SF-74: Domain/Application — UserPreferences DTO, interface, Sender role constant

EnvelopeGenerator.Application/Common/Interfaces/Services/IUserPreferencesService.cs

@@ -14,16 +14,16 @@ public interface IUserPreferencesService
     /// Always returns a valid object — never throws, never returns null.
     /// Returns defaults if no entry exists in cache.
     /// </summary>
-    /// <param name="username">The sender's username (ClaimTypes.Name from JWT).</param>
+    /// <param name="id"></param>
     /// <param name="ct">Cancellation token.</param>
-    Task<UserPreferencesDto> GetAsync(string username, CancellationToken ct = default);
+    Task<UserPreferencesDto> GetOrCreateAsync(string id, CancellationToken ct = default);
 
     /// <summary>
     /// Persists the given preferences for the user in the distributed cache.
     /// Failures are non-fatal and silently ignored.
     /// </summary>
-    /// <param name="username">The sender's username (ClaimTypes.Name from JWT).</param>
+    /// <param name="id"></param>
     /// <param name="preferences">The preferences to persist.</param>
     /// <param name="ct">Cancellation token.</param>
-    Task SaveAsync(string username, UserPreferencesDto preferences, CancellationToken ct = default);
+    Task SaveAsync(string id, UserPreferencesDto preferences, CancellationToken ct = default);
 }