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

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

feat(nemotron): refresh catalogue to Nemotron 3 Nano agentic family

feat(agent): wire real ReAct tool-calling loop into Ask tab (M21)

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

fix: Python 3.10 compat — replace datetime.UTC with timezone.utc shim

Quality improvements: Unicode chars, Token class, imports, type hints, formatting

fix: complete easter egg rewrite using Gradio 6 js= API

Fix: Additional ruff auto-fixes (30 issues fixed)

Fix: Additional ruff issues - RUF006, RUF002/RUF003, and Unicode

fix: re-apply Python 3.10 UTC fixes across all 10 files

Fix: Ruff linting issues - SIM/E402/F401 violations

fix: re-apply Python 3.10 UTC compatibility (was reverted by formatter)

fix: easter-egg ticker now properly works in Gradio app

fix: Python 3.10 compatibility - replace UTC import with timezone.utc

feat: WebLLM browser agent with PeerJS mesh, HybridRAG, news signals, and easter-egg ticker

fix(llm): single multi-model llm.chat so sponsor backends are reachable

feat: federated RAG + comprehensive security fixes

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

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

fix: asyncio.get_running_loop() across backends; expand mesh/capability/model UI docs

fix: ZeroGPU CUDA init, corpus scan sync, extended user story tests

fix: Python 3.10 compatibility for HF Space (Python 3.10 env)

feat: impl_ref §22 gap-fill — all missing symbols implemented

feat: X01/X02/X06/X09/M02/M22 wiring + conformance suite + mobile PWA + 22 new tests

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

fix: 0 test failures; FileService; real RagService; emergency probe; chat return

feat: BitTorrent-style model weight distribution; no fake LLM in production

feat: impl_ref gaps closed — Nemotron/OpenBMB backends, spec refs, extended UI, HOWTO, multi-node E2E

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

feat: implement all M01-M13, X01-X04 modules + quality gate fixes

Build Phase 1 HearthNet Space