feat(live): Live Activity / Dynamic Island (WidgetKit extension iOS 16.2+/17+)

Nouvelle target "CoachLiveActivity" (Widget Extension, bundle
ch.hypnotruck.coach.LiveActivity, iOS 17.0) embarquée dans App via copy phase
"Embed App Extensions" (dstSubfolderSpec=13). API ActivityKit + WidgetKit
vérifiées sur SDK iOS 26.5 swiftinterface (Activity.request(content:),
ActivityConfiguration, DynamicIsland(expanded:compactLeading:trailing:minimal:)).

Architecture :
- CoachLiveActivityAttributes (modèle partagé App ↔ extension)
- CoachLiveActivityWidget (Lock Screen + Dynamic Island UI)
- CoachLiveActivityBundle (@main WidgetBundle)
- LiveActivityManager (App side, wrap Activity.request/update/end)
- LiveStore hook : start sur 1er sample, update à chaque ingest, end après
  60s "lost". Tout guardé @available(iOS 16.2, *) pour préserver deployment iOS 15.
- Info.plist App : NSSupportsLiveActivities = YES.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

ios/App/App.xcodeproj/project.pbxproj

@@ -9,6 +9,7 @@
 /* Begin PBXBuildFile section */
 		01468471ECA28EA66AFE2D6C /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 0EB6C76F68679844EC72178F /* Foundation.framework */; };
 		0318E7E610501FC1F958251B /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 3342ACCE085010828CF63565 /* Assets.xcassets */; };
+		1B690F0D16AB76A6854CA1F7 /* CoachLiveActivityAttributes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 431C7B10248D8EED4D397AB0 /* CoachLiveActivityAttributes.swift */; };
 		21B242F8E61FB07C476C477C /* CoachLiveBridge.swift in Sources */ = {isa = PBXBuildFile; fileRef = A9DF3346C49A690C3C3DF2F3 /* CoachLiveBridge.swift */; };
 		290D0F17978B7EF3DDB3A792 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8A06CDFF5B4F7852B6329862 /* ContentView.swift */; };
 		2FAD9763203C412B000D30F8 /* config.xml in Resources */ = {isa = PBXBuildFile; fileRef = 2FAD9762203C412B000D30F8 /* config.xml */; };
@@ -23,12 +24,18 @@
 		50B271D11FEDC1A000F3C39B /* public in Resources */ = {isa = PBXBuildFile; fileRef = 50B271D01FEDC1A000F3C39B /* public */; };
 		543A7005429A43F54C0EC61B /* CoachWatchApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = F6BEAEF6F6274D61CAF22636 /* CoachWatchApp.swift */; };
 		548F8BFA06417B35474BD69E /* CoachLiveView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 340B99D5EA4DB985D7DFDA10 /* CoachLiveView.swift */; };
+		694B2F69591CAA85CE5DEC3A /* CoachLiveActivityWidget.swift in Sources */ = {isa = PBXBuildFile; fileRef = EBBF61A35F291A021BA75C60 /* CoachLiveActivityWidget.swift */; };
 		88F28EB12FBB330E00E8306E /* CoachWorkoutObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = 88F28EB02FBB330E00E8306E /* CoachWorkoutObserver.swift */; };
 		97116C31D4CC40F71A6A0FE7 /* LiveStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6030BD533EBC2D1D26DB9479 /* LiveStore.swift */; };
+		9BED4C04C38FCB8634CE2A94 /* CoachLiveActivity.appex in Embed App Extensions */ = {isa = PBXBuildFile; fileRef = 9B5664FCDB4DDE62514D3A1E /* CoachLiveActivity.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
+		9E88D51C0B0255D24274DACC /* CoachLiveActivityBundle.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1BA75EEC3CBF1F46A9028C66 /* CoachLiveActivityBundle.swift */; };
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 		C0AC4A07811751FB78AA0001 /* CoachAuth.swift in Sources */ = {isa = PBXBuildFile; fileRef = C0AC4A07811751FB78AA0002 /* CoachAuth.swift */; };
+		D1384CFA4960060CDBF05FC3 /* CoachLiveActivityAttributes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 431C7B10248D8EED4D397AB0 /* CoachLiveActivityAttributes.swift */; };
 		D1BD5B1990CF3F2B9C5D0001 /* CoachWorkoutKit.swift in Sources */ = {isa = PBXBuildFile; fileRef = D1BD5B1990CF3F2B9C5D0002 /* CoachWorkoutKit.swift */; };
+		E1E8BD7CF9C19E56CE0F57C4 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D61D7B2F5AFEF834423E07AB /* Foundation.framework */; };
 		E2CE6C2AA1DF4F3CAD6E0001 /* MainViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2CE6C2AA1DF4F3CAD6E0002 /* MainViewController.swift */; };
+		E547F675B2F61C3475D2A787 /* LiveActivityManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = B93DA6B121E94B11DF938C90 /* LiveActivityManager.swift */; };
 		F1ABCDEF0123456789AB0001 /* CoachHealthRoute.swift in Sources */ = {isa = PBXBuildFile; fileRef = F1ABCDEF0123456789AB0002 /* CoachHealthRoute.swift */; };
 /* End PBXBuildFile section */
 
