Web 加上资金面/情绪叠图，并收紧默认图面。

默认主/次/次次改为 45m/15m/5m、开始时间一周；SD/CD 按 hist 摆位置和箭头；去掉笔线段背驰与第四类勾选。

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

web/api/provider.py

@@ -0,0 +1,73 @@
+"""把 data_provider 的资金面转给 Web，浏览器不直连交易所。"""
+from __future__ import annotations
+
+import logging
+
+import requests
+from flask import Blueprint, jsonify, request
+
+from services.runtime.market_data import (
+	fetch_derivatives,
+	fetch_sentiment_latest,
+	fetch_sentiment_metrics,
+)
+
+logger = logging.getLogger(__name__)
+
+bp = Blueprint("provider", __name__)
+
+
+def _http_error(exc: requests.HTTPError):
+	status = 502
+	detail = str(exc)
+	if exc.response is not None:
+		status = exc.response.status_code or 502
+		try:
+			body = exc.response.json()
+			detail = body.get("detail") or body.get("error") or detail
+		except Exception:
+			detail = exc.response.text or detail
+	return jsonify({"error": detail}), status
+
+
+@bp.route("/api/derivatives")
+def api_derivatives():
+	symbol = (request.args.get("symbol") or "BTC/USDT:USDT").strip()
+	exchange = (request.args.get("exchange") or "").strip() or None
+	try:
+		return jsonify(fetch_derivatives(symbol, exchange))
+	except requests.HTTPError as exc:
+		return _http_error(exc)
+	except Exception as exc:
+		logger.warning("derivatives 中转失败: %s", exc)
+		return jsonify({"error": str(exc)}), 503
+
+
+@bp.route("/api/sentiment/latest")
+def api_sentiment_latest():
+	symbol = (request.args.get("symbol") or "BTC/USDT:USDT").strip()
+	try:
+		return jsonify(fetch_sentiment_latest(symbol))
+	except requests.HTTPError as exc:
+		return _http_error(exc)
+	except Exception as exc:
+		logger.warning("sentiment latest 中转失败: %s", exc)
+		return jsonify({"error": str(exc)}), 503
+
+
+@bp.route("/api/sentiment/metrics")
+def api_sentiment_metrics():
+	metric = (request.args.get("metric") or "").strip()
+	if not metric:
+		return jsonify({"error": "metric required"}), 400
+	symbol = (request.args.get("symbol") or "BTC/USDT:USDT").strip()
+	start = request.args.get("start", type=int)
+	end = request.args.get("end", type=int)
+	limit = request.args.get("limit", type=int)
+	try:
+		return jsonify(fetch_sentiment_metrics(metric, symbol, start=start, end=end, limit=limit))
+	except requests.HTTPError as exc:
+		return _http_error(exc)
+	except Exception as exc:
+		logger.warning("sentiment 中转失败: %s", exc)
+		return jsonify({"error": str(exc)}), 503