feat: implement dynamic client-side sandbox playground for 9 academic routing models directly in static documentation page

docs: integrate 9 paper summaries into the live Reference Hub in index.html

docs: fix missing closing div tag in benchmarks tab causing self-healing content to hide

docs: add evaluation summary and github repository navigation link

docs: fix unclosed HTML tags in docs/index.html causing nested tabs hiding

docs: integrate 9 LLM routing papers with local PDFs and detailed bibliography

docs: upgrade ELI5 summaries to formal academic frameworks for FrugalGPT and RouterBench

docs: add Plain English Analogy / ELI5 cards for FrugalGPT and RouterBench to make academic theories intuitive

docs: expand technical hub with detailed routing policies, evaluation harness guide, and playground features

docs: simplify PDF paper links to standard target=_blank browser tabs

docs: implement inline PDF preview modal overlay to completely prevent file downloads

docs: remove project plan PDF, change downloads to target='_blank' browser preview links

docs: rename cost efficiency paper to Hybrid LLM, add BibTeX references section, and update PDF paths to docs/article/

style: convert academic documentation hub to premium light theme

fix: remove polyfill.io script to avoid browser security alert and sign-in prompts

docs: add research papers download hub, flow charts, and Pareto images to web docs and README

feat: add interactive academic documentation hub and Docker deployment config