docs: organize root files and add P1 synthesis fallback bug report

docs: add UI/UX brainstorming for mode selection

docs: reorganize documentation structure for clarity

fix: resolve all test warnings and complete DeepBoner rebrand

rebrand: DeepCritical → DeepBoner (sexual health research agent)

feat: implement dual-mode architecture (Simple + Advanced) (#45)

feat: add roadmap summary and detailed improvement plans for data sources

fix: repair Gradio accordion bug and cleanup env vars