中控行情区与 K 线本地库（15 天滚动、按需拉取）

新增行情区单图与周期切换，K 线优先读 hub_kline.db，不足时经各实例 /api/hub/ohlcv 补齐；无后台定时更新。含回滚标签说明与单元测试。

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

manual_trading_hub/static/app.js

@@ -245,6 +245,7 @@
   function currentPage() {
     const p = window.location.pathname.replace(/\/$/, "") || "/monitor";
     if (p.includes("settings")) return "settings";
+    if (p.includes("market")) return "market";
     return "monitor";
   }
 
@@ -259,6 +260,9 @@
     if (page === "monitor") startMonitorPoll();
     else stopMonitorPoll();
     if (page === "settings") loadSettingsUI();
+    if (page === "market" && window.hubMarketChart) {
+      window.hubMarketChart.init();
+    }
   }
 
   function stopMonitorPoll() {