: destinationURL
+          )
+          continuation.resume(returning: destinationURL.path)
+        } catch {
+          continuation.resume(throwing: error)
+        }
+      }
+    }
+  }
+
+  private static func removeTemporaryFiles(_ paths: [String]) {
+    for path in paths where !path.isEmpty {
+      try? FileManager.default.removeItem(atPath: path)
+    }
+  }
+}
+
+extension InlinePhotoPickerPlatformView: PHPickerViewControllerDelegate {
+  func picker(
+    _ picker: PHPickerViewController,
+    didFinishPicking results: [PHPickerResult]
+  ) {
+    selectionGeneration += 1
+    let generation = selectionGeneration
+    selectionTask?.cancel()
+    selectionTask = nil
+    Self.removeTemporaryFiles(selectedTemporaryPaths)
+    selectedTemporaryPaths = []
+    channel.invokeMethod(
+      "selectionCountChanged",
+      arguments: results.count
+    )
+
+    guard !results.isEmpty else {
+      channel.invokeMethod("selectionDidChange", arguments: [String]())
+      return
+    }
+
+    selectionTask = Task { [weak self] in
+      guard let self else { return }
+      var paths: [String] = []
+      do {
+        for result in results {
+          try Task.checkCancellation()
+          paths.append(try await self.exportPickerResult(result))
+        }
+        try Task.checkCancellation()
+        await MainActor.run {
+          guard generation == self.selectionGeneration else {
+            Self.removeTemporaryFiles(paths)
+            return
+          }
+          self.selectedTemporaryPaths = paths
+          self.selectionTask = nil
+          self.channel.invokeMethod("selectionDidChange", arguments: paths)
+        }
+      } catch is CancellationError {
+        Self.removeTemporaryFiles(paths)
+      } catch {
+        Self.removeTemporaryFiles(paths)
+        await MainActor.run {
+          guard generation == self.selectionGeneration else { return }
+          self.selectionTask = nil
+          self.channel.invokeMethod(
+            "didFail",
+            arguments: "Unable to prepare the selected photos."
+          )
+        }
+      }
+    }
+  }
+}
+
+private enum InlinePhotoPickerError: Error {
+  case missingFile
+  case unsupportedImage
+}
@@ -0,0 +1,199 @@
+import Foundation
+import UIKit
+
+private enum MediaSanitizationError: Error {
+  case invalidPng
+  case invalidJpeg
+}
+
+enum MediaSanitizer {
+  private static let pngSignature = Data([0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A])
+  private static let allowedPngAncillaryChunks: Set<String> = [
+    "cHRM", "gAMA", "sBIT", "sRGB", "bKGD", "hIST", "tRNS", "sPLT", "acTL", "fcTL", "fdAT",
+  ]
+
+  static func sanitizeImage(_ image: UIImage, mimeType: String) throws -> Data? {
+    switch mimeType {
+    case "image/png":
+      guard let image = renderInSRGB(image), let encoded = image.pngData() else { return nil }
+      return try scrubPng(encoded)
+    case "image/jpeg":
+      return try encodeJpeg(image)
+    case "image/webp":
+      guard let image = renderInSRGB(image), let encoded = image.pngData() else { return nil }
+      return try scrubPng(encoded)
+    default:
+      return nil
+    }
+  }
+
+  static func encodeJpeg(_ image: UIImage) throws -> Data? {
+    guard
+      let image = renderInSRGB(image),
+      let encoded = image.jpegData(compressionQuality: 1.0)
+    else {
+      return nil
+    }
+    return try scrubJpeg(encoded)
+  }
+
+  private static func renderInSRGB(_ image: UIImage) -> UIImage? {
+    guard image.size.width > 0, image.size.height > 0 else { return nil }
+    let format = UIGraphicsImageRendererFormat()
+    format.scale = image.scale
+    format.opaque = false
+    format.preferredRange = .standard
+    return UIGraphicsImageRenderer(size: image.size, format: format).image { _ in
+      image.draw(in: CGRect(origin: .zero, size: image.size))
+    }
+  }
+
+  static func scrubPng(_ data: Data) throws -> Data {
+    let data = Data(data)
+    guard data.count >= pngSignature.count, data.prefix(pngSignature.count) == pngSignature else {
+      throw MediaSanitizationError.invalidPng
+    }
+
+    var output = pngSignature
+    var offset = pngSignature.count
+    while offset < data.count {
+      guard data.count - offset >= 12 else {
+        throw MediaSanitizationError.invalidPng
+      }
+
+      let payloadLengthValue = try readUInt32BigEndian(data, at: offset)
+      guard
+        let payloadLength = Int(exactly: payloadLengthValue),
+        payloadLength <= data.count - offset - 12
+      else {
+        throw MediaSanitizationError.invalidPng
+      }
+      let chunkLength = payloadLength + 12
+      let typeStart = offset + 4
+      let typeEnd = typeStart + 4
+      let typeBytes = data[typeStart..<typeEnd]
+      guard let type = String(bytes: typeBytes, encoding: .ascii) else {
+        throw MediaSanitizationError.invalidPng
+      }
+
+      let isAncillary = typeBytes[typeBytes.startIndex] & 0x20 != 0
+      if !isAncillary || allowedPngAncillaryChunks.contains(type) {
+        output.append(data[offset..<(offset + chunkLength)])
+      }
+
+      offset += chunkLength
+      if type == "IEND" {
+        return output
+      }
+    }
+
+    throw MediaSanitizationError.invalidPng
+  }
+
+  static func scrubJpeg(_ data: Data) throws -> Data {
+    let data = Data(data)
+    guard data.count >= 2, data[0] == 0xFF, data[1] == 0xD8 else {
