diff --git a/clients/apple/Punktfunk.xcodeproj/xcshareddata/xcschemes/Punktfunk.xcscheme b/clients/apple/Punktfunk.xcodeproj/xcshareddata/xcschemes/Punktfunk.xcscheme
index 7a855ba4..d994e08f 100644
--- a/clients/apple/Punktfunk.xcodeproj/xcshareddata/xcschemes/Punktfunk.xcscheme
+++ b/clients/apple/Punktfunk.xcodeproj/xcshareddata/xcschemes/Punktfunk.xcscheme
@@ -30,7 +30,7 @@
       shouldAutocreateTestPlan = "YES">
    </TestAction>
    <LaunchAction
-      buildConfiguration = "Debug"
+      buildConfiguration = "Release"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
diff --git a/clients/apple/Sources/PunktfunkClient/Session/SessionModel.swift b/clients/apple/Sources/PunktfunkClient/Session/SessionModel.swift
index 4e998fcf..9ed343a9 100644
--- a/clients/apple/Sources/PunktfunkClient/Session/SessionModel.swift
+++ b/clients/apple/Sources/PunktfunkClient/Session/SessionModel.swift
@@ -210,7 +210,13 @@ final class SessionModel: ObservableObject {
         // metadata we apply (Step 2) when it IS HDR.
         let displayHDR: Bool = {
             #if os(macOS)
-                return (NSScreen.main?.maximumExtendedDynamicRangeColorComponentValue ?? 1.0) > 1.0
+                // POTENTIAL, not current, headroom: `maximumExtendedDynamicRangeColorComponentValue`
+                // is the CURRENTLY-ALLOCATED headroom, which macOS hands out on demand — on an idle
+                // SDR desktop it reads 1.0 even with HDR enabled and active (external HDR displays
+                // like the Samsung G95SC allocate EDR only when content asks). Gating on it means an
+                // HDR monitor never gets advertised at connect time. `maximumPotential…` is the
+                // mode-independent capability (the macOS analogue of the tvOS/iOS gates below).
+                return (NSScreen.main?.maximumPotentialExtendedDynamicRangeColorComponentValue ?? 1.0) > 1.0
             #elseif os(tvOS)
                 // NOT the EDR headroom here: on tvOS that reflects the CURRENT output mode, and
                 // Apple's recommended setup runs an SDR home screen with Match Content — an