feat: 账户方向与币种白名单 env 开关（三所）

Per-instance TRADE_DIRECTION / TRADE_SYMBOL_WHITELIST restricts UI and API for manual orders, key monitors, and strategies; includes sync script for deployment profiles.

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

lib/strategy/templates/trade_policy_fields.html

@@ -0,0 +1,29 @@
+{# 方向 / 币种：env 账户级限制（三所共用宏） #}
+{% macro trade_policy_symbol(name, id, value='', required=true, placeholder='BTC 或 BTC/USDT') -%}
+{% if trade_policy.symbol_restrict_enabled and trade_policy.symbol_whitelist %}
+<select name="{{ name }}" id="{{ id }}" {% if required %}required{% endif %} class="trade-policy-symbol-select">
+    <option value="">选择币种</option>
+    {% for sym in trade_policy.symbol_whitelist %}
+    <option value="{{ sym }}" {% if value and (value|upper == sym or value|upper.startswith(sym ~ '/')) %}selected{% endif %}>{{ sym }}/USDT</option>
+    {% endfor %}
+</select>
+{% else %}
+<input id="{{ id }}" name="{{ name }}" placeholder="{{ placeholder }}" {% if required %}required{% endif %} value="{{ value }}">
+{% endif %}
+{%- endmacro %}
+
+{% macro trade_policy_direction(name, id, required=true, include_empty=true) -%}
+{% if trade_policy.direction_restrict_enabled and trade_policy.direction_mode == 'long_only' %}
+<span class="trade-policy-dir-lock" title="账户配置：仅做多">做多</span>
+<input type="hidden" name="{{ name }}" id="{{ id }}" value="long">
+{% elif trade_policy.direction_restrict_enabled and trade_policy.direction_mode == 'short_only' %}
+<span class="trade-policy-dir-lock" title="账户配置：仅做空">做空</span>
+<input type="hidden" name="{{ name }}" id="{{ id }}" value="short">
+{% else %}
+<select name="{{ name }}" id="{{ id }}" {% if required %}required{% endif %}>
+    {% if include_empty %}<option value="">方向</option>{% endif %}
+    {% if trade_policy.allows_long %}<option value="long">做多</option>{% endif %}
+    {% if trade_policy.allows_short %}<option value="short">做空</option>{% endif %}
+</select>
+{% endif %}
+{%- endmacro %}