+      throw MediaSanitizationError.invalidJpeg
+    }
+
+    var output = Data([0xFF, 0xD8])
+    var offset = 2
+    var inScan = false
+    while offset < data.count {
+      if inScan, data[offset] != 0xFF {
+        let nextMarker = data[offset...].firstIndex(of: 0xFF) ?? data.endIndex
+        output.append(data[offset..<nextMarker])
+        offset = nextMarker
+        continue
+      }
+      guard data[offset] == 0xFF else {
+        throw MediaSanitizationError.invalidJpeg
+      }
+
+      let markerStart = offset
+      while offset < data.count, data[offset] == 0xFF {
+        offset += 1
+      }
+      guard offset < data.count else {
+        throw MediaSanitizationError.invalidJpeg
+      }
+
+      let marker = data[offset]
+      offset += 1
+      if inScan, marker == 0x00 {
+        output.append(data[markerStart..<offset])
+        continue
+      }
+      if (0xD0...0xD7).contains(marker) || marker == 0x01 {
+        output.append(data[markerStart..<offset])
+        continue
+      }
+      if marker == 0xD9 {
+        output.append(data[markerStart..<offset])
+        return output
+      }
+      guard marker != 0xD8, data.count - offset >= 2 else {
+        throw MediaSanitizationError.invalidJpeg
+      }
+
+      let segmentLength = try readUInt16BigEndian(data, at: offset)
+      guard segmentLength >= 2, Int(segmentLength) <= data.count - offset else {
+        throw MediaSanitizationError.invalidJpeg
+      }
+      let segmentEnd = offset + Int(segmentLength)
+      if shouldKeepJpegSegment(marker, data: data, payload: (offset + 2)..<segmentEnd) {
+        output.append(data[markerStart..<segmentEnd])
+      }
+
+      offset = segmentEnd
+      inScan = marker == 0xDA
+    }
+
+    throw MediaSanitizationError.invalidJpeg
+  }
+
+  private static func shouldKeepJpegSegment(
+    _ marker: UInt8,
+    data: Data,
+    payload: Range<Int>
+  ) -> Bool {
+    switch marker {
+    case 0xE0:
+      guard
+        payload.count >= 14,
+        data[payload.lowerBound..<(payload.lowerBound + 5)].elementsEqual([
+          0x4A, 0x46, 0x49, 0x46, 0x00,
+        ])
+      else {
+        return false
+      }
+      let thumbnailWidth = Int(data[payload.lowerBound + 12])
+      let thumbnailHeight = Int(data[payload.lowerBound + 13])
+      return payload.count == 14 + 3 * thumbnailWidth * thumbnailHeight
+    case 0xEE:
+      return payload.count == 12
+        && data[payload.lowerBound..<(payload.lowerBound + 5)].elementsEqual([
+          0x41, 0x64, 0x6F, 0x62, 0x65,
+        ])
+    case 0xE1...0xED, 0xEF, 0xFE:
+      return false
+    default:
+      return true
+    }
+  }
+
+  private static func readUInt16BigEndian(_ data: Data, at offset: Int) throws -> UInt16 {
+    guard data.count - offset >= 2 else {
+      throw MediaSanitizationError.invalidJpeg
+    }
+    return UInt16(data[offset]) << 8 | UInt16(data[offset + 1])
+  }
+
+  private static func readUInt32BigEndian(_ data: Data, at offset: Int) throws -> UInt32 {
+    guard data.count - offset >= 4 else {
+      throw MediaSanitizationError.invalidPng
+    }
+    return UInt32(data[offset]) << 24 | UInt32(data[offset + 1]) << 16
+      | UInt32(data[offset + 2]) << 8 | UInt32(data[offset + 3])
+  }
+}
@@ -0,0 +1,431 @@
+import CoreText
+import Flutter
+import UIKit
+
+enum NativeAttachmentExpandedSurfaceBehavior {
+  @MainActor
+  static func dismissKeyboard(in window: UIWindow?) {
+    window?.endEditing(true)
+  }
+
+  static func keyboardOverlap(
+    containerBounds: CGRect,
+    keyboardLayoutFrame: CGRect
+  ) -> CGFloat {
+    guard
+      !keyboardLayoutFrame.isNull,
+      !keyboardLayoutFrame.isInfinite,
+      keyboardLayoutFrame.minY < containerBounds.maxY
+    else {
+      return 0
+    }
+    return max(0, containerBounds.maxY - keyboardLayoutFrame.minY)
+  }
+}
+
+enum NativeAttachmentPopoverAnchorLayout {
+  static let expandedVerticalOffset: CGFloat = 40
+
+  static func sourceRect(
+    anchorBounds: CGRect,
+    keyboardDismissalOffset: CGFloat,
+    isExpanded: Bool
+  ) -> CGRect {
+    anchorBounds.offsetBy(
+      dx: 0,
+      dy: keyboardDismissalOffset
+        + (isExpanded ? expandedVerticalOffset : 0)
+    )
+  }
+}
+
+enum NativeAttachmentPopoverPresentationLayout {
+  static func keyboardDismissalOffset(
+    sourceRect: CGRect,
+    containerBounds: CGRect,
+    safeAreaInsets: UIEdgeInsets,
+    keyboardLayoutFrame: CGRect,
+    menuHeight: CGFloat
+  ) -> CGFloat {
+    let keyboardOverlap =
+      NativeAttachmentExpandedSurfaceBehavior.keyboardOverlap(
+        containerBounds: containerBounds,
+        keyboardLayoutFrame: keyboardLayoutFrame
+      )
+    guard keyboardOverlap > 0 else { return 0 }
+
+    let availableHeight =
+      sourceRect.minY - (containerBounds.minY + safeAreaInsets.top)
+    return availableHeight >= menuHeight ? 0 : keyboardOverlap
+  }
+
+  static func sourceRect(
+    _ sourceRect: CGRect,
+    keyboardDismissalOffset: CGFloat
+  ) -> CGRect {
+    sourceRect.offsetBy(dx: 0, dy: keyboardDismissalOffset)
+  }
+}
+
+final class NativeAttachmentPopoverCoordinator: NSObject {
+  private let channel: FlutterMethodChannel
+  private weak var parentViewController: UIViewController?
+  private weak var presentedController: UIViewController?
+  private weak var sourceAnchorView: UIView?
+
+  init(
+    messenger: FlutterBinaryMessenger,
+    parentViewController: UIViewController?
