Limit tradable products to four varieties for accounts at or below 100k.

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

templates/trade.html

@@ -133,7 +133,8 @@
             <div class="card-body">
                 <p class="hint">最大手数 = floor(权益 × 保证金上限 <strong>{{ max_margin_pct }}%</strong> ÷ 1手保证金)；当前权益 <strong class="text-accent" id="rec-capital">{{ '%.2f'|format(capital) }}</strong> 元。
                     {% if sizing_mode == 'fixed' %}仅显示最大手数 ≥ <strong>{{ fixed_lots }}</strong> 手的品种。{% endif %}
-                    {% if night_session %}<span class="text-muted">当前为夜盘时段，品种下拉与下表仅显示有夜盘品种；带「夜盘」标记。</span>{% else %}<span class="text-muted">有夜盘交易的品种带「夜盘」标记。</span>{% endif %}
+                    {% if small_account_scope %}<span class="text-muted">权益 10 万以下仅显示并可交易：{{ small_account_scope_label }}。</span>{% endif %}
+                    {% if night_session %}<span class="text-muted">当前为夜盘时段，品种下拉与下表仅显示有夜盘品种；带「夜盘」标记。</span>{% elif not small_account_scope %}<span class="text-muted">有夜盘交易的品种带「夜盘」标记。</span>{% endif %}
                     保证金优先读取 CTP 柜台合约信息。
                     {% if recommend_updated_at %}<span class="text-muted">每日后台更新 · 最近 {{ recommend_updated_at }}</span>{% else %}<span class="text-muted" id="rec-updated">等待今日后台刷新…</span>{% endif %}
                 </p>