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/components/EventLog.vue

@@ -0,0 +1,27 @@
+<script setup>
+import { fmtTime } from '../format'
+
+defineProps({
+  events: { type: Array, required: true },
+})
+
+const levelClass = {
+  info: 'text-slate-300',
+  trade: 'text-sky-300',
+  error: 'text-rose-300',
+}
+</script>
+
+<template>
+  <div class="card">
+    <h2 class="mb-3 font-semibold">Activity</h2>
+    <div class="max-h-72 space-y-1 overflow-y-auto font-mono text-xs">
+      <div v-for="e in events" :key="e.id" class="flex gap-2 border-b border-edge/40 py-1">
+        <span class="shrink-0 text-slate-500">{{ fmtTime(e.created_at) }}</span>
+        <span class="shrink-0" :class="levelClass[e.level] || 'text-slate-300'">[{{ e.level }}]</span>
+        <span :class="levelClass[e.level] || 'text-slate-300'">{{ e.message }}</span>
+      </div>
+      <div v-if="!events.length" class="py-6 text-center text-slate-500">No activity yet</div>
+    </div>
+  </div>
+</template>