+  ) {
+    channel = FlutterMethodChannel(
+      name: "buzz/native_attachment_popover",
+      binaryMessenger: messenger
+    )
+    self.parentViewController = parentViewController
+    super.init()
+
+    channel.setMethodCallHandler { [weak self] call, result in
+      self?.handle(call, result: result)
+    }
+  }
+
+  private func handle(
+    _ call: FlutterMethodCall,
+    result: @escaping FlutterResult
+  ) {
+    switch call.method {
+    case "isSupported":
+      if #available(iOS 26.0, *) {
+        result(true)
+      } else {
+        result(false)
+      }
+    case "present":
+      guard
+        let arguments = call.arguments as? [String: Any],
+        let x = arguments["x"] as? NSNumber,
+        let y = arguments["y"] as? NSNumber,
+        let width = arguments["width"] as? NSNumber,
+        let height = arguments["height"] as? NSNumber
+      else {
+        result(
+          FlutterError(
+            code: "invalid_arguments",
+            message: "Expected the attachment trigger bounds.",
+            details: nil
+          )
+        )
+        return
+      }
+
+      let sourceRect = CGRect(
+        x: CGFloat(truncating: x),
+        y: CGFloat(truncating: y),
+        width: CGFloat(truncating: width),
+        height: CGFloat(truncating: height)
+      )
+      DispatchQueue.main.async { [weak self] in
+        result(self?.presentPopover(sourceRect: sourceRect) ?? false)
+      }
+    case "dismiss":
+      DispatchQueue.main.async { [weak self] in
+        if #available(iOS 26.0, *),
+          let controller =
+            self?.presentedController
+            as? NativeAttachmentPopoverViewController
+        {
+          controller.dismissAndNotify()
+        } else {
+          self?.presentedController?.dismiss(animated: true)
+        }
+        result(nil)
+      }
+    default:
+      result(FlutterMethodNotImplemented)
+    }
+  }
+
+  @MainActor
+  private func presentPopover(sourceRect: CGRect) -> Bool {
+    guard #available(iOS 26.0, *) else { return false }
+    guard presentedController == nil else { return true }
+    let rootViewController =
+      parentViewController ?? activeWindowRootViewController()
+    guard let presenter = topViewController(from: rootViewController) else {
+      return false
+    }
+
+    let sourceView = presenter.view
+    var convertedRect: CGRect
+    if let window = sourceView?.window {
+      convertedRect = sourceView?.convert(sourceRect, from: window) ?? sourceRect
+    } else {
+      convertedRect = sourceRect
+    }
+
+    if let sourceView {
+      let keyboardDismissalOffset =
+        NativeAttachmentPopoverPresentationLayout.keyboardDismissalOffset(
+          sourceRect: convertedRect,
+          containerBounds: sourceView.bounds,
+          safeAreaInsets: sourceView.safeAreaInsets,
+          keyboardLayoutFrame: sourceView.keyboardLayoutGuide.layoutFrame,
+          menuHeight: NativeAttachmentMenuLayout.size(
+            compatibleWith: sourceView.traitCollection
+          ).height
+        )
+      if keyboardDismissalOffset > 0 {
+        NativeAttachmentExpandedSurfaceBehavior.dismissKeyboard(
+          in: sourceView.window
+        )
+        convertedRect =
+          NativeAttachmentPopoverPresentationLayout.sourceRect(
+            convertedRect,
+            keyboardDismissalOffset: keyboardDismissalOffset
+          )
+      }
+    }
+
+    let anchorView = makeSourceAnchor(frame: convertedRect)
+    sourceView?.addSubview(anchorView)
+    sourceAnchorView = anchorView
+
+    let availableWidth = max(
+      320,
+      min(
+        (sourceView?.bounds.width ?? UIScreen.main.bounds.width) - 24,
+        430
+      )
+    )
+    let controller = NativeAttachmentPopoverViewController(
+      channel: channel,
+      expandedWidth: availableWidth
+    )
+    controller.modalPresentationStyle = .popover
+    controller.preferredTransition = .zoom { [weak anchorView] _ in
+      anchorView
+    }
+    controller.onDismiss = { [weak self] in
+      self?.presentedController = nil
+      self?.sourceAnchorView?.removeFromSuperview()
+      self?.channel.invokeMethod("dismissed", arguments: nil)
+    }
+
+    guard let popover = controller.popoverPresentationController else {
+      anchorView.removeFromSuperview()
+      return false
+    }
+    popover.sourceView = anchorView
+    popover.sourceRect = anchorView.bounds
+    popover.permittedArrowDirections = [.down]
+    popover.backgroundColor = .clear
+    popover.delegate = controller
+
+    presentedController = controller
+    presenter.present(controller, animated: true)
+    return true
+  }
+
+  @MainActor
+  private func makeSourceAnchor(frame: CGRect) -> UIView {
+    let anchor = UIView(frame: frame)
+    anchor.isUserInteractionEnabled = false
+    anchor.accessibilityElementsHidden = true
+    anchor.backgroundColor = .clear
+    anchor.layer.cornerRadius = min(frame.width, frame.height) / 2
+    anchor.layer.cornerCurve = .continuous
+    return anchor
+  }
+
+  @MainActor
+  private func activeWindowRootViewController() -> UIViewController? {
+    UIApplication.shared.connectedScenes
+      .compactMap { $0 as? UIWindowScene }
+      .filter { $0.activationState == .foregroundActive }
+      .flatMap(\.windows)
+      .first(where: \.isKeyWindow)?
+      .rootViewController
+  }
+
+  @MainActor
+  private func topViewController(
+    from viewController: UIViewController?
