feat: allow set relevance threshold on search
feat: support one box search
feat: return structured document info in answers
feat: return index status in document
feat: support batch documents purge with GCS input
feat: support batch get documents metadata by uri patterns
feat: return joined status in user event
docs: keep the API doc up-to-date with recent changes
PiperOrigin-RevId: 670771759
feat: support search summarization with citations and references
feat: add suggestion deny list import/purge APIs
feat: add engine support for multi-turn search and search APIs
docs: keep the API doc up-to-date with recent changes
PiperOrigin-RevId: 605344453
feat: support tail suggestions in completion API
feat: support image search
feat: add skip reason for search summarization
docs: keep the API doc up-to-date with recent changes
PiperOrigin-RevId: 551559583
feat: add redirected uri in search response
feat: support docx/pptx/txt/csv in allowed data format
docs: keep the API doc up-to-date with recent changes
PiperOrigin-RevId: 541013898