feat: 研究Tab支持10年回测区间(v_mr 10y成绩可见)

- server.py: /api/research/backtest days映射补 5y(1825)/10y(3650)，修复5y静默回退185天bug
- static/index.html: 时间区间下拉加近10年选项 + ptMap加10y
- 附带: mr_scanner v_mr实盘扫描器 + market_watch接入(2af2e934已含)

server.py

@@ -556,7 +556,7 @@ def api_research_backtest():
     market = request.args.get('market', 'all')  # all | a | hk
     capital = float(request.args.get('capital', 1000000))
     end_date = '2026-07-24'  # 数据完整截止日
-    days = {'1m': 30, '6m': 185, '1y': 365, '2y': 730}.get(period, 185)
+    days = {'1m': 30, '6m': 185, '1y': 365, '2y': 730, '5y': 1825, '10y': 3650}.get(period, 185)
     start_date = (datetime.strptime(end_date, '%Y-%m-%d') - timedelta(days=days)).strftime('%Y-%m-%d')
     try:
         from strategy_lab import run_backtest, analyze_trade_list, save_analysis