+  ) -> UIViewController? {
+    if let presented = viewController?.presentedViewController {
+      return topViewController(from: presented)
+    }
+    if let navigation = viewController as? UINavigationController {
+      return topViewController(from: navigation.visibleViewController)
+    }
+    if let tab = viewController as? UITabBarController {
+      return topViewController(from: tab.selectedViewController)
+    }
+    return viewController
+  }
+}
+
+enum NativeAttachmentMenuLayout {
+  static let itemCount: CGFloat = 4
+  static let contentPadding: CGFloat = 16
+  static let minimumItemHeight: CGFloat = 52
+  static let itemSpacing: CGFloat = 8
+  static let itemVerticalPadding: CGFloat = 8
+  static let maximumHeight: CGFloat = 372
+  static let width: CGFloat = 216
+  static let labelTextStyle: UIFont.TextStyle = .title3
+
+  static func itemHeight(
+    compatibleWith traitCollection: UITraitCollection
+  ) -> CGFloat {
+    let labelHeight = NativeAttachmentMenuTypography.font(
+      forTextStyle: labelTextStyle,
+      compatibleWith: traitCollection
+    ).lineHeight
+    return max(
+      minimumItemHeight,
+      ceil(labelHeight + (itemVerticalPadding * 2))
+    )
+  }
+
+  static func itemsHeight(
+    compatibleWith traitCollection: UITraitCollection
+  ) -> CGFloat {
+    (itemHeight(compatibleWith: traitCollection) * itemCount)
+      + (itemSpacing * (itemCount - 1))
+  }
+
+  static func contentHeight(
+    compatibleWith traitCollection: UITraitCollection
+  ) -> CGFloat {
+    (contentPadding * 2) + itemsHeight(compatibleWith: traitCollection)
+  }
+
+  static func size(
+    compatibleWith traitCollection: UITraitCollection,
+    maximumHeight: CGFloat = NativeAttachmentMenuLayout.maximumHeight
+  ) -> CGSize {
+    CGSize(
+      width: width,
+      height: min(
+        contentHeight(compatibleWith: traitCollection),
+        maximumHeight
+      )
+    )
+  }
+}
+
+enum NativeAttachmentMenuTypography {
+  static let interPostScriptName = "InterVariable"
+
+  private static let registeredInter: Bool = {
+    let fontURL = Bundle.main.bundleURL
+      .appendingPathComponent("Frameworks")
+      .appendingPathComponent("App.framework")
+      .appendingPathComponent("flutter_assets")
+      .appendingPathComponent("assets")
+      .appendingPathComponent("fonts")
+      .appendingPathComponent("InterVariable.ttf")
+    guard FileManager.default.fileExists(atPath: fontURL.path) else {
+      return false
+    }
+    return CTFontManagerRegisterFontsForURL(
+      fontURL as CFURL,
+      .process,
+      nil
+    )
+  }()
+
+  static func font(
+    forTextStyle textStyle: UIFont.TextStyle,
+    compatibleWith traitCollection: UITraitCollection? = nil
+  ) -> UIFont {
+    _ = registeredInter
+    let scaledPointSize = UIFontMetrics(forTextStyle: textStyle).scaledValue(
+      for: 20,
+      compatibleWith: traitCollection
+    )
+    let preferredFont = UIFont.preferredFont(
+      forTextStyle: textStyle,
+      compatibleWith: traitCollection
+    )
+    guard
+      let interFont = UIFont(
+        name: interPostScriptName,
+        size: scaledPointSize
+      )
+    else {
+      return preferredFont
+    }
+    return interFont
+  }
+}
+
+enum NativeAttachmentPopoverStyle {
+  static let cornerRadius: CGFloat = 20
+  static let shadowOpacity: Float = 0.18
+  static let shadowRadius: CGFloat = 12
+  static let shadowOffset = CGSize(width: 0, height: 6)
+  static let borderWidth: CGFloat = 1
+}
+
+func makeNativeAttachmentMenuButton(
+  title: String,
+  symbol: String,
+  action: @escaping () -> Void
+) -> UIButton {
+  let button = UIButton(
+    primaryAction: UIAction { _ in
+      UISelectionFeedbackGenerator().selectionChanged()
+      action()
+    }
+  )
+  button.accessibilityLabel = title
+
+  let symbolConfiguration = UIImage.SymbolConfiguration(
+    pointSize: 18,
+    weight: .regular
+  )
+  let iconView = UIImageView(
+    image: UIImage(
+      systemName: symbol,
+      withConfiguration: symbolConfiguration
+    )
+  )
+  iconView.tintColor = .label
+  iconView.contentMode = .center
+  iconView.translatesAutoresizingMaskIntoConstraints = false
+
+  let titleLabel = UILabel()
+  titleLabel.text = title
+  titleLabel.textColor = .label
+  titleLabel.font = NativeAttachmentMenuTypography.font(
+    forTextStyle: NativeAttachmentMenuLayout.labelTextStyle
+  )
+  titleLabel.adjustsFontForContentSizeCategory = true
+  titleLabel.textAlignment = .left
+  titleLabel.translatesAutoresizingMaskIntoConstraints = false
+
+  button.addSubview(iconView)
+  button.addSubview(titleLabel)
+  NSLayoutConstraint.activate([
+    iconView.leadingAnchor.constraint(
+      equalTo: button.leadingAnchor,
+      constant: 8
+    ),
+    iconView.centerYAnchor.constraint(equalTo: button.centerYAnchor),
+    iconView.widthAnchor.constraint(equalToConstant: 26),
+    titleLabel.leadingAnchor.constraint(
+      equalTo: iconView.trailingAnchor,
+      constant: 12
+    ),
+    titleLabel.trailingAnchor.constraint(
+      equalTo: button.trailingAnchor,
+      constant: -8
+    ),
+    titleLabel.centerYAnchor.constraint(equalTo: button.centerYAnchor),
+  ])
+  button.configurationUpdateHandler = { button in
+    button.alpha = button.isHighlighted ? 0.62 : 1
+  }
+  return button
+}
@@ -0,0 +1 @@
+#import "GeneratedPluginRegistrant.h"
@@ -0,0 +1,6 @@
+import Flutter
+import UIKit
+
+class SceneDelegate: FlutterSceneDelegate {
+
+}
@@ -0,0 +1,632 @@
+import AVFoundation
+import Flutter
+import UIKit
+import XCTest
+
+@testable import Buzz
+
+class RunnerTests: XCTestCase {
+