@@ -40,9 +47,27 @@
 			remoteGlobalIDString = D5BF41648D334DC24770B9D2;
 			remoteInfo = CoachWatch;
 		};
+		9D160400D2AE8723B1112F2F /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 504EC2FC1FED79650016851F /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 28FB3582F417B2F3C6BFC5D1;
+			remoteInfo = CoachLiveActivity;
+		};
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXCopyFilesBuildPhase section */
+		C4916F81E61FABAAD62EE4F9 /* Embed App Extensions */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 13;
+			files = (
+				9BED4C04C38FCB8634CE2A94 /* CoachLiveActivity.appex in Embed App Extensions */,
+			);
+			name = "Embed App Extensions";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		F50D9A7DFABB52EE96BB93D6 /* Embed Watch Content */ = {
 			isa = PBXCopyFilesBuildPhase;
 			buildActionMask = 2147483647;
@@ -58,10 +83,12 @@
 
 /* Begin PBXFileReference section */
 		0EB6C76F68679844EC72178F /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = Platforms/WatchOS.platform/Developer/SDKs/WatchOS11.0.sdk/System/Library/Frameworks/Foundation.framework; sourceTree = DEVELOPER_DIR; };
+		1BA75EEC3CBF1F46A9028C66 /* CoachLiveActivityBundle.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = CoachLiveActivityBundle.swift; sourceTree = "<group>"; };
 		2517374227A4072A4D6AFC15 /* CoachWatch.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = CoachWatch.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		2FAD9762203C412B000D30F8 /* config.xml */ = {isa = PBXFileReference; lastKnownFileType = text.xml; path = config.xml; sourceTree = "<group>"; };
 		3342ACCE085010828CF63565 /* Assets.xcassets */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		340B99D5EA4DB985D7DFDA10 /* CoachLiveView.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = CoachLiveView.swift; sourceTree = "<group>"; };
+		431C7B10248D8EED4D397AB0 /* CoachLiveActivityAttributes.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = CoachLiveActivityAttributes.swift; sourceTree = "<group>"; };
 		50379B222058CBB4000EE86E /* capacitor.config.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = capacitor.config.json; sourceTree = "<group>"; };
 		504EC3041FED79650016851F /* App.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = App.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		504EC3071FED79650016851F /* AppDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
@@ -77,14 +104,19 @@
 		8A06CDFF5B4F7852B6329862 /* ContentView.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = "<group>"; };
 		8AC9C9B9971F55027D227A06 /* WorkoutManager.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = WorkoutManager.swift; sourceTree = "<group>"; };
 		958DCC722DB07C7200EA8C5F /* debug.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = debug.xcconfig; path = ../debug.xcconfig; sourceTree = SOURCE_ROOT; };
+		9B5664FCDB4DDE62514D3A1E /* CoachLiveActivity.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = CoachLiveActivity.appex; sourceTree = BUILT_PRODUCTS_DIR; };
 		A420239FC6D065C8A599B61C /* ConnectivityManager.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = ConnectivityManager.swift; sourceTree = "<group>"; };
 		A9DF3346C49A690C3C3DF2F3 /* CoachLiveBridge.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = CoachLiveBridge.swift; sourceTree = "<group>"; };
+		B93DA6B121E94B11DF938C90 /* LiveActivityManager.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = LiveActivityManager.swift; sourceTree = "<group>"; };
 		C0AC4A07811751FB78AA0002 /* CoachAuth.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CoachAuth.swift; sourceTree = "<group>"; };
 		D09B589FA572B2C14E8CD835 /* CoachWatch.entitlements */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.plist.entitlements; path = CoachWatch.entitlements; sourceTree = "<group>"; };
 		D1BD5B1990CF3F2B9C5D0002 /* CoachWorkoutKit.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CoachWorkoutKit.swift; sourceTree = "<group>"; };
+		D61D7B2F5AFEF834423E07AB /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS18.0.sdk/System/Library/Frameworks/Foundation.framework; sourceTree = DEVELOPER_DIR; };
 		E2CE6C2AA1DF4F3CAD6E0002 /* MainViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MainViewController.swift; sourceTree = "<group>"; };
