feat(ui): add markdown parsing with math, typewriter text streaming, scrollbar shift, and history tracking actions

feat(ui): add polished glassy design, framer motion mechanics, and api status header

feat: implement ChatGPT style UI, streaming generation, math/code blocks, citations & multi-model fallback

feat: ResearchPilot v2 — Next.js frontend, 358k embeddings pipeline, LaTeX math rendering, dual-GPU Kaggle scaling