fix memo selection

internal/memos/client.go

@@ -103,15 +103,3 @@ func (c *Client) DownloadAttachment(ctx context.Context, att Attachment) ([]byte
 	}
 	return data, nil
 }
-
-// GetRandomMemo fetches a single memo without any filter (for full fallback).
-func (c *Client) GetRandomMemo(ctx context.Context) (*Memo, error) {
-	resp, err := c.ListMemos(ctx, "", 1, "")
-	if err != nil {
-		return nil, err
-	}
-	if len(resp.Memos) == 0 {
-		return nil, nil
-	}
-	return resp.Memos[0], nil
-}