From 207365539745cc8800284b36de65c5d93e78360f Mon Sep 17 00:00:00 2001
From: Niek Otten <not@respellion.nl>
Date: Fri, 24 Jul 2026 15:34:53 +0200
Subject: [PATCH] feat(acl): implement default-fill store update (refs #131)

---
 services/acl/Acl.Application/InMemoryDefaultFillStore.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/services/acl/Acl.Application/InMemoryDefaultFillStore.cs b/services/acl/Acl.Application/InMemoryDefaultFillStore.cs
index de4ede6..b6f5d5a 100644
--- a/services/acl/Acl.Application/InMemoryDefaultFillStore.cs
+++ b/services/acl/Acl.Application/InMemoryDefaultFillStore.cs
@@ -14,6 +14,7 @@ public sealed class InMemoryDefaultFillStore(DefaultFillSettings seed) : IDefaul
 
     public void Update(DefaultFillSettings settings)
     {
-        // ponytail: red stub — real assignment lands in the green commit.
+        ArgumentNullException.ThrowIfNull(settings);
+        lock (_gate) _current = settings;
     }
 }