v1.2.7

Changes

• Optimize streaming response handling by introducing terminal event constants for different app types (#161)
  • Chat/Completion streams now terminate on message_end or error
  • Chatflow/Workflow streams now terminate on workflow_finished or error
  • Fixes issue where Chatflow events after message_end were being lost
• Add missing fields to DetailedDocumentResponse: doc_type, doc_metadata, summary_index_status, need_summary (#160)