+		EBBF61A35F291A021BA75C60 /* CoachLiveActivityWidget.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = CoachLiveActivityWidget.swift; sourceTree = "<group>"; };
 		F1ABCDEF0123456789AB0002 /* CoachHealthRoute.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CoachHealthRoute.swift; sourceTree = "<group>"; };
 		F6BEAEF6F6274D61CAF22636 /* CoachWatchApp.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; path = CoachWatchApp.swift; sourceTree = "<group>"; };
+		FBFCA969A1B083CD3178D9B2 /* Info.plist */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -104,6 +136,14 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		D8B443A150F5A7E1C135ABAA /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				E1E8BD7CF9C19E56CE0F57C4 /* Foundation.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
@@ -115,6 +155,18 @@
 			name = watchOS;
 			sourceTree = "<group>";
 		};
+		460F58BF290358F572689016 /* CoachLiveActivity */ = {
+			isa = PBXGroup;
+			children = (
+				431C7B10248D8EED4D397AB0 /* CoachLiveActivityAttributes.swift */,
+				EBBF61A35F291A021BA75C60 /* CoachLiveActivityWidget.swift */,
+				1BA75EEC3CBF1F46A9028C66 /* CoachLiveActivityBundle.swift */,
+				FBFCA969A1B083CD3178D9B2 /* Info.plist */,
+			);
+			name = CoachLiveActivity;
+			path = CoachLiveActivity;
+			sourceTree = "<group>";
+		};
 		504EC2FB1FED79650016851F = {
 			isa = PBXGroup;
 			children = (
@@ -123,6 +175,7 @@
 				504EC3051FED79650016851F /* Products */,
 				B91ACF72653FD495148698CF /* Frameworks */,
 				5A8EA0CF92316E437E9053A0 /* CoachWatch */,
+				460F58BF290358F572689016 /* CoachLiveActivity */,
 			);
 			sourceTree = "<group>";
 		};
@@ -131,6 +184,7 @@
 			children = (
 				504EC3041FED79650016851F /* App.app */,
 				2517374227A4072A4D6AFC15 /* CoachWatch.app */,
+				9B5664FCDB4DDE62514D3A1E /* CoachLiveActivity.appex */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -155,6 +209,7 @@
 				A9DF3346C49A690C3C3DF2F3 /* CoachLiveBridge.swift */,
 				6030BD533EBC2D1D26DB9479 /* LiveStore.swift */,
 				340B99D5EA4DB985D7DFDA10 /* CoachLiveView.swift */,
+				B93DA6B121E94B11DF938C90 /* LiveActivityManager.swift */,
 			);
 			path = App;
 			sourceTree = "<group>";
@@ -173,10 +228,19 @@
 			path = CoachWatch;
 			sourceTree = "<group>";
 		};
+		7497026ECEFF81CCD11C289D /* iOS */ = {
+			isa = PBXGroup;
+			children = (
+				D61D7B2F5AFEF834423E07AB /* Foundation.framework */,
+			);
+			name = iOS;
+			sourceTree = "<group>";
+		};
 		B91ACF72653FD495148698CF /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
 				3E58B60E9B4F1CA14B5EC667 /* watchOS */,
+				7497026ECEFF81CCD11C289D /* iOS */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
@@ -184,6 +248,23 @@
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
+		28FB3582F417B2F3C6BFC5D1 /* CoachLiveActivity */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = C2671D2741138A4A55CE1ED0 /* Build configuration list for PBXNativeTarget "CoachLiveActivity" */;
+			buildPhases = (
+				2D25180D64B3326AE6F9D91B /* Sources */,
+				D8B443A150F5A7E1C135ABAA /* Frameworks */,
+				411CB19BB5DB127758A86A2D /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = CoachLiveActivity;
+			productName = CoachLiveActivity;
+			productReference = 9B5664FCDB4DDE62514D3A1E /* CoachLiveActivity.appex */;
+			productType = "com.apple.product-type.app-extension";
+		};
 		504EC3031FED79650016851F /* App */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 504EC3161FED79650016851F /* Build configuration list for PBXNativeTarget "App" */;
@@ -192,11 +273,13 @@
 				504EC3011FED79650016851F /* Frameworks */,
 				504EC3021FED79650016851F /* Resources */,
 				F50D9A7DFABB52EE96BB93D6 /* Embed Watch Content */,
+				C4916F81E61FABAAD62EE4F9 /* Embed App Extensions */,
 			);
 			buildRules = (
 			);
 			dependencies = (
 				EEEAB45810829EE8B3C4976E /* PBXTargetDependency */,
+				BACE810C3CD85E302BBFEC84 /* PBXTargetDependency */,
 			);
 			name = App;
 			packageProductDependencies = (
@@ -258,11 +341,19 @@
 			targets = (
 				504EC3031FED79650016851F /* App */,
 				D5BF41648D334DC24770B9D2 /* CoachWatch */,
+				28FB3582F417B2F3C6BFC5D1 /* CoachLiveActivity */,
 			);
 		};
 /* End PBXProject section */
 
