v2.2.1: frontend closed-source + Docker one-click deploy

- Remove frontend source code (now in private repo)
- Add pre-built frontend/dist/ with Nginx serving
- Simplify docker-compose.yml (no Node.js build needed)
- Update README with docs index and Docker deploy guide
- Add admin order list and AI analysis stats tabs
- Add quick trade API routes
- Clean up redundant files (package-lock.json, yarn.lock, .iml)
- Add GitHub Actions workflow for frontend update automation

quantdinger_vue/README.md

@@ -1,62 +0,0 @@
-# QuantDinger Web UI (Vue 2)
-
-This is the QuantDinger frontend web UI built with **Vue 2** + **Ant Design Vue**. It connects to the Python backend (`backend_api_python/`) through HTTP APIs to provide charts, indicators, backtests, AI analysis, and strategy management.
-
-> This UI is based on the open-source `ant-design-vue-pro` ecosystem, heavily adapted for QuantDinger.
-
-## What you get
-
-- **Dashboards**: summary views and operational panels
-- **Indicator analysis**: Kline charts + indicator editing + backtest history
-- **AI analysis**: multi-agent reports (optional LLM/search, configured on backend)
-- **Trading assistant**: strategy lifecycle + positions/records (depending on backend capability)
-- **Local auth**: login with backend-configured admin credentials
-
-## Quick start (local development)
-
-### Prerequisites
-
-- Node.js 16+ recommended
-- Backend running at `http://localhost:5000` (see `backend_api_python/README.md`)
-
-### 1) Install dependencies
-
-```bash
-cd quantdinger_vue
-npm install
-```
-
-### 2) Start dev server
-
-```bash
-npm run serve
-```
-
-Dev server runs at `http://localhost:8000`.
-
-### 3) API proxy (important)
-
-In dev mode, this project proxies `/api/*` to the backend:
-
-- Proxy config: `quantdinger_vue/vue.config.js`
-- Default target: `http://localhost:5000`
-
-If your backend runs on a different host/port, update `vue.config.js` accordingly.
-
-## Production build
-
-```bash
-npm run build
-```
-
-The output will be generated under `quantdinger_vue/dist/`.
-
-## Notes
-
-- **CORS**: when using the dev proxy, you typically don’t need extra CORS config.
-- **Login**: use the credentials defined in `backend_api_python/.env` (`ADMIN_USER` / `ADMIN_PASSWORD`).
-
-## License
-
-Apache License 2.0. See repository root `LICENSE`.
-