- Removed dependencies on analysis_results table
- Implemented workflow_history storage in Data Persistence Service
- Updated Workflow Orchestrator to save workflow snapshots to history
- Refactored Frontend to consume workflow_history and fetch reports via VGCS
- Fixed Data Providers (Tushare, YFinance) to report output paths in metadata
- Updated documentation and task status
- Fix `simple_test_analysis` template in E2E test setup to align with Orchestrator's data fetch logic.
- Implement and verify additional E2E scenarios:
- Scenario C: Partial Provider Failure (verified error propagation fix in Orchestrator).
- Scenario D: Invalid Symbol input.
- Scenario E: Analysis Module failure.
- Update `WorkflowStateMachine::handle_report_failed` to correctly scope error broadcasting to the specific task instead of failing effectively silently or broadly.
- Update testing strategy documentation to reflect completed Phase 4 testing.
- Skip Scenario B (Orchestrator Restart) as persistence is not yet implemented (decision made to defer persistence).
