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/static/js/app/api_client.js

@@ -10,6 +10,33 @@ window.ChanApi = {
   symbols: function() {
     return fetch('/api/symbols').then(r => r.json());
   },
+  derivatives: function(params) {
+    const q = new URLSearchParams(params || {});
+    return fetch('/api/derivatives?' + q.toString()).then(function(r) {
+      return r.json().then(function(body) {
+        if (!r.ok) throw new Error((body && body.error) || r.statusText);
+        return body;
+      });
+    });
+  },
+  sentimentLatest: function(params) {
+    const q = new URLSearchParams(params || {});
+    return fetch('/api/sentiment/latest?' + q.toString()).then(function(r) {
+      return r.json().then(function(body) {
+        if (!r.ok) throw new Error((body && body.error) || r.statusText);
+        return body;
+      });
+    });
+  },
+  sentimentMetrics: function(params) {
+    const q = new URLSearchParams(params || {});
+    return fetch('/api/sentiment/metrics?' + q.toString()).then(function(r) {
+      return r.json().then(function(body) {
+        if (!r.ok) throw new Error((body && body.error) || r.statusText);
+        return body;
+      });
+    });
+  },
   macdConfig: function(body) {
     if (body === undefined) return fetch('/api/macd_config').then(r => r.json());
     return fetch('/api/macd_config', {