fix: add missing iOS widget target for Dynamic Island / Live Activities

The TabataGoWidget code existed on disk but had no corresponding
target in project.yml, so the widget extension was never compiled
or embedded in deployed builds — Dynamic Island never appeared.

Added:
- TabataGoWidget app-extension target (iOS 26.0) with shared models
- Embed dependency in TabataGo target
- Widget in scheme build targets for Xcode discoverability
- Fix CFBundleVersion in Info.plist (1 → 2) to match main app

Config: NSSupportsLiveActivities + FrequentUpdates, correct bundle ID
(fr.millianlmx.tabatago.widget), TARGETED_DEVICE_FAMILY: "1"

tabatago-swift/TabataGoWidget/Info.plist

@@ -19,7 +19,7 @@
 	<key>CFBundleShortVersionString</key>
 	<string>1.0</string>
 	<key>CFBundleVersion</key>
-	<string>1</string>
+	<string>2</string>
 	<key>NSExtension</key>
 	<dict>
 		<key>NSExtensionPointIdentifier</key>

tabatago-swift/project.yml

@@ -76,6 +76,8 @@ targets:
 
       - target: TabataGoWatch
         embed: true
+      - target: TabataGoWidget
+        embed: true
     settings:
       base:
         PRODUCT_BUNDLE_IDENTIFIER: fr.millianlmx.tabatago
@@ -156,6 +158,37 @@ targets:
         TARGETED_DEVICE_FAMILY: "4"
         WATCHOS_DEPLOYMENT_TARGET: "11.0"
 
+  TabataGoWidget:
+    type: app-extension
+    platform: iOS
+    deploymentTarget: "26.0"
+    sources:
+      - path: TabataGoWidget
+        excludes:
+          - "**/.DS_Store"
+      # Shared attribute types — needed by both main app and widget extension
+      - path: TabataGo/Models/WorkoutActivityAttributes.swift
+        group: TabataGoWidget
+      - path: TabataGo/Models/MusicActivityAttributes.swift
+        group: TabataGoWidget
+    info:
+      path: TabataGoWidget/Info.plist
+      properties:
+        CFBundleDisplayName: TabataGoWidget
+        CFBundleShortVersionString: "1.0"
+        CFBundleVersion: "2"
+        NSExtension:
+          NSExtensionPointIdentifier: com.apple.widgetkit-extension
+        NSSupportsLiveActivities: true
+        NSSupportsLiveActivitiesFrequentUpdates: true
+    settings:
+      base:
+        PRODUCT_BUNDLE_IDENTIFIER: fr.millianlmx.tabatago.widget
+        INFOPLIST_FILE: TabataGoWidget/Info.plist
+        IPHONEOS_DEPLOYMENT_TARGET: "26.0"
+        TARGETED_DEVICE_FAMILY: "1"
+        ENABLE_PREVIEWS: YES
+
   TabataGoTests:
     type: bundle.unit-test
     platform: iOS
@@ -185,6 +218,7 @@ schemes:
     build:
       targets:
         TabataGo: all
+        TabataGoWidget: all
     run:
       config: Debug
     archive: