diff --git a/apps/HeartCoach/Shared/Models/ProactiveNotificationType.swift b/apps/HeartCoach/Shared/Models/ProactiveNotificationType.swift
new file mode 100644
index 0000000..fd756f2
--- /dev/null
+++ b/apps/HeartCoach/Shared/Models/ProactiveNotificationType.swift
@@ -0,0 +1,43 @@
+// ProactiveNotificationType.swift
+// ThumpCore
+//
+// Shared proactive notification identifiers and metadata.
+// Used by both iOS notification scheduling and shared persistence.
+//
+// Platforms: iOS 17+, watchOS 10+
+
+import Foundation
+
+/// All proactive notification types added by the gap analysis.
+enum ProactiveNotificationType: String, Sendable, CaseIterable {
+    case morningBriefing
+    case bedtimeWindDown
+    case postWorkoutRecovery
+    case trainingOpportunity
+    case illnessDetection
+    case eveningRecovery
+    case reboundConfirmation
+
+    var threadIdentifier: String {
+        "com.thump.alerts.\(rawValue)"
+    }
+
+    /// Stable identifier — one per type, no UUID, so scheduling replaces
+    /// any existing pending notification of the same type.
+    var notificationIdentifier: String {
+        "com.thump.\(rawValue)"
+    }
+
+    /// Priority for daily budget arbitration (higher = more important).
+    var priority: Int {
+        switch self {
+        case .illnessDetection:     return 100
+        case .morningBriefing:      return 90
+        case .reboundConfirmation:  return 80
+        case .trainingOpportunity:  return 70
+        case .eveningRecovery:      return 60
+        case .bedtimeWindDown:      return 50
+        case .postWorkoutRecovery:  return 40
+        }
+    }
+}
diff --git a/apps/HeartCoach/iOS/Services/ProactiveNotificationService.swift b/apps/HeartCoach/iOS/Services/ProactiveNotificationService.swift
index c3a7c09..be73652 100644
--- a/apps/HeartCoach/iOS/Services/ProactiveNotificationService.swift
+++ b/apps/HeartCoach/iOS/Services/ProactiveNotificationService.swift
@@ -13,42 +13,6 @@
 import Foundation
 import UserNotifications
 
-// MARK: - Notification Types
-
-/// All proactive notification types added by the gap analysis.
-enum ProactiveNotificationType: String, Sendable, CaseIterable {
-    case morningBriefing
-    case bedtimeWindDown
-    case postWorkoutRecovery
-    case trainingOpportunity
-    case illnessDetection
-    case eveningRecovery
-    case reboundConfirmation
-
-    var threadIdentifier: String {
-        "com.thump.alerts.\(rawValue)"
-    }
-
-    /// Stable identifier — one per type, no UUID, so scheduling replaces
-    /// any existing pending notification of the same type (GPT-5.4 fix #2).
-    var notificationIdentifier: String {
-        "com.thump.\(rawValue)"
-    }
-
-    /// Priority for daily budget arbitration (higher = more important).
-    var priority: Int {
-        switch self {
-        case .illnessDetection:     return 100
-        case .morningBriefing:      return 90
-        case .reboundConfirmation:  return 80
-        case .trainingOpportunity:  return 70
-        case .eveningRecovery:      return 60
-        case .bedtimeWindDown:      return 50
-        case .postWorkoutRecovery:  return 40
-        }
-    }
-}
-
 // MARK: - Configuration
 
 /// All thresholds in one testable struct — no magic numbers (Gemini design).