make public storage and direct upload optional

app/controllers/esign_settings_controller.rb

@@ -2,21 +2,17 @@
 
 class EsignSettingsController < ApplicationController
   def create
-    blobs =
-      params[:blob_signed_ids].map do |sid|
-        ActiveStorage::Blob.find_signed(sid)
-      end
-
     pdfs =
-      blobs.map do |blob|
-        HexaPDF::Document.new(io: StringIO.new(blob.download))
+      params[:files].map do |file|
+        HexaPDF::Document.new(io: file.open)
       end
 
     certs = Accounts.load_signing_certs(current_account)
 
     trusted_certs = [certs[:cert], certs[:sub_ca], certs[:root_ca]]
 
-    render turbo_stream: turbo_stream.replace('result', partial: 'result', locals: { pdfs:, blobs:, trusted_certs: })
+    render turbo_stream: turbo_stream.replace('result', partial: 'result',
+                                                        locals: { pdfs:, files: params[:files], trusted_certs: })
   rescue HexaPDF::MalformedPDFError
     render turbo_stream: turbo_stream.replace('result', html: helpers.tag.div('Invalid PDF', id: 'result'))
   end