Stufe 4c (#764): Bezeichner auf Englisch - Typen, Methoden, Felder, Parameter, Locals, Testnamen

Mit Roslyn umbenannt (Verweise folgen, Zeichenketten bleiben unberuehrt).
Nicht umbenannt, weil gespeichert oder ueber die API gebunden (Stufe 4e):
Properties, Record-Parameter, Enum-Member sowie die Parameter der
Endpunkt-Handler (Routen-/Query-Bindung ueber den Namen). Die JSON-Felder
anonymer Objekte bleiben ausdruecklich benannt (JsonFilter: pfad).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/ClawdDotNet.Core.Tests/Deploymentcenter/DeploymentcenterApiTests.cs

@@ -7,7 +7,7 @@ namespace ClawdDotNet.Core.Tests.Deploymentcenter;
 public sealed class DeploymentcenterApiTests
 {
     [Fact]
-    public async Task Token_geht_als_Bearer_mit()
+    public async Task Token_is_sent_as_bearer()
     {
         var handler = new CapturingHandler();
         using var api = new DeploymentcenterApi("https://dc.example", "tok-1", new HttpClient(handler));
@@ -18,7 +18,7 @@ public sealed class DeploymentcenterApiTests
     }
 
     [Fact]
-    public async Task Fehlerumschlag_wird_zu_einer_Ausnahme_mit_Code()
+    public async Task Error_envelope_becomes_an_exception_with_code()
     {
         var handler = new CapturingHandler(HttpStatusCode.Unauthorized,
             """{"status":"error","error":{"code":"unauthorized","message":"Kein gueltiges Token."}}""");
@@ -37,7 +37,7 @@ public sealed class DeploymentcenterApiTests
     /// does not answer with a matching HTTP code everywhere.
     /// </summary>
     [Fact]
-    public async Task Fehlerumschlag_mit_HTTP_200_zaehlt_trotzdem()
+    public async Task Error_envelope_with_HTTP_200_still_counts()
     {
         var handler = new CapturingHandler(HttpStatusCode.OK,
             """{"status":"error","error":{"code":"rate_limited","message":"Zu viele."}}""");
@@ -52,14 +52,14 @@ public sealed class DeploymentcenterApiTests
     }
 
     [Fact]
-    public void Nicht_HTTPS_wird_abgelehnt()
+    public void Non_HTTPS_is_rejected()
     {
         // Over an unsecured connection the token would go in plain text.
         Should.Throw<ArgumentException>(() => new DeploymentcenterApi("http://dc.example", "tok"));
     }
 
     [Fact]
-    public void Localhost_darf_auch_ohne_TLS()
+    public void Localhost_is_allowed_without_TLS()
     {
         // A local test installation rarely has a certificate, and nobody can listen in
         // on the own machine.