Initial CoinOX instance: coin-margined options + USDT hedge.

Forked from crypto_monitor OKX instance (copy-only). Keeps standalone options, perp-options and options-options hedge; drops standalone perp entrypoints; forces coin margin; adds sim wallets; default port 5010.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/strategy/templates/strategy_roll_docs.html

@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <script src="/static/instance_theme.js?v=4"></script>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>顺势加仓 · 详细说明 · {{ exchange_display }}</title>
+    <link rel="stylesheet" href="/static/instance_theme.css?v=5">
+    <meta name="theme-color" content="#0b0d14">
+</head>
+<body class="roll-doc-page">
+<div class="container roll-doc-container">
+    <div class="doc-nav roll-doc-nav">
+        <a href="/strategy">← 返回策略交易</a>
+        &nbsp;·&nbsp;
+        <a href="/strategy/roll">顺势加仓</a>
+    </div>
+    <article class="doc-body roll-doc-body">
+        {{ doc_html|safe }}
+    </article>
+</div>
+</body>
+</html>