 /* Begin PBXResourcesBuildPhase section */
+		411CB19BB5DB127758A86A2D /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		504EC3021FED79650016851F /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -287,6 +378,16 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */
+		2D25180D64B3326AE6F9D91B /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				1B690F0D16AB76A6854CA1F7 /* CoachLiveActivityAttributes.swift in Sources */,
+				694B2F69591CAA85CE5DEC3A /* CoachLiveActivityWidget.swift in Sources */,
+				9E88D51C0B0255D24274DACC /* CoachLiveActivityBundle.swift in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		504EC3001FED79650016851F /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -300,6 +401,8 @@
 				21B242F8E61FB07C476C477C /* CoachLiveBridge.swift in Sources */,
 				97116C31D4CC40F71A6A0FE7 /* LiveStore.swift in Sources */,
 				548F8BFA06417B35474BD69E /* CoachLiveView.swift in Sources */,
+				D1384CFA4960060CDBF05FC3 /* CoachLiveActivityAttributes.swift in Sources */,
+				E547F675B2F61C3475D2A787 /* LiveActivityManager.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -317,6 +420,12 @@
 /* End PBXSourcesBuildPhase section */
 
 /* Begin PBXTargetDependency section */
+		BACE810C3CD85E302BBFEC84 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			name = CoachLiveActivity;
+			target = 28FB3582F417B2F3C6BFC5D1 /* CoachLiveActivity */;
+			targetProxy = 9D160400D2AE8723B1112F2F /* PBXContainerItemProxy */;
+		};
 		EEEAB45810829EE8B3C4976E /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
 			name = CoachWatch;
@@ -575,6 +684,63 @@
 			};
 			name = Release;
 		};
+		90CE3C22F60C6432852DC1B1 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = "";
+				CLANG_ENABLE_OBJC_WEAK = NO;
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 22;
+				DEVELOPMENT_TEAM = TZ2PVTRKNY;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
+				GENERATE_INFOPLIST_FILE = NO;
+				INFOPLIST_FILE = CoachLiveActivity/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.2;
+				PRODUCT_BUNDLE_IDENTIFIER = ch.hypnotruck.coach.LiveActivity;
+				PRODUCT_NAME = CoachLiveActivity;
+				SDKROOT = iphoneos;
+				SKIP_INSTALL = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		C7A0838F3DA0842EDE320050 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = "";
+				CLANG_ENABLE_OBJC_WEAK = NO;
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 22;
+				DEVELOPMENT_TEAM = TZ2PVTRKNY;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
+				GENERATE_INFOPLIST_FILE = NO;
+				INFOPLIST_FILE = CoachLiveActivity/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@executable_path/../../Frameworks",
+				);
+				MARKETING_VERSION = 1.2;
+				PRODUCT_BUNDLE_IDENTIFIER = ch.hypnotruck.coach.LiveActivity;
+				PRODUCT_NAME = CoachLiveActivity;
+				SDKROOT = iphoneos;
+				SKIP_INSTALL = YES;
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -596,6 +762,15 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		C2671D2741138A4A55CE1ED0 /* Build configuration list for PBXNativeTarget "CoachLiveActivity" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				C7A0838F3DA0842EDE320050 /* Release */,
+				90CE3C22F60C6432852DC1B1 /* Debug */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		FA2A9602402AA384726BFF97 /* Build configuration list for PBXNativeTarget "CoachWatch" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (

