🐛 Fix some issues in AP

DysonNetwork.Sphere/ActivityPub/ActivityPubActivityProcessor.cs

@@ -114,7 +114,7 @@ public class ActivityPubActivityProcessor(
         var existingRelationship = await db.FediverseRelationships
             .FirstOrDefaultAsync(r =>
                 r.ActorId == actor.Id &&
-                r.TargetActorId == actor.Id);
+                r.TargetActorId == localActor.Id);
         
         if (existingRelationship is { State: RelationshipState.Accepted })
         {
@@ -168,18 +168,34 @@ public class ActivityPubActivityProcessor(
             .Include(r => r.Actor)
             .Include(r => r.TargetActor)
             .FirstOrDefaultAsync(r =>
-                r.TargetActorId == actor.Id && 
-                r.State == RelationshipState.Pending);
+                r.TargetActorId == actor.Id);
 
         if (relationship == null)
         {
-            logger.LogWarning("No pending relationship found for accept");
+            // Assume objectUri is the local actor URI that was followed
+            var localActor = await db.FediverseActors.FirstOrDefaultAsync(a => a.Uri == objectUri);
+            if (localActor == null)
+            {
+                logger.LogWarning("Local actor not found for accept object: {ObjectUri}", objectUri);
                 return false;
             }
-        
+            relationship = new SnFediverseRelationship
+            {
+                ActorId = localActor.Id,
+                TargetActorId = actor.Id,
+                State = RelationshipState.Accepted,
+                IsFollowing = true,
+                IsFollowedBy = false,
+                FollowedAt = SystemClock.Instance.GetCurrentInstant()
+            };
+            db.FediverseRelationships.Add(relationship);
+        }
+        else
+        {
             relationship.State = RelationshipState.Accepted;
             relationship.IsFollowing = true;
             relationship.FollowedAt = SystemClock.Instance.GetCurrentInstant();
+        }
 
         await db.SaveChangesAsync();
         

DysonNetwork.Sphere/ActivityPub/ActivityPubDeliveryService.cs

@@ -148,8 +148,19 @@ public class ActivityPubDeliveryService(
             }
         };
 
+        var relationship = await db.FediverseRelationships
+            .FirstOrDefaultAsync(r =>
+                r.ActorId == localActor.Id &&
+                r.TargetActorId == targetActor.Id);
+        if (relationship == null) return false;
 
-        return await SendActivityToInboxAsync(activity, targetActor.InboxUri, actorUrl);
+        var success = await SendActivityToInboxAsync(activity, targetActor.InboxUri, actorUrl);
+        if (!success) return success;
+        
+        db.Remove(relationship);
+        await db.SaveChangesAsync();
+
+        return success;
     }
 
     public async Task<bool> SendCreateActivityAsync(SnPost post)