+  func testRelativeTrackInsertionTimesPreserveAudioDelay() {
+    let times = AppDelegate.relativeTrackInsertionTimes(
+      videoStart: CMTime(seconds: 1, preferredTimescale: 600),
+      audioStart: CMTime(seconds: 1.5, preferredTimescale: 600)
+    )
+
+    XCTAssertEqual(CMTimeCompare(times.video, .zero), 0)
+    XCTAssertEqual(
+      CMTimeCompare(
+        times.audio ?? .invalid,
+        CMTime(seconds: 0.5, preferredTimescale: 600)
+      ),
+      0
+    )
+  }
+
+  func testRelativeTrackInsertionTimesPreserveVideoDelay() {
+    let times = AppDelegate.relativeTrackInsertionTimes(
+      videoStart: CMTime(seconds: 2, preferredTimescale: 600),
+      audioStart: CMTime(seconds: 1, preferredTimescale: 600)
+    )
+
+    XCTAssertEqual(
+      CMTimeCompare(
+        times.video,
+        CMTime(seconds: 1, preferredTimescale: 600)
+      ),
+      0
+    )
+    XCTAssertEqual(CMTimeCompare(times.audio ?? .invalid, .zero), 0)
+  }
+
+  func testRelativeTrackInsertionTimesZeroBasesVideoWithoutAudio() {
+    let times = AppDelegate.relativeTrackInsertionTimes(
+      videoStart: CMTime(seconds: 3, preferredTimescale: 600),
+      audioStart: nil
+    )
+
+    XCTAssertEqual(CMTimeCompare(times.video, .zero), 0)
+    XCTAssertNil(times.audio)
+  }
+
+  @MainActor
+  func testExpandedAttachmentSurfaceDismissesKeyboard() {
+    let window = KeyboardDismissalSpyWindow()
+
+    NativeAttachmentExpandedSurfaceBehavior.dismissKeyboard(in: window)
+
+    XCTAssertTrue(window.didForceEndEditing)
+  }
+
+  func testExpandedAttachmentSurfaceMeasuresKeyboardOverlap() {
+    XCTAssertEqual(
+      NativeAttachmentExpandedSurfaceBehavior.keyboardOverlap(
+        containerBounds: CGRect(x: 0, y: 0, width: 390, height: 844),
+        keyboardLayoutFrame: CGRect(
+          x: 0,
+          y: 544,
+          width: 390,
+          height: 300
+        )
+      ),
+      300
+    )
+    XCTAssertEqual(
+      NativeAttachmentExpandedSurfaceBehavior.keyboardOverlap(
+        containerBounds: CGRect(x: 0, y: 0, width: 390, height: 844),
+        keyboardLayoutFrame: CGRect(x: 0, y: 844, width: 390, height: 0)
+      ),
+      0
+    )
+  }
+
+  func testAttachmentMenuReturnsToKeyboardDismissedAnchor() {
+    let anchorBounds = CGRect(x: 0, y: 0, width: 44, height: 44)
+
+    XCTAssertEqual(
+      NativeAttachmentPopoverAnchorLayout.sourceRect(
+        anchorBounds: anchorBounds,
+        keyboardDismissalOffset: 300,
+        isExpanded: true
+      ),
+      anchorBounds.offsetBy(dx: 0, dy: 340)
+    )
+    XCTAssertEqual(
+      NativeAttachmentPopoverAnchorLayout.sourceRect(
+        anchorBounds: anchorBounds,
+        keyboardDismissalOffset: 300,
+        isExpanded: false
+      ),
+      anchorBounds.offsetBy(dx: 0, dy: 300)
+    )
+  }
+
+  func testAttachmentMenuKeepsKeyboardWhenMenuFitsAboveTrigger() {
+    XCTAssertEqual(
+      NativeAttachmentPopoverPresentationLayout.keyboardDismissalOffset(
+        sourceRect: CGRect(x: 320, y: 480, width: 44, height: 44),
+        containerBounds: CGRect(x: 0, y: 0, width: 390, height: 844),
+        safeAreaInsets: UIEdgeInsets(top: 59, left: 0, bottom: 34, right: 0),
+        keyboardLayoutFrame: CGRect(
+          x: 0,
+          y: 544,
+          width: 390,
+          height: 300
+        ),
+        menuHeight: NativeAttachmentMenuLayout.size(
+          compatibleWith: UITraitCollection(
+            preferredContentSizeCategory: .large
+          )
+        ).height
+      ),
+      0
+    )
+  }
+
+  func testAttachmentMenuDismissesKeyboardAndRepositionsInCompactHeight() {
+    let sourceRect = CGRect(x: 760, y: 168, width: 44, height: 44)
+    let keyboardDismissalOffset =
+      NativeAttachmentPopoverPresentationLayout.keyboardDismissalOffset(
+        sourceRect: sourceRect,
+        containerBounds: CGRect(x: 0, y: 0, width: 844, height: 390),
+        safeAreaInsets: UIEdgeInsets(top: 0, left: 59, bottom: 21, right: 59),
+        keyboardLayoutFrame: CGRect(
+          x: 0,
+          y: 228,
+          width: 844,
+          height: 162
+        ),
+        menuHeight: NativeAttachmentMenuLayout.size(
+          compatibleWith: UITraitCollection(
+            preferredContentSizeCategory: .large
+          )
+        ).height
+      )
+
+    XCTAssertEqual(keyboardDismissalOffset, 162)
+    XCTAssertEqual(
+      NativeAttachmentPopoverPresentationLayout.sourceRect(
+        sourceRect,
+        keyboardDismissalOffset: keyboardDismissalOffset
+      ),
+      sourceRect.offsetBy(dx: 0, dy: 162)
+    )
+  }
+
+  func testAttachmentMenuDoesNotMoveWithoutSoftwareKeyboard() {
+    XCTAssertEqual(
+      NativeAttachmentPopoverPresentationLayout.keyboardDismissalOffset(
+        sourceRect: CGRect(x: 760, y: 168, width: 44, height: 44),
+        containerBounds: CGRect(x: 0, y: 0, width: 844, height: 390),
+        safeAreaInsets: UIEdgeInsets(top: 0, left: 59, bottom: 21, right: 59),
+        keyboardLayoutFrame: CGRect(x: 0, y: 390, width: 844, height: 0),
+        menuHeight: NativeAttachmentMenuLayout.size(
+          compatibleWith: UITraitCollection(
+            preferredContentSizeCategory: .large
+          )
+        ).height
+      ),
+      0
+    )
+  }
+
+  func testNativeAttachmentMenuUsesRoomyRowsAndInsets() {
+    let traits = UITraitCollection(preferredContentSizeCategory: .large)
+    let size = NativeAttachmentMenuLayout.size(compatibleWith: traits)
+
+    XCTAssertEqual(size.width, 216)
+    XCTAssertEqual(size.height, 264)
+    XCTAssertEqual(NativeAttachmentMenuLayout.contentPadding, 16)
+    XCTAssertEqual(
+      NativeAttachmentMenuLayout.itemHeight(compatibleWith: traits),