ios/App/App/Info.plist

@@ -38,6 +38,8 @@
 	<string>Coach Hypnotruck utilise votre position pour tracer vos sorties course et VTT.</string>
 	<key>NSMotionUsageDescription</key>
 	<string>Coach Hypnotruck utilise les capteurs de mouvement pour mesurer votre activité.</string>
+	<key>NSSupportsLiveActivities</key>
+	<true/>
 	<key>NSPhotoLibraryUsageDescription</key>
 	<string>Coach Hypnotruck peut accéder à vos photos pour ajouter une photo de profil.</string>
 	<key>UIBackgroundModes</key>

ios/App/App/LiveActivityManager.swift

@@ -0,0 +1,77 @@
+// LiveActivityManager.swift
+// Wrapper main-actor autour d'ActivityKit pour la Live Activity / Dynamic
+// Island du live workout. Appelé par LiveStore à chaque transition / sample.
+// API ActivityKit vérifiée sur iOS 26.5 SDK swiftinterface :
+//   Activity.request(attributes:, content: ActivityContent<...>, pushType:)
+//   activity.update(_ content: ActivityContent<...>) async
+//   activity.end(_ content: ActivityContent<...>?, dismissalPolicy:) async
+//   ActivityAuthorizationInfo().areActivitiesEnabled
+
+import ActivityKit
+import Foundation
+import os
+
+@available(iOS 16.2, *)
+@MainActor
+final class LiveActivityManager {
+    static let shared = LiveActivityManager()
+    private var current: Activity<CoachLiveActivityAttributes>?
+    private static let log = Logger(subsystem: "ch.hypnotruck.coach", category: "live-activity")
+
+    private init() {}
+
+    private var isAuthorized: Bool {
+        ActivityAuthorizationInfo().areActivitiesEnabled
+    }
+
+    /// Démarre l'activité si pas déjà en cours. Si déjà en cours, met à jour.
+    func start(label: String,
+               symbol: String,
+               state: CoachLiveActivityAttributes.ContentState) {
+        if current != nil {
+            update(state: state)
+            return
+        }
+        guard isAuthorized else {
+            Self.log.warning("Live Activities not authorized (user disabled in Settings)")
+            return
+        }
+        let attrs = CoachLiveActivityAttributes(
+            activityLabel: label,
+            activitySymbol: symbol,
+            startedAt: Date()
+        )
+        let content = ActivityContent(
+            state: state,
+            staleDate: Date().addingTimeInterval(60)
+        )
+        do {
+            current = try Activity.request(
+                attributes: attrs,
+                content: content,
+                pushType: nil
+            )
+            Self.log.info("Live Activity started: \(label, privacy: .public)")
+        } catch {
+            Self.log.error("Failed to start Live Activity: \(error.localizedDescription, privacy: .public)")
+        }
+    }
+
+    /// Met à jour l'activité en cours (no-op si pas démarrée).
+    func update(state: CoachLiveActivityAttributes.ContentState) {
+        guard let activity = current else { return }
+        let content = ActivityContent(
+            state: state,
+            staleDate: Date().addingTimeInterval(60)
+        )
+        Task { await activity.update(content) }
+    }
+
+    /// Termine l'activité. dismissalPolicy .default = bannière reste ~4h.
+    func end() {
+        guard let activity = current else { return }
+        current = nil
+        Task { await activity.end(nil, dismissalPolicy: .default) }
+        Self.log.info("Live Activity ended")
+    }
+}

ios/App/App/LiveStore.swift

@@ -27,14 +27,31 @@ final class LiveStore: ObservableObject {
 
     private var watchdog: Timer?
     private let lostThreshold: TimeInterval = 8
+    private let endAfterLost: TimeInterval = 60
+    private var lostSince: Date?
 
