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

Add all-to-all internet mesh over relay hub (P1-P3) + user-story screenshot proof

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

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)

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

chore: remove temp patch scripts

Build: Add Android APK, PWA, and deployment guide