feat(acl): ACL skeleton — OpenZaak default-fill (refs #5) (#45)

services/acl/Acl.Application/Acl.Application.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

services/acl/Acl.Application/AclDefaults.cs

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+namespace Acl.Application;
+
+/// <summary>Configured ZGW defaults the ACL fills in (ADR-0003).</summary>
+public sealed class AclDefaults
+{
+    public required string Bronorganisatie { get; init; }
+    public required string VerantwoordelijkeOrganisatie { get; init; }
+    public required string Vertrouwelijkheidaanduiding { get; init; }
+    public required Uri ZaaktypeUrl { get; init; }
+}

services/acl/Acl.Application/AclService.cs

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+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, IClock clock)
+{
+    public Task<Uri> OpenZaakAsync(DomainRegistration registration, CancellationToken ct = default)
+    {
+        ArgumentNullException.ThrowIfNull(registration);
+
+        var request = new ZaakRequest(
+            defaults.Bronorganisatie,
+            defaults.VerantwoordelijkeOrganisatie,
+            defaults.Vertrouwelijkheidaanduiding,
+            defaults.ZaaktypeUrl,
+            clock.Today);
+
+        return gateway.OpenZaakAsync(request, ct);
+    }
+}

services/acl/Acl.Application/DomainRegistration.cs

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+namespace Acl.Application;
+
+/// <summary>Domain-language payload handed to the ACL. No ZGW concepts here.</summary>
+public sealed record DomainRegistration(string Bsn);

services/acl/Acl.Application/IClock.cs

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+namespace Acl.Application;
+
+/// <summary>Abstracts "today" so startdatum default-fill is deterministic in tests.</summary>
+public interface IClock
+{
+    DateOnly Today { get; }
+}

services/acl/Acl.Application/IZaakGateway.cs

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+namespace Acl.Application;
+
+/// <summary>Port to the ZGW Zaken API. Implemented in Infrastructure — the only
+/// code that talks to OpenZaak (ADR-0001).</summary>
+public interface IZaakGateway
+{
+    Task<Uri> OpenZaakAsync(ZaakRequest request, CancellationToken ct = default);
+}

services/acl/Acl.Application/ZaakRequest.cs

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+namespace Acl.Application;
+
+/// <summary>The fully default-filled zaak the gateway will create in OpenZaak.</summary>
+public sealed record ZaakRequest(
+    string Bronorganisatie,
+    string VerantwoordelijkeOrganisatie,
+    string Vertrouwelijkheidaanduiding,
+    Uri Zaaktype,
+    DateOnly Startdatum);