Phase 2: UI reliability badges, changelog, eval runner — Phase 2 complete

Fix HF Spaces: tmp paths for cache and model, preload model at build

Fix: move demo.launch() outside __main__ guard for HF Spaces

Disable SSR mode for HF Spaces compatibility

Fix Gradio 6 css parameter location

Phase 13: HF Spaces deploy ready - verdict logging, clean requirements

Phase 9 polish: structured output format, HTML UI components, citation highlighting

Phase 9: Gradio UI, critic debug panel, claim table, session sidebar, MD export

Phase 2: state schema, SQLite session memory, data dir