feat(acl): read default-fill from the store + GET/PUT /default-fill (refs #131)

services/acl/Acl.Application/AclService.cs

@@ -2,12 +2,15 @@ namespace Acl.Application;
 
 /// <summary>The ACL's single operation: open a zaak from a domain payload,
 /// default-filling the ZGW-mandatory fields (ADR-0003).</summary>
-public sealed class AclService(IZaakGateway gateway, AclDefaults defaults, IZaaktypeCatalog catalog, IClock clock)
+public sealed class AclService(IZaakGateway gateway, IDefaultFillStore fill, IZaaktypeCatalog catalog, IClock clock)
 {
     public async Task<Uri> OpenZaakAsync(DomainRegistration registration, CancellationToken ct = default)
     {
         ArgumentNullException.ThrowIfNull(registration);
 
+        // Read the current default-fill per zaak (not at construction), so a beheerder edit (S-15b)
+        // takes effect on the next zaak without a restart.
+        var defaults = fill.Current;
         var request = new ZaakRequest(
             defaults.Bronorganisatie,
             defaults.VerantwoordelijkeOrganisatie,
@@ -47,6 +50,17 @@ public sealed class AclService(IZaakGateway gateway, AclDefaults defaults, IZaak
     public Task<IReadOnlyList<ZaaktypeSummary>> ListZaaktypenAsync(CancellationToken ct = default) =>
         gateway.ListZaaktypenAsync(ct);
 
+    /// <summary>The current default-fill settings, for the beheer config viewer (S-15b).</summary>
+    public DefaultFillSettings GetDefaultFill() => fill.Current;
+
+    /// <summary>Replace the default-fill settings from the beheer portal (S-15b). Takes effect on the
+    /// next zaak (the fill is read per zaak, not cached).</summary>
+    public void UpdateDefaultFill(DefaultFillSettings settings)
+    {
+        ArgumentNullException.ThrowIfNull(settings);
+        fill.Update(settings);
+    }
+
     /// <summary>The zaak's reference (its ZGW identificatie), for the read projection (#78).</summary>
     public Task<string> GetZaakReferenceAsync(Uri zaakUrl, CancellationToken ct = default)
     {
@@ -68,6 +82,7 @@ public sealed class AclService(IZaakGateway gateway, AclDefaults defaults, IZaak
         ArgumentException.ThrowIfNullOrWhiteSpace(fileName);
         ArgumentException.ThrowIfNullOrWhiteSpace(contentType);
 
+        var defaults = fill.Current;
         var request = new DocumentRequest(
             defaults.Bronorganisatie,
             await catalog.GetInformatieobjecttypeUrlAsync(ct),