     private init() {
         watchdog = Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { [weak self] _ in
             Task { @MainActor [weak self] in
                 guard let self else { return }
-                guard self.status == .live, let ts = self.lastSampleAt else { return }
+                guard let ts = self.lastSampleAt else { return }
-                if Date().timeIntervalSince(ts) > self.lostThreshold {
+                let sinceLast = Date().timeIntervalSince(ts)
+                if self.status == .live, sinceLast > self.lostThreshold {
+                    // Transition live -> lost : signale à la Live Activity
+                    // que la connexion est perdue (heartbeat off, statut orange).
                     self.status = .lost
+                    self.lostSince = Date()
+                    if #available(iOS 16.2, *) {
+                        LiveActivityManager.shared.update(state: self.currentState(isLive: false))
+                    }
+                } else if self.status == .lost,
+                          let lostAt = self.lostSince,
+                          Date().timeIntervalSince(lostAt) > self.endAfterLost {
+                    // Resté .lost trop longtemps : on termine l'activité.
+                    if #available(iOS 16.2, *) {
+                        LiveActivityManager.shared.end()
+                    }
+                    self.lostSince = nil
                 }
             }
         }
@@ -51,6 +68,7 @@ final class LiveStore: ObservableObject {
         let act  = sample["activityType"]     as? String
         Task { @MainActor [weak self] in
             guard let self else { return }
+            let wasNotLive = self.status != .live
             if let v = hr   { self.heartRate = v }
             if let v = kcal { self.activeEnergyKcal = v }
             if let v = dist { self.distanceMeters = v }
@@ -58,8 +76,35 @@ final class LiveStore: ObservableObject {
             if let v = act  { self.activityType = v }
             self.lastSampleAt = Date()
             self.status = .live
+            self.lostSince = nil
+
+            // Hook Live Activity / Dynamic Island (iOS 16.1+ uniquement,
+            // l'app cible iOS 15 mais ActivityKit n'existe qu'à partir de 16.1)
+            if #available(iOS 16.2, *) {
+                let state = self.currentState(isLive: true)
+                if wasNotLive {
+                    LiveActivityManager.shared.start(
+                        label: self.activityLabel ?? "Séance",
+                        symbol: self.activitySymbol,
+                        state: state
+                    )
+                } else {
+                    LiveActivityManager.shared.update(state: state)
                 }
             }
+        }
+    }
+
+    @available(iOS 16.2, *)
+    private func currentState(isLive: Bool) -> CoachLiveActivityAttributes.ContentState {
+        CoachLiveActivityAttributes.ContentState(
+            heartRate: heartRate,
+            activeEnergyKcal: activeEnergyKcal,
+            distanceMeters: distanceMeters,
+            elapsedSec: elapsedSec,
+            isLive: isLive
+        )
+    }
 
     // MARK: - Formatted accessors (utilisés par CoachLiveView)
 
@@ -95,4 +140,15 @@ final class LiveStore: ObservableObject {
         default: return nil
         }
     }
+    /// SF Symbol pour l'activité (utilisé par la Live Activity).
+    var activitySymbol: String {
+        switch activityType {
+        case "cycling":  return "bicycle"
+        case "walking":  return "figure.walk"
+        case "hiking":   return "figure.walk"
+        case "strength": return "dumbbell.fill"
+        case "mobility": return "figure.yoga"
+        default:         return "figure.run"
+        }
+    }
 }