+      52
+    )
+    XCTAssertEqual(NativeAttachmentMenuLayout.itemSpacing, 8)
+    XCTAssertEqual(NativeAttachmentMenuLayout.labelTextStyle, .title3)
+  }
+
+  func testNativeAttachmentMenuUsesInterAndSharedPopoverChrome() {
+    let font = NativeAttachmentMenuTypography.font(
+      forTextStyle: NativeAttachmentMenuLayout.labelTextStyle
+    )
+    var didSelect = false
+    let button = makeNativeAttachmentMenuButton(
+      title: "Photos",
+      symbol: "photo",
+      action: { didSelect = true }
+    )
+    let titleLabel = button.subviews.compactMap { $0 as? UILabel }.first
+
+    XCTAssertTrue(font.fontName.hasPrefix("Inter"))
+    XCTAssertTrue(titleLabel?.font.fontName.hasPrefix("Inter") == true)
+    XCTAssertEqual(NativeAttachmentPopoverStyle.cornerRadius, 20)
+    XCTAssertEqual(NativeAttachmentPopoverStyle.borderWidth, 1)
+    XCTAssertEqual(NativeAttachmentPopoverStyle.shadowOpacity, 0.18)
+
+    button.sendActions(for: .primaryActionTriggered)
+    XCTAssertTrue(didSelect)
+  }
+
+  func testNativeAttachmentMenuGrowsAndScrollsForAccessibilityText() {
+    let traits = UITraitCollection(
+      preferredContentSizeCategory: .accessibilityExtraExtraExtraLarge
+    )
+    let itemHeight = NativeAttachmentMenuLayout.itemHeight(
+      compatibleWith: traits
+    )
+    let contentHeight = NativeAttachmentMenuLayout.contentHeight(
+      compatibleWith: traits
+    )
+    let size = NativeAttachmentMenuLayout.size(compatibleWith: traits)
+
+    XCTAssertGreaterThan(itemHeight, 52)
+    XCTAssertGreaterThan(contentHeight, 264)
+    XCTAssertEqual(
+      size.height,
+      min(contentHeight, NativeAttachmentMenuLayout.maximumHeight)
+    )
+    XCTAssertLessThanOrEqual(
+      size.height,
+      NativeAttachmentMenuLayout.maximumHeight
+    )
+  }
+
+  func testDynamicIslandQrScannerRecognizesTallSafeAreas() {
+    for safeAreaTopInset in [51, 59, 62] {
+      XCTAssertTrue(
+        AppDelegate.usesDynamicIslandQrScannerPortal(
+          safeAreaTopInset: CGFloat(safeAreaTopInset)
+        ),
+        "\(safeAreaTopInset)"
+      )
+    }
+  }
+
+  func testDynamicIslandQrScannerRejectsStandardSafeAreas() {
+    for safeAreaTopInset in [0, 44, 47, 50] {
+      XCTAssertFalse(
+        AppDelegate.usesDynamicIslandQrScannerPortal(
+          safeAreaTopInset: CGFloat(safeAreaTopInset)
+        ),
+        "\(safeAreaTopInset)"
+      )
+    }
+  }
+
+  func testClipboardImageDataPrefersOriginalPngBytes() throws {
+    let pasteboard = try XCTUnwrap(
+      UIPasteboard(name: UIPasteboard.Name(UUID().uuidString), create: true)
+    )
+    defer { UIPasteboard.remove(withName: pasteboard.name) }
+    let pngData = Data([0x89, 0x50, 0x4E, 0x47])
+    let jpegData = Data([0xFF, 0xD8, 0xFF])
+    pasteboard.setItems([
+      ["public.png": pngData, "public.jpeg": jpegData]
+    ])
+
+    XCTAssertEqual(AppDelegate.clipboardImageData(from: pasteboard), pngData)
+  }
+
+  func testClipboardImageDataPreservesOriginalWebPBytesForValidation() throws {
+    let pasteboard = try XCTUnwrap(
+      UIPasteboard(name: UIPasteboard.Name(UUID().uuidString), create: true)
+    )
+    defer { UIPasteboard.remove(withName: pasteboard.name) }
+    let webPData = Data("RIFFxxxxWEBP".utf8)
+    pasteboard.setData(webPData, forPasteboardType: "org.webmproject.webp")
+
+    XCTAssertEqual(AppDelegate.clipboardImageData(from: pasteboard), webPData)
+  }
+
+  func testClipboardImageDataPreservesOriginalGifBytesForValidation() throws {
+    let pasteboard = try XCTUnwrap(
+      UIPasteboard(name: UIPasteboard.Name(UUID().uuidString), create: true)
+    )
+    defer { UIPasteboard.remove(withName: pasteboard.name) }
+    let gifData = Data("GIF89a".utf8)
+    pasteboard.setData(gifData, forPasteboardType: "com.compuserve.gif")
+
+    XCTAssertEqual(AppDelegate.clipboardImageData(from: pasteboard), gifData)
+  }
+
+  func testClipboardImageDataReturnsNilWithoutAnImage() throws {
+    let pasteboard = try XCTUnwrap(
+      UIPasteboard(name: UIPasteboard.Name(UUID().uuidString), create: true)
+    )
+    defer { UIPasteboard.remove(withName: pasteboard.name) }
+    pasteboard.string = "text only"
+
+    XCTAssertNil(AppDelegate.clipboardImageData(from: pasteboard))
+  }
+
+  func testSanitizePngRemovesUIKitMetadataChunks() throws {
+    let fixture = try fixtureData(named: "UIKitEncoded", extension: "png")
+    XCTAssertEqual(
+      try pngChunkTypes(fixture),
+      [
+        "IHDR", "sRGB", "eXIf", "pHYs", "iDOT", "IDAT", "IDAT", "IEND",
+      ])
+
+    let sanitized = try MediaSanitizer.scrubPng(fixture)
+
+    XCTAssertEqual(
+      try pngChunkTypes(sanitized),
+      [
+        "IHDR", "sRGB", "IDAT", "IDAT", "IEND",
+      ])
+    try assertMatchesRelayImageMetadataPolicy(sanitized, mimeType: "image/png")
+    XCTAssertNotNil(UIImage(data: sanitized))
+
+    var withTrailingPayload = fixture
+    withTrailingPayload.append(Data("hidden location".utf8))
+    let scrubbedTrailingPayload = try MediaSanitizer.scrubPng(withTrailingPayload)
+    XCTAssertEqual(scrubbedTrailingPayload, sanitized)
+  }
+
+  func testSanitizePngSupportsDataSlices() throws {
+    let fixture = try fixtureData(named: "UIKitEncoded", extension: "png")
+    let padded = Data([0x00]) + fixture
+    let slice = padded.dropFirst()
+    XCTAssertNotEqual(slice.startIndex, 0)
+
+    let sanitized = try MediaSanitizer.scrubPng(slice)
+
+    try assertMatchesRelayImageMetadataPolicy(sanitized, mimeType: "image/png")
+    XCTAssertNotNil(UIImage(data: sanitized))
+  }
+
+  func testSanitizeJpegRemovesUIKitMetadataSegments() throws {
