added main readme

README.md

@@ -0,0 +1,82 @@
+# ChatSBT - Multi-Model Chat Application
+
+A modern chat application supporting multiple AI models through OpenRouter API.
+
+## Features
+
+- Chat with multiple AI models (Qwen, Deepseek, Kimi)
+- Real-time streaming responses
+- Conversation history
+- Simple REST API backend
+- Modern Svelte frontend
+
+## Tech Stack
+
+### Frontend
+- Svelte
+- DaisyUI (Tailwind component library)
+- Vite
+
+### Backend
+- Starlette (async Python web framework)
+- LangChain (LLM orchestration)
+- LangGraph (for potential future agent workflows)
+- OpenRouter API (multi-model provider)
+
+## API Endpoints
+
+| Method | Path | Description |
+|--------|------|-------------|
+| POST   | /chats | Create new chat session |
+| GET    | /chats/{chat_id} | Get chat history |
+| POST   | /chats/{chat_id}/messages | Post new message |
+| GET    | /chats/{chat_id}/stream | Stream response from AI |
+
+## Prerequisites
+
+- Python 3.11+
+- Deno
+- UV (Python package manager)
+- OpenRouter API key (set in `.env` file)
+
+## Installation
+
+1. Clone the repository
+2. Set up environment variables:
+
+```bash
+echo "OPENROUTER_API_KEY=your_key_here" > .env
+echo "OPENROUTER_BASE_URL=https://openrouter.ai/api/v1" >> .env
+```
+
+
+4. Install frontend dependencies:
+
+```bash
+cd chatsbt
+deno install
+```
+
+## Running
+
+1. Start backend server:
+
+```bash
+uv run app.py
+```
+
+2. Start the frontend (another terminal):
+
+```bash
+cd chatsbt
+deno run dev
+```
+
+The application will be available at `http://localhost:5173`
+
+## Configuration
+
+Available models:
+- `qwen/qwen3-235b-a22b-2507`
+- `deepseek/deepseek-r1-0528`
+- `moonshotai/kimi-k2`