refactor: 缠论引擎包化与 Web 分层（ECR-001）

将根目录引擎迁入 chanlun/ 并保留兼容 shim；拆分 TF_DF 与 web 服务；
前端模块化；strategies 改用 chanlun 导入；补充 ESS 文档与 golden 回归。

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

web/api/symbols.py

@@ -0,0 +1,101 @@
+"""交易对 / A股 / MACD 配置 API。"""
+from flask import Blueprint, jsonify, request
+from services.runtime import *  # noqa: F403
+
+bp = Blueprint("symbols", __name__)
+
+@bp.route('/api/symbols')
+def get_symbols():
+	"""获取可用交易对"""
+	refresh_data_service_metadata()
+	if SYMBOLS:
+		return jsonify(SYMBOLS)
+	try:
+		markets = exchange.load_markets()
+		# 合约交易对通常是以USDT结尾的永续合约
+		symbols = [symbol for symbol in markets.keys() if '/USDT' in symbol and ':USDT' in symbol]
+		return jsonify(symbols)
+	except Exception as e:
+		return jsonify(DEFAULT_SYMBOLS)
+
+@bp.route('/api/a_stocks')
+def get_a_stocks():
+	"""获取A股股票列表"""
+	try:
+		stock_list = china_stock.get_stock_list()
+		return jsonify(stock_list)
+	except Exception as e:
+		return jsonify({'error': str(e)})
+
+@bp.route('/api/popular_a_stocks')  
+def get_popular_a_stocks():
+	"""获取热门A股股票"""
+	try:
+		return jsonify(china_stock.get_popular_stocks())
+	except Exception as e:
+		return jsonify({'error': str(e)})
+
+@bp.route('/api/sectors')
+def get_sectors():
+	"""获取所有行业分类"""
+	try:
+		sectors = china_stock.get_all_sectors()
+		return jsonify(sectors)
+	except Exception as e:
+		return jsonify({'error': str(e)})
+
+@bp.route('/api/stocks_by_sector')
+def get_stocks_by_sector():
+	"""根据行业获取股票"""
+	try:
+		sector = request.args.get('sector')
+		if sector:
+			stocks = china_stock.get_stock_by_sector(sector)
+			return jsonify(stocks)
+		else:
+			# 返回所有行业的股票分组
+			all_sectors = china_stock.get_stock_by_sector()
+			return jsonify(all_sectors)
+	except Exception as e:
+		return jsonify({'error': str(e)})
+
+@bp.route('/api/search_stock')
+def search_stock():
+	"""搜索股票 - 增强版"""
+	try:
+		keyword = request.args.get('keyword', '')
+		if not keyword:
+			return jsonify({'error': '搜索关键词不能为空'})
+		
+		results = china_stock.search_stock(keyword)
+		return jsonify(results)
+	except Exception as e:
+		return jsonify({'error': str(e)})
+
+
+@bp.route('/api/macd_config', methods=['GET', 'POST'])
+def macd_config():
+	"""获取或设置MACD参数"""
+	global macd_fast_period, macd_slow_period, macd_signal_period
+	if request.method == 'GET':
+		return jsonify({
+			'fast': macd_fast_period,
+			'slow': macd_slow_period,
+			'signal': macd_signal_period
+		})
+	else:
+		data = request.get_json(silent=True) or {}
+		fast = data.get('fast')
+		slow = data.get('slow')
+		signal = data.get('signal')
+		if fast is not None:
+			macd_fast_period = int(fast)
+		if slow is not None:
+			macd_slow_period = int(slow)
+		if signal is not None:
+			macd_signal_period = int(signal)
+		return jsonify({
+			'fast': macd_fast_period,
+			'slow': macd_slow_period,
+			'signal': macd_signal_period
+		})