chore: runtime updates and fixes

chore: sync README from HF Spaces updates

Update README.md

Update README.md

fix(spaces): restore main HearthNet Space frontmatter (app_file: app.py)

fix: HF Space front matter — valid colorTo + short description under 60 chars

feat(nemotron-space): companion Space branch for HearthNet-Nemotron

feat: 15 targeted improvements — RAG persistence, bus failover, agent hardening, deps sync

fix(docs): repair broken video link and screenshot image paths for HF/GH deployment

feat(rag): docs ingestion + UI/bus enhancements (P3 continuation)

feat(ui+docs): surface the agent — showcase reveal + Agent/sponsor badges

docs: comprehensive README refresh - emphasize llama.cpp, routing features, 390+ tests, transparency

fix: llm.chat IndexError (lazy Ollama warm + safe _resolve_backend fallback) + chat self-send returns direct

docs: real semantic RAG, wired sponsor backends, multi-model contract note

chore: new tests, security audit, coverage enhancements, requirements update

Update README.md

docs: Update README with built artifacts and GitHub links

Build: Add Android APK, PWA, and deployment guide

feat: Nemotron Space, Modal backend, sponsor prize targeting, improvements doc

docs: full README rewrite for hackathon — YAML tags, screenshots, author links, prize targets

feat: Phase 3 wired + plant tool + MoE bus + model distribution always-on

feat: Phase 2 (M14-M25, X05-X07) + Phase 3 experimental (M26-M31) + E2E tests + docs

Update README.md

initial commit