Crypto trading bot: engine, brokers, backtester, dashboard, deploy

FastAPI backend with a single-strategy async engine, paper and Binance
brokers, pure-python indicators, a backtester that shares the engine's
portfolio math, and a Vue dashboard with a live WebSocket feed. Adds the
Gitea Actions CI/CD workflow that deploys to Traefik via docker_default.

frontend/src/api.js

@@ -0,0 +1,45 @@
+import axios from 'axios'
+
+const http = axios.create({ baseURL: '/api', timeout: 10000 })
+
+export const getStatus = () => http.get('/status').then((r) => r.data)
+export const getStrategies = () => http.get('/strategies').then((r) => r.data)
+export const getPositions = () => http.get('/positions').then((r) => r.data)
+export const getOrders = () => http.get('/orders').then((r) => r.data)
+export const getEvents = () => http.get('/events').then((r) => r.data)
+export const getEquity = () => http.get('/equity').then((r) => r.data)
+
+export const startBot = (payload) => http.post('/bot/start', payload).then((r) => r.data)
+export const stopBot = () => http.post('/bot/stop').then((r) => r.data)
+export const closePosition = (id, reason = 'manual') =>
+  http.post(`/positions/${id}/close`, { reason }).then((r) => r.data)
+export const placeOrder = (payload) => http.post('/orders', payload).then((r) => r.data)
+export const runBacktest = (payload) =>
+  http.post('/backtest', payload, { timeout: 60000 }).then((r) => r.data)
+
+export function openSocket({ onMessage, onOpen, onClose }) {
+  const proto = window.location.protocol === 'https:' ? 'wss' : 'ws'
+  let socket
+  let retryTimer
+  let closed = false
+
+  const connect = () => {
+    socket = new WebSocket(`${proto}://${window.location.host}/api/ws`)
+    socket.onopen = () => onOpen?.()
+    socket.onmessage = (event) => onMessage?.(JSON.parse(event.data))
+    socket.onclose = () => {
+      onClose?.()
+      if (!closed) retryTimer = setTimeout(connect, 2000)
+    }
+    socket.onerror = () => socket.close()
+  }
+  connect()
+
+  return {
+    close() {
+      closed = true
+      clearTimeout(retryTimer)
+      socket?.close()
+    },
+  }
+}