Add tenant context interfaces for multi-tenant operations and user context management. Refactor logging in webhook endpoints and improve async method calls in repositories for better readability and performance.

src/Scanner/StellaOps.Scanner.WebService/Tenancy/ITenantContext.cs

@@ -0,0 +1,12 @@
+namespace StellaOps.Scanner.WebService.Tenancy;
+
+/// <summary>
+/// Provides the current tenant context for multi-tenant operations.
+/// </summary>
+public interface ITenantContext
+{
+    /// <summary>
+    /// Gets the current tenant ID.
+    /// </summary>
+    string TenantId { get; }
+}

src/Scanner/StellaOps.Scanner.WebService/Tenancy/IUserContext.cs

@@ -0,0 +1,17 @@
+namespace StellaOps.Scanner.WebService.Tenancy;
+
+/// <summary>
+/// Provides the current user context for audit and authorization.
+/// </summary>
+public interface IUserContext
+{
+    /// <summary>
+    /// Gets the current user ID.
+    /// </summary>
+    string UserId { get; }
+
+    /// <summary>
+    /// Gets the current user's display name.
+    /// </summary>
+    string? DisplayName { get; }
+}