Add SubQuestionSources interface for grouped per-sub-question sources. Convert QueryStreamEvent from flat interface to discriminated union with 7 variants including generating_subquestion and completed with sub_question_sources. Add subQuestionSources to QueryStreamState. Update completed event handler to populate subQuestionSources. Make sub_question_sources optional for backward compatibility with old SSE format.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Convert /query endpoint from synchronous JSON to Server-Sent Events (SSE)
streaming. The frontend now receives extracted_questions as soon as the
first LLM call completes, without waiting for retrieval, filtering, and
answer generation.
Backend:
- Add StreamingQueryEvent union type (Decomposed, Retrieving, Filtering,
Generating, Completed, Error)
- Convert /query to return StreamingResponse with SSE format
- Yield events after each pipeline phase
Frontend:
- Add queryDocumentStream() using fetch + ReadableStream
- Add useQueryDocumentStream() hook with phase-aware state
- Update LTTPage to use streaming instead of mutation
- Update ResponsePanel to show phase messages (Searching documents...,
Filtering passages..., Generating answer...)
- Update ExtractedQuestionsDisplay to accept null
Tests:
- Update query_flow e2e test to mock queryDocumentStream
- 84/85 tests pass (1 pre-existing failure from removed file-input)
- Encode filePath with encodeURIComponent to handle spaces/special chars
- Add page-level error handling in PdfViewerPage for better diagnostics
- Show PDF URL in error message to aid debugging
- Add page_number and chunk_file_path to SourceMetadata model and query router
- Add GET /chunks/{file_path}/pdf endpoint with path traversal protection
- Add View PDF links in ResponsePanel source cards and ChunkList component
- Update TypeScript types and API helper for chunk PDF URLs
- Add backend tests (5) and frontend ChunkList tests (7)
- Update enhancement plan: all 3 features complete
Sub-phase 1.5.3: Full RAG Database page with document listing, expandable chunk viewer, delete with confirmation, and document upload. Adds TypeScript types, API functions, TanStack Query hooks (useQuery + useMutation with cache invalidation), and three new components (DocumentList, ChunkList, DocumentUpload).
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Set up Vite + React 18 + TypeScript project with Tailwind CSS, Axios API client matching backend Pydantic schemas (QueryRequest, QueryResponse, IngestResponse, SourceMetadata), and TanStack Query mutation hooks for /query and /ingest endpoints.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Woody