docs: add mathematical formulas, quality retention algorithm, and individual prompt evaluation examples

feat: add HF real workload datasets (10k), streaming benchmark results, and BYOK budget tests

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 project description subtitle to README and academic foundations

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

feat: implement server-side FrugalGPT cascade router, prompt adaptation, and offline Pareto sweeps

Fix SQLite, OpenAI mock, circuit breaker fallback for pinned models, cache isolation, prefix cache answers, docs relative paths, and integration tests

docs: add architecture sequence flow, benchmark report matrix, and failure injection policies