ios/App/CoachLiveActivity/CoachLiveActivityAttributes.swift

@@ -0,0 +1,23 @@
+// CoachLiveActivityAttributes.swift
+// Modèle partagé App ↔ Widget Extension (membre des 2 targets).
+// Définit ce que la Live Activity / Dynamic Island affiche.
+
+import ActivityKit
+import Foundation
+
+@available(iOS 16.2, *)
+struct CoachLiveActivityAttributes: ActivityAttributes {
+    /// Données dynamiques (mises à jour à chaque sample reçu de la Watch).
+    public struct ContentState: Codable, Hashable {
+        var heartRate: Double
+        var activeEnergyKcal: Double
+        var distanceMeters: Double
+        var elapsedSec: TimeInterval
+        var isLive: Bool   // true = direct ; false = perdu/en pause
+    }
+
+    /// Données fixes (set au start, non modifiables).
+    var activityLabel: String        // "Course", "Vélo", "Marche", "Renfo", ou "Séance"
+    var activitySymbol: String       // SF Symbol (figure.run, bicycle, figure.walk, dumbbell)
+    var startedAt: Date
+}

ios/App/CoachLiveActivity/CoachLiveActivityBundle.swift

@@ -0,0 +1,13 @@
+// CoachLiveActivityBundle.swift
+// Entry point @main de l'extension WidgetKit. Contient le ou les Widgets
+// exposés par cette extension. Ici juste la Live Activity du live workout.
+
+import WidgetKit
+import SwiftUI
+
+@main
+struct CoachLiveActivityBundle: WidgetBundle {
+    var body: some Widget {
+        CoachLiveActivityWidget()
+    }
+}

