refactor(core): add IContentPublishOperationService injection to ContentService

Adds field, property, and constructor parameter for the new
publish operation service. Obsolete constructors use lazy
resolution for backward compatibility.

Part of ContentService refactoring Phase 5.

src/Umbraco.Core/Services/ContentService.cs

@@ -63,6 +63,10 @@ public class ContentService : RepositoryService, IContentService
     private readonly IContentMoveOperationService? _moveOperationService;
     private readonly Lazy<IContentMoveOperationService>? _moveOperationServiceLazy;
 
+    // Publish operation service fields (for Phase 5 extracted publish operations)
+    private readonly IContentPublishOperationService? _publishOperationService;
+    private readonly Lazy<IContentPublishOperationService>? _publishOperationServiceLazy;
+
     /// <summary>
     /// Gets the query operation service.
     /// </summary>
@@ -87,6 +91,14 @@ public class ContentService : RepositoryService, IContentService
         _moveOperationService ?? _moveOperationServiceLazy?.Value
         ?? throw new InvalidOperationException("MoveOperationService not initialized. Ensure the service is properly injected via constructor.");
 
+    /// <summary>
+    /// Gets the publish operation service.
+    /// </summary>
+    /// <exception cref="InvalidOperationException">Thrown if the service was not properly initialized.</exception>
+    private IContentPublishOperationService PublishOperationService =>
+        _publishOperationService ?? _publishOperationServiceLazy?.Value
+        ?? throw new InvalidOperationException("PublishOperationService not initialized. Ensure the service is properly injected via constructor.");
+
     #region Constructors
 
     [Microsoft.Extensions.DependencyInjection.ActivatorUtilitiesConstructor]
@@ -111,7 +123,8 @@ public class ContentService : RepositoryService, IContentService
         IContentCrudService crudService,
         IContentQueryOperationService queryOperationService,  // NEW PARAMETER - Phase 2 query operations
         IContentVersionOperationService versionOperationService,  // NEW PARAMETER - Phase 3 version operations
-        IContentMoveOperationService moveOperationService)  // NEW PARAMETER - Phase 4 move operations
+        IContentMoveOperationService moveOperationService,  // NEW PARAMETER - Phase 4 move operations
+        IContentPublishOperationService publishOperationService)  // NEW PARAMETER - Phase 5 publish operations
         : base(provider, loggerFactory, eventMessagesFactory)
     {
         _documentRepository = documentRepository;
@@ -151,6 +164,11 @@ public class ContentService : RepositoryService, IContentService
         ArgumentNullException.ThrowIfNull(moveOperationService);
         _moveOperationService = moveOperationService;
         _moveOperationServiceLazy = null;  // Not needed when directly injected
+
+        // Phase 5: Publish operation service (direct injection)
+        ArgumentNullException.ThrowIfNull(publishOperationService);
+        _publishOperationService = publishOperationService;
+        _publishOperationServiceLazy = null;  // Not needed when directly injected
     }
 
     [Obsolete("Use the non-obsolete constructor instead. Scheduled removal in v19.")]
@@ -217,6 +235,11 @@ public class ContentService : RepositoryService, IContentService
         _moveOperationServiceLazy = new Lazy<IContentMoveOperationService>(() =>
             StaticServiceProvider.Instance.GetRequiredService<IContentMoveOperationService>(),
             LazyThreadSafetyMode.ExecutionAndPublication);
+
+        // Phase 5: Lazy resolution of IContentPublishOperationService
+        _publishOperationServiceLazy = new Lazy<IContentPublishOperationService>(() =>
+            StaticServiceProvider.Instance.GetRequiredService<IContentPublishOperationService>(),
+            LazyThreadSafetyMode.ExecutionAndPublication);
     }
 
     [Obsolete("Use the non-obsolete constructor instead. Scheduled removal in v19.")]
@@ -282,6 +305,11 @@ public class ContentService : RepositoryService, IContentService
         _moveOperationServiceLazy = new Lazy<IContentMoveOperationService>(() =>
             StaticServiceProvider.Instance.GetRequiredService<IContentMoveOperationService>(),
             LazyThreadSafetyMode.ExecutionAndPublication);
+
+        // Phase 5: Lazy resolution of IContentPublishOperationService
+        _publishOperationServiceLazy = new Lazy<IContentPublishOperationService>(() =>
+            StaticServiceProvider.Instance.GetRequiredService<IContentPublishOperationService>(),
+            LazyThreadSafetyMode.ExecutionAndPublication);
     }
 
     #endregion