add promt md for agents

PROMT.md

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+# Vojo — Matrix-based messenger for the Russian market
+
+## What is this
+
+This is a fork of Cinny (https://cinny.in, MIT license) rebranded as Vojo.
+Vojo is an independent messenger built on the Matrix protocol, targeting
+Russian users affected by Telegram blocking.
+
+Key value proposition: "Telegram works without VPN" — the server maintains
+Telegram bridge connections, users just open vojo.chat and chat.
+
+## Architecture
+
+- **Domain**: vojo.chat
+- **Server**: Yandex Cloud VPS, Ubuntu 24.04
+- **Backend**: Synapse (Matrix homeserver) + PostgreSQL + Caddy (reverse proxy)
+- **Bridges**: mautrix-telegram (Python v0.15.3, SOCKS5 proxy for Telegram)
+- **Client**: This repo — Cinny fork, deployed as static files via Caddy
+
+The client is served from `~/vojo/cinny/` on the server.
+Caddy serves it at `https://vojo.chat`.
+
+## Branding
+
+- **Name**: Vojo (everywhere in UI, page titles, meta tags)
+
+
+## Default homeserver
+
+All configs must point to `vojo.chat` as the default and only homeserver.
+Hide homeserver selection from the user — they don't need to know about Matrix.
+
+## Build & Deploy
+
+```bash
+npm ci
+npm run build
+# Output in dist/
+scp -r dist/* vojo-superuser@111.88.146.156:~/vojo/cinny/
+```
+
+Caddy serves from `/var/www/cinny` (symlinked to ~/vojo/cinny).
+
+## Key API Reference
+
+- Matrix Client-Server API: https://spec.matrix.org/latest/client-server-api/
+- Synapse Admin API: https://element-hq.github.io/synapse/latest/usage/administration/admin_api/
+
+## Developer
+
+Julian — C++ backend engineer. Limited frontend experience.
+Using Claude Code agents for frontend work.