ios/App/CoachLiveActivity/CoachLiveActivityWidget.swift

@@ -0,0 +1,158 @@
+// CoachLiveActivityWidget.swift
+// Définition Widget pour la Live Activity (Lock Screen + Dynamic Island).
+// Structure validée sur le template Apple Xcode 26.5 (Widget Extension /
+// LiveActivity.swift) + SDK swiftinterface WidgetKit iOS 26.5
+// (DynamicIsland init signature : expanded:compactLeading:compactTrailing:minimal:).
+
+import ActivityKit
+import WidgetKit
+import SwiftUI
+
+struct CoachLiveActivityWidget: Widget {
+    var body: some WidgetConfiguration {
+        ActivityConfiguration(for: CoachLiveActivityAttributes.self) { context in
+            // ─── Lock screen / banner ─────────────────────────────────────
+            lockScreenView(context: context)
+                .activityBackgroundTint(Color.black.opacity(0.55))
+                .activitySystemActionForegroundColor(.white)
+
+        } dynamicIsland: { context in
+            DynamicIsland {
+                // Expanded UI (long-press l'île)
+                DynamicIslandExpandedRegion(.leading) {
+                    metricExpanded(label: "FC",
+                                   value: hrText(context.state),
+                                   color: .red,
+                                   symbol: "heart.fill")
+                }
+                DynamicIslandExpandedRegion(.trailing) {
+                    metricExpanded(label: "Kcal",
+                                   value: kcalText(context.state),
+                                   color: .green,
+                                   symbol: "flame.fill")
+                }
+                DynamicIslandExpandedRegion(.center) {
+                    Label(context.attributes.activityLabel,
+                          systemImage: context.attributes.activitySymbol)
+                        .font(.caption2.weight(.semibold))
+                        .foregroundStyle(.secondary)
+                }
+                DynamicIslandExpandedRegion(.bottom) {
+                    HStack(spacing: 18) {
+                        metricInline(label: "Distance",
+                                     value: distKmText(context.state),
+                                     unit: "km",
+                                     color: .orange)
+                        Divider().frame(height: 28)
+                        metricInline(label: "Durée",
+                                     value: elapsedText(context.state.elapsedSec),
+                                     unit: "",
+                                     color: .white)
+                    }
+                    .frame(maxWidth: .infinity)
+                }
+            } compactLeading: {
+                HStack(spacing: 3) {
+                    Image(systemName: "heart.fill")
+                        .foregroundStyle(.red)
+                    Text(hrText(context.state))
+                        .font(.caption2.weight(.bold).monospacedDigit())
+                }
+            } compactTrailing: {
+                Text(elapsedText(context.state.elapsedSec))
+                    .font(.caption2.weight(.semibold).monospacedDigit())
+                    .foregroundStyle(.white)
+            } minimal: {
+                Image(systemName: "heart.fill")
+                    .foregroundStyle(.red)
+                    .symbolEffect(.pulse, isActive: context.state.isLive)
+            }
+            .keylineTint(.red)
+        }
+    }
+
+    // MARK: - Lock screen layout
+
+    @ViewBuilder
+    private func lockScreenView(context: ActivityViewContext<CoachLiveActivityAttributes>) -> some View {
+        VStack(spacing: 12) {
+            HStack(spacing: 8) {
+                Image(systemName: context.attributes.activitySymbol)
+                    .foregroundStyle(.white)
+                Text(context.attributes.activityLabel)
+                    .font(.headline)
+                Spacer()
+                Image(systemName: "heart.fill")
+                    .foregroundStyle(.red)
+                    .symbolEffect(.pulse, isActive: context.state.isLive)
+                Text(context.state.isLive ? "En direct" : "Connexion perdue")
+                    .font(.caption.weight(.semibold))
+                    .foregroundStyle(context.state.isLive ? .green : .orange)
+            }
+            HStack(spacing: 14) {
+                metricBlock(value: hrText(context.state),  unit: "bpm",    color: .red)
+                metricBlock(value: kcalText(context.state), unit: "kcal",   color: .green)
+                metricBlock(value: distKmText(context.state), unit: "km",   color: .orange)
+                metricBlock(value: elapsedText(context.state.elapsedSec), unit: "", color: .white)
+            }
+        }
+        .padding(.horizontal, 14)
+        .padding(.vertical, 12)
+    }
+
+    @ViewBuilder
+    private func metricBlock(value: String, unit: String, color: Color) -> some View {
+        VStack(spacing: 0) {
+            Text(value)
+                .font(.system(.title3, design: .rounded).weight(.heavy).monospacedDigit())
+                .foregroundStyle(color)
+            if !unit.isEmpty {
+                Text(unit).font(.caption2).foregroundStyle(.secondary)
+            }
+        }
+        .frame(maxWidth: .infinity)
+    }
+
+    @ViewBuilder
+    private func metricExpanded(label: String, value: String, color: Color, symbol: String) -> some View {
+        VStack(alignment: .leading, spacing: 2) {
+            Label(label, systemImage: symbol)
+                .font(.caption2.weight(.semibold))
+                .foregroundStyle(color)
+            Text(value)
+                .font(.title2.weight(.heavy).monospacedDigit())
+                .foregroundStyle(color)
+        }
+    }
+
+    @ViewBuilder
+    private func metricInline(label: String, value: String, unit: String, color: Color) -> some View {
+        HStack(spacing: 4) {
+            Text(label).font(.caption2).foregroundStyle(.secondary)
+            Text(value).font(.callout.weight(.bold).monospacedDigit()).foregroundStyle(color)
+            if !unit.isEmpty {
+                Text(unit).font(.caption2).foregroundStyle(.tertiary)
+            }
+        }
+    }
+
+    // MARK: - Formatters (dupliqués ici car non-import de LiveStore depuis l'extension)
+
+    private func hrText(_ s: CoachLiveActivityAttributes.ContentState) -> String {
+        s.heartRate > 0 ? "\(Int(s.heartRate.rounded()))" : "—"
+    }
+    private func kcalText(_ s: CoachLiveActivityAttributes.ContentState) -> String {
+        s.activeEnergyKcal > 0 ? "\(Int(s.activeEnergyKcal.rounded()))" : "—"
+    }
+    private func distKmText(_ s: CoachLiveActivityAttributes.ContentState) -> String {
+        s.distanceMeters > 0 ? String(format: "%.2f", s.distanceMeters / 1000) : "—"
+    }
+    private func elapsedText(_ sec: TimeInterval) -> String {
+        let total = Int(sec)
+        let h = total / 3600
+        let m = (total % 3600) / 60
+        let s = total % 60
+        if h > 0 { return "\(h):\(String(format: "%02d", m)):\(String(format: "%02d", s))" }
+        return "\(m):\(String(format: "%02d", s))"
+    }
+}

ios/App/CoachLiveActivity/Info.plist

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "https://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDisplayName</key>
+	<string>Coach Live</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>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>$(MARKETING_VERSION)</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.widgetkit-extension</string>
+	</dict>
+</dict>
+</plist>