Fix: Replace gr.Sidebar() with gr.Accordion() for HF Spaces Gradio 4.44.1

Upgrade Gradio to 4.50.0 for Sidebar support

Rebuild: Update timestamp to trigger HF Spaces rebuild

Fix: Move gr.Sidebar() to top level (cannot be nested in gr.Row)

Story 11.8: Fix PDF Export JSON Bug

fix: move Custom Prompts tab outside conditional block and fix indentation

feat: add Custom Prompts tab with download/upload/validation (Story 11.6.1)

fix: use stage_outputs instead of stages for markdown extraction in PDF generation

fix: use actual backend run_id instead of generating new random UUID

fix: case-insensitive quality tag check for few-shot export

fix: call backend API for PDF generation

feat: add Name column to experiments table

chore: force HF Space rebuild by updating requirements.txt

debug: add version identifier to startup logs to verify deployment

chore: add version comment to force HF Space cache invalidation

chore: trigger HF Space rebuild

fix: show unique hash (last 8 chars) instead of common prefix in experiment IDs

fix: use lambda wrapper for demo.load to avoid argument mismatch

fix: enhance markdown type validation with detailed logging

fix: parse experiments response correctly and use camelCase field names

fix: add type validation to prevent dict/JSON in PDF exports

fix: preserve markdown field for beautiful PDF formatting

fix: enable fetch_saved_experiments to load from database

feat: add PDF export functionality for Download All Stages

fix: enable database save functionality

fix: use /run/local endpoint with pdf_text parameter for Railway backend

docs: add Issue 4 - Railway backend endpoint mismatches and solutions

fix: update to /run endpoint and disable experiment persistence for Railway backend

docs: add comprehensive HF Spaces deployment troubleshooting guide

fix: pin pydantic<2.9 to avoid additionalProperties bool bug

debug: add startup error logging to diagnose 500 error

fix: remove max_height parameter from Dataframe for Gradio 4.44.1 compatibility

fix: downgrade to Gradio 4.44.1 (stable) to fix CSS/HTTP2 loading issues on HF Spaces

test: try gr.themes.Soft() instead of Default with custom colors

test: deploy minimal Gradio app to diagnose HF Spaces issue

fix: use explicit Default theme with custom colors instead of Soft theme

fix: replace community theme with built-in gr.themes.Soft() for HF Spaces compatibility

fix: replace gr.Sidebar() with gr.Column() for Gradio 5.x compatibility

fix: pin huggingface_hub<1.0.0 for Gradio 5.x compatibility

fix: correct app_file to app.py in README

Initial deployment: Innovation Intelligence Pipeline