Add key-level auto trade, AI analysis, and trading UX improvements.

Key monitors use 5m close triggers with WeChat alerts and box/convergence auto orders; add pending-order worker, structured WeChat notify, AI settings/messages, session clock, CTP margin sizing, and dual-layer position limits.

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

templates/base.html

@@ -60,6 +60,7 @@
                 {% if nav_items.strategy %}<a href="{{ url_for('strategy_page') }}" class="{% if request.endpoint in ('strategy_page', 'strategy_records_page') %}active{% endif %}">策略交易</a>{% endif %}
                 {% if nav_items.plans %}<a href="{{ url_for('plans') }}" class="{% if request.endpoint == 'plans' %}active{% endif %}">开单计划</a>{% endif %}
                 <a href="{{ url_for('keys') }}" class="{% if request.endpoint == 'keys' %}active{% endif %}">关键位监控</a>
+                {% if nav_items.ai %}<a href="{{ url_for('ai_messages_page') }}" class="{% if request.endpoint == 'ai_messages_page' %}active{% endif %}">AI 分析</a>{% endif %}
                 {% if nav_items.market %}<a href="{{ url_for('market_page') }}" class="{% if request.endpoint == 'market_page' %}active{% endif %}">行情K线</a>{% endif %}
                 <a href="{{ url_for('records') }}" class="{% if request.endpoint in ('records', 'trades') %}active{% endif %}">交易记录与复盘</a>
                 <a href="{{ url_for('stats') }}" class="{% if request.endpoint == 'stats' %}active{% endif %}">统计分析</a>