fix: hide blocked user content

internal/service/social_graph_service.go

@@ -296,6 +296,23 @@ func (s *SocialGraphService) Relationship(ctx context.Context, viewerID, targetI
 	return out, nil
 }
 
+// IsBlockedBetween reports whether a block exists in EITHER direction
+// between two users — viewer→target or target→viewer. Content visibility
+// is gated on this (a block either way hides the target's profile feed,
+// tagged posts, and follower lists from the viewer), mirroring the
+// "viewerBlocked || targetBlocked" rule RequestFollow enforces. Returns
+// false for anonymous viewers (empty id) and for the self case.
+func (s *SocialGraphService) IsBlockedBetween(ctx context.Context, a, b string) (bool, error) {
+	if a == "" || b == "" || a == b {
+		return false, nil
+	}
+	aBlockedB, bBlockedA, err := s.blocks.BlockState(ctx, a, b)
+	if err != nil {
+		return false, err
+	}
+	return aBlockedB || bBlockedA, nil
+}
+
 // Counts returns the accepted-follower and accepted-following totals for
 // a user.
 func (s *SocialGraphService) Counts(ctx context.Context, userID string) (followers, following int, err error) {