adds the proof of concept, going with the description "adaptive web environments"

• uses Hono for the backend
• prompt local models via Ollama and with API keys for Claude, ChatGPT, and Gemini
• simple and multi chat views
• automatically write prompt request/response to the filesystem (inefficiently fully loaded on session start)
• file editing with some basic history UI, with fs scoping and and on-disk changes propagated to the frontend as notifications (limited view for file viewing, will add file/dir tree support)
• early janky UI for creating prompts
• initial Cell for deeply serializable UI with fine-grained reactivity (classes with Svelte runes)
• initial Action API with a single code path for sync/async calls with backend/frontend symmetry (imperfect but the idea is there), pluggable mutations/handlers (simple/unfinished interface), data/schemas for declarative sources of truth (using Zod, leveraged for codegen), and multiple transports (http/websocket initially), uses JSON-RPC with MCP's flavor (no batch support, _meta on params/result)
• toggleable futuremode to get an idea of Zzz's scope as I'm currently thinking about it, as a browser+IDE+CMS+library