Fix loading indicator: set isTyping before API call, not after

Simplify SSE: UUID-only dependency, remove isTyping gate. Event replay architecture

Fix message display: properly handle session migration from UI session to backend UUID

Fix SSE double-emit: eliminate numeric session identity, use UUID only

ARCHITECTURAL FIX: Use single UUID session identity everywhere - removed http_session_key hack

CRITICAL FIX: Implement real SSE event streaming with ProgressManager

Replace polling with Server-Sent Events (SSE) for real-time progress updates

Fix response template with strict format, fix data file downloads with proper links, fix plot URL formatting

Add live tool execution progress, fix malformed responses, enable dataset/model downloads

Fix progress polling to only occur during active workflows - use useEffect with proper cleanup

Fix progress bar to show latest step, visualizations in assets, model names, data files, and response formatting

Add file path removal, fix progress tracking, add Assets sidebar

Fix visibility of changes: strengthen file path prohibition, prepend metrics to summary, add progress polling

Fix model metrics display, add baseline comparison, improve formatting & progress indicators

Fix TypeScript error: remove invalid role check in user message branch

Fix plot rendering: extract from workflow_history, remove debug code, update system prompt

debug: Add always-visible red debug box

debug: Add visible debug section for plots

fix: Extract plots from workflow_history like reports

debug: Add console logging for plot extraction

feat: Add inline plot viewing in chat

fix: Clarify report intent and fix parameter issues

fix: Show report view buttons for all analysis responses

fix: Fix module import paths for Render deployment

fix: Resolve blank modal issue when viewing YData Profiling reports

fix: Remove all remaining Sweetviz references

docs: Clean up repository and update README

feat: Initial commit - Data Science Agent with React frontend and FastAPI backend