+    let fixture = try fixtureData(named: "UIKitEncoded", extension: "jpg")
+    XCTAssertEqual(try jpegMetadataMarkers(fixture), [0xE0, 0xE1, 0xED])
+
+    let sanitized = try MediaSanitizer.scrubJpeg(fixture)
+
+    XCTAssertEqual(try jpegMetadataMarkers(sanitized), [0xE0])
+    try assertMatchesRelayImageMetadataPolicy(sanitized, mimeType: "image/jpeg")
+    XCTAssertNotNil(UIImage(data: sanitized))
+
+    var withTrailingPayload = fixture
+    withTrailingPayload.append(Data("hidden location".utf8))
+    let scrubbedTrailingPayload = try MediaSanitizer.scrubJpeg(withTrailingPayload)
+    XCTAssertEqual(scrubbedTrailingPayload, sanitized)
+  }
+
+  func testSanitizeJpegSupportsDataSlices() throws {
+    let fixture = try fixtureData(named: "UIKitEncoded", extension: "jpg")
+    let padded = Data([0x00]) + fixture
+    let slice = padded.dropFirst()
+    XCTAssertNotEqual(slice.startIndex, 0)
+
+    let sanitized = try MediaSanitizer.scrubJpeg(slice)
+
+    try assertMatchesRelayImageMetadataPolicy(sanitized, mimeType: "image/jpeg")
+    XCTAssertNotNil(UIImage(data: sanitized))
+  }
+
+  func testEncodeJpegScrubsUIKitOutput() throws {
+    let fixture = try fixtureData(named: "UIKitEncoded", extension: "jpg")
+    let image = try XCTUnwrap(UIImage(data: fixture))
+
+    let encoded = try XCTUnwrap(MediaSanitizer.encodeJpeg(image))
+
+    try assertMatchesRelayImageMetadataPolicy(encoded, mimeType: "image/jpeg")
+    XCTAssertNotNil(UIImage(data: encoded))
+  }
+
+  func testSanitizeDisplayP3ImagePreservesRenderedColorInSRGB() throws {
+    let image = try displayP3Image(red: 0.9, green: 0.2, blue: 0.1)
+    let expectedColor = try sRGBPixel(from: image)
+    let mimeTypesAndAccuracy: [(mimeType: String, accuracy: UInt8)] = [
+      ("image/png", 0), ("image/jpeg", 1),
+    ]
+
+    for (mimeType, accuracy) in mimeTypesAndAccuracy {
+      let sanitized = try XCTUnwrap(
+        MediaSanitizer.sanitizeImage(image, mimeType: mimeType),
+        "Failed to sanitize Display-P3 image as \(mimeType)"
+      )
+
+      try assertMatchesRelayImageMetadataPolicy(sanitized, mimeType: mimeType)
+      let decoded = try XCTUnwrap(UIImage(data: sanitized))
+      XCTAssertEqual(
+        decoded.cgImage?.colorSpace?.name,
+        CGColorSpace(name: CGColorSpace.sRGB)?.name
+      )
+      let actualColor = try sRGBPixel(from: decoded)
+      XCTAssertEqual(actualColor.count, expectedColor.count)
+      for (actual, expected) in zip(actualColor, expectedColor) {
+        XCTAssertLessThanOrEqual(
+          actual > expected ? actual - expected : expected - actual,
+          accuracy
+        )
+      }
+    }
+  }
+
+  private func displayP3Image(red: CGFloat, green: CGFloat, blue: CGFloat) throws -> UIImage {
+    let colorSpace = try XCTUnwrap(CGColorSpace(name: CGColorSpace.displayP3))
+    let bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue)
+    let context = try XCTUnwrap(
+      CGContext(
+        data: nil,
+        width: 1,
+        height: 1,
+        bitsPerComponent: 8,
+        bytesPerRow: 4,
+        space: colorSpace,
+        bitmapInfo: bitmapInfo.rawValue
+      )
+    )
+    context.setFillColor(
+      try XCTUnwrap(CGColor(colorSpace: colorSpace, components: [red, green, blue, 1]))
+    )
+    context.fill(CGRect(x: 0, y: 0, width: 1, height: 1))
+    return UIImage(cgImage: try XCTUnwrap(context.makeImage()))
+  }
+
+  private func sRGBPixel(from image: UIImage) throws -> [UInt8] {
+    let colorSpace = try XCTUnwrap(CGColorSpace(name: CGColorSpace.sRGB))
+    var bytes = [UInt8](repeating: 0, count: 4)
+    let bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue)
+    let context = try bytes.withUnsafeMutableBytes { bytes in
+      try XCTUnwrap(
+        CGContext(
+          data: bytes.baseAddress,
+          width: 1,
+          height: 1,
+          bitsPerComponent: 8,
+          bytesPerRow: 4,
+          space: colorSpace,
+          bitmapInfo: bitmapInfo.rawValue
+        )
+      )
+    }
+    context.interpolationQuality = .none
+    context.draw(try XCTUnwrap(image.cgImage), in: CGRect(x: 0, y: 0, width: 1, height: 1))
+    return bytes
+  }
+
+  private func fixtureData(named name: String, extension fileExtension: String) throws -> Data {
+    let url = try XCTUnwrap(
+      Bundle(for: RunnerTests.self).url(forResource: name, withExtension: fileExtension))
+    return try Data(contentsOf: url)
+  }
+}
+
+private final class KeyboardDismissalSpyWindow: UIWindow {
+  private(set) var didForceEndEditing = false
+
+  override func endEditing(_ force: Bool) -> Bool {
+    didForceEndEditing = force
+    return true
+  }
+}
+
+private enum RelayImagePolicyError: Error {
+  case invalidPng
+  case invalidJpeg
+  case metadataForbidden
+}
+
+private let pngSignature = Data([0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A])
+private let allowedPngAncillaryChunks: Set<String> = [
+  "cHRM", "gAMA", "sBIT", "sRGB", "bKGD", "hIST", "tRNS", "sPLT", "acTL", "fcTL", "fdAT",
+]
+
+private func assertMatchesRelayImageMetadataPolicy(_ data: Data, mimeType: String) throws {
+  switch mimeType {
+  case "image/png":
+    guard data.count >= pngSignature.count, data.prefix(pngSignature.count) == pngSignature else {
+      throw RelayImagePolicyError.invalidPng
+    }
+    var offset = pngSignature.count
+    while offset < data.count {
+      guard data.count - offset >= 12 else { throw RelayImagePolicyError.invalidPng }
+      let payloadLength = Int(try readUInt32BigEndian(data, at: offset))
+      guard payloadLength <= data.count - offset - 12 else {
+        throw RelayImagePolicyError.invalidPng
