FIX: should properly be checking for empty

Author: SamSaffron

lib/ai_helper/assistant.rb

@@ -134,7 +134,7 @@ def generate_prompt(
               json_summary_schema_key = bot.persona.response_format&.first.to_h
               helper_chunk = partial.read_buffered_property(json_summary_schema_key["key"]&.to_sym)
 
-              if helper_chunk.present?
+              if !helper_chunk.nil? && !helper_chunk.empty?
                 helper_response << helper_chunk
                 block.call(helper_chunk) if block
               end

lib/summarization/fold_content.rb

@@ -118,7 +118,7 @@ def fold(items, user, &on_partial_blk)
               partial_summary =
                 partial.read_buffered_property(json_summary_schema_key["key"]&.to_sym)
 
-              if partial_summary.present?
+              if !partial_summary.nil? && !partial_summary.empty?
                 summary << partial_summary
                 on_partial_blk.call(partial_summary) if on_partial_blk
               end