+      }
+      let typeBytes = data[(offset + 4)..<(offset + 8)]
+      guard let type = String(bytes: typeBytes, encoding: .ascii) else {
+        throw RelayImagePolicyError.invalidPng
+      }
+      let chunkEnd = offset + payloadLength + 12
+      let isAncillary = typeBytes[typeBytes.startIndex] & 0x20 != 0
+      if isAncillary, !allowedPngAncillaryChunks.contains(type) {
+        throw RelayImagePolicyError.metadataForbidden
+      }
+      offset = chunkEnd
+      if type == "IEND" {
+        guard offset == data.count else { throw RelayImagePolicyError.metadataForbidden }
+        return
+      }
+    }
+    throw RelayImagePolicyError.invalidPng
+  case "image/jpeg":
+    guard data.count >= 2, data[0] == 0xFF, data[1] == 0xD8 else {
+      throw RelayImagePolicyError.invalidJpeg
+    }
+    var offset = 2
+    var inScan = false
+    while offset < data.count {
+      if inScan, data[offset] != 0xFF {
+        offset += 1
+        continue
+      }
+      guard data[offset] == 0xFF else { throw RelayImagePolicyError.invalidJpeg }
+      while offset < data.count, data[offset] == 0xFF { offset += 1 }
+      guard offset < data.count else { throw RelayImagePolicyError.invalidJpeg }
+      let marker = data[offset]
+      offset += 1
+      if inScan, marker == 0x00 { continue }
+      if (0xD0...0xD7).contains(marker) || marker == 0x01 { continue }
+      if marker == 0xD9 {
+        guard offset == data.count else { throw RelayImagePolicyError.metadataForbidden }
+        return
+      }
+      guard marker != 0xD8, data.count - offset >= 2 else {
+        throw RelayImagePolicyError.invalidJpeg
+      }
+      let length = Int(try readUInt16BigEndian(data, at: offset))
+      guard length >= 2, length <= data.count - offset else {
+        throw RelayImagePolicyError.invalidJpeg
+      }
+      let payload = (offset + 2)..<(offset + length)
+      if marker == 0xE0 {
+        guard
+          payload.count >= 14,
+          data[payload.lowerBound..<(payload.lowerBound + 5)].elementsEqual([
+            0x4A, 0x46, 0x49, 0x46, 0x00,
+          ]),
+          payload.count
+            == 14 + 3 * Int(data[payload.lowerBound + 12]) * Int(data[payload.lowerBound + 13])
+        else {
+          throw RelayImagePolicyError.metadataForbidden
+        }
+      } else if marker == 0xEE {
+        guard
+          payload.count == 12,
+          data[payload.lowerBound..<(payload.lowerBound + 5)].elementsEqual([
+            0x41, 0x64, 0x6F, 0x62, 0x65,
+          ])
+        else {
+          throw RelayImagePolicyError.metadataForbidden
+        }
+      } else if (0xE1...0xED).contains(marker) || marker == 0xEF || marker == 0xFE {
+        throw RelayImagePolicyError.metadataForbidden
+      }
+      offset += length
+      inScan = marker == 0xDA
+    }
+    throw RelayImagePolicyError.invalidJpeg
+  default:
+    XCTFail("Unsupported test MIME type: \(mimeType)")
+  }
+}
+
+private func pngChunkTypes(_ data: Data) throws -> [String] {
+  guard data.count >= pngSignature.count, data.prefix(pngSignature.count) == pngSignature else {
+    throw RelayImagePolicyError.invalidPng
+  }
+  var result: [String] = []
+  var offset = pngSignature.count
+  while offset < data.count {
+    guard data.count - offset >= 12 else { throw RelayImagePolicyError.invalidPng }
+    let payloadLength = Int(try readUInt32BigEndian(data, at: offset))
+    guard payloadLength <= data.count - offset - 12 else { throw RelayImagePolicyError.invalidPng }
+    guard let type = String(bytes: data[(offset + 4)..<(offset + 8)], encoding: .ascii) else {
+      throw RelayImagePolicyError.invalidPng
+    }
+    result.append(type)
+    offset += payloadLength + 12
+    if type == "IEND" { return result }
+  }
+  throw RelayImagePolicyError.invalidPng
+}
+
+private func jpegMetadataMarkers(_ data: Data) throws -> [UInt8] {
+  guard data.count >= 2, data[0] == 0xFF, data[1] == 0xD8 else {
+    throw RelayImagePolicyError.invalidJpeg
+  }
+  var result: [UInt8] = []
+  var offset = 2
+  var inScan = false
+  while offset < data.count {
+    if inScan, data[offset] != 0xFF {
+      offset += 1
+      continue
+    }
+    guard data[offset] == 0xFF else { throw RelayImagePolicyError.invalidJpeg }
+    while offset < data.count, data[offset] == 0xFF { offset += 1 }
+    guard offset < data.count else { throw RelayImagePolicyError.invalidJpeg }
+    let marker = data[offset]
+    offset += 1
+    if inScan, marker == 0x00 { continue }
+    if (0xD0...0xD7).contains(marker) || marker == 0x01 { continue }
+    if marker == 0xD9 { return result }
+    guard marker != 0xD8, data.count - offset >= 2 else {
+      throw RelayImagePolicyError.invalidJpeg
+    }
+    let length = Int(try readUInt16BigEndian(data, at: offset))
+    guard length >= 2, length <= data.count - offset else {
+      throw RelayImagePolicyError.invalidJpeg
+    }
+    if (0xE0...0xEF).contains(marker) || marker == 0xFE {
+      result.append(marker)
+    }
+    offset += length
+    inScan = marker == 0xDA
+  }
+  throw RelayImagePolicyError.invalidJpeg
+}
+
+private func readUInt16BigEndian(_ data: Data, at offset: Int) throws -> UInt16 {
+  guard data.count - offset >= 2 else { throw RelayImagePolicyError.invalidJpeg }
+  return UInt16(data[offset]) << 8 | UInt16(data[offset + 1])
+}
+
+private func readUInt32BigEndian(_ data: Data, at offset: Int) throws -> UInt32 {
+  guard data.count - offset >= 4 else { throw RelayImagePolicyError.invalidPng }
+  return UInt32(data[offset]) << 24 | UInt32(data[offset + 1]) << 16
+    | UInt32(data[offset + 2]) << 8 | UInt32(data[offset + 3])
+}