条件单列表改为中控后台并行缓存并以 SSE 推浏览器，下发仍走中控到实例。

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

static/cond_orders.js

@@ -117,7 +117,7 @@
         });
         const dd = await rr.json();
         alert(dd.msg || (dd.ok ? "已取消" : "失败"));
-        refresh();
+        requestCondRefresh();
       });
     });
     box.querySelectorAll("[data-exit]").forEach(function (btn) {
@@ -148,7 +148,7 @@
         });
         const dd = await rr.json();
         alert(dd.msg || (dd.ok ? "已更新" : "失败"));
-        refresh();
+        requestCondRefresh();
       });
     });
   }
@@ -414,13 +414,25 @@
     fillOrderBox(document.getElementById("cond-list-done"), lastDone, "暂无已结束的条件单", "done");
   }
 
-  async function loadOrders() {
+  let condVersion = 0;
+  let condLoading = false;
+  let condEventSource = null;
+  let condReconnectTimer = null;
+
+  function setCondStatus(msg) {
+    const el = document.getElementById("cond-status");
+    if (el) el.textContent = msg || "";
+  }
+
+  async function loadOrders(opts) {
+    opts = opts || {};
     const activeBox = document.getElementById("cond-list-active");
     const doneBox = document.getElementById("cond-list-done");
     if (!activeBox && !doneBox) return;
-    const r = await fetch("/api/cond_orders");
+    const r = await fetch("/api/cond_orders", { credentials: "same-origin" });
     const d = await r.json();
     const list = d.orders || [];
+    condVersion = Number(d.cond_version) || condVersion;
     lastActive = [];
     lastDone = [];
     list.forEach(function (o) {
@@ -428,6 +440,19 @@
       else lastDone.push(o);
     });
     paintCachedOrders();
+    if (!opts.silent) {
+      const live = condEventSource && condEventSource.readyState === 1;
+      const sec = Number(d.poll_interval_sec) || 10;
+      setCondStatus(
+        (live ? "SSE 已连接 · " : "") +
+          "进行中 " +
+          lastActive.length +
+          " · 已结束 " +
+          lastDone.length +
+          (d.updated_at ? " · " + d.updated_at : "") +
+          (d.refreshing ? " · 后台拉取中" : " · 后台每 " + sec + "s 并行拉")
+      );
+    }
   }
 
   async function createOrder() {
@@ -467,16 +492,72 @@
       const tog = document.getElementById("cond-add-toggle");
       if (tog) tog.checked = false;
     }
-    refresh();
+    requestCondRefresh();
   }
 
-  async function refresh() {
-    await Promise.all([loadCandidates(), loadOrders()]);
+  async function refresh(opts) {
+    opts = opts || {};
+    if (condLoading) return;
+    condLoading = true;
+    if (!opts.silent) setCondStatus("读取缓存…");
+    try {
+      await Promise.all([loadCandidates(), loadOrders({ silent: !!opts.silent })]);
+    } finally {
+      condLoading = false;
+    }
+  }
+
+  async function requestCondRefresh() {
+    try {
+      await fetch("/api/cond_orders/refresh", {
+        method: "POST",
+        credentials: "same-origin",
+      });
+    } catch (_) {}
+    refresh({ silent: true });
+  }
+
+  function closeCondStream() {
+    if (condEventSource) {
+      condEventSource.close();
+      condEventSource = null;
+    }
+    if (condReconnectTimer) {
+      clearTimeout(condReconnectTimer);
+      condReconnectTimer = null;
+    }
+  }
+
+  function connectCondStream() {
+    if (typeof EventSource === "undefined") return;
+    closeCondStream();
+    condEventSource = new EventSource("/api/cond_orders/stream");
+    condEventSource.addEventListener("cond", function (ev) {
+      try {
+        const st = JSON.parse(ev.data || "{}");
+        const ver = Number(st.cond_version) || 0;
+        if (ver && ver !== condVersion) {
+          refresh({ silent: true });
+        } else if (st.refreshing) {
+          setCondStatus("后台并行拉取条件单…");
+        }
+      } catch (_) {}
+    });
+    condEventSource.onerror = function () {
+      closeCondStream();
+      setCondStatus("SSE 断开,8s 后重连…");
+      condReconnectTimer = setTimeout(function () {
+        connectCondStream();
+        refresh({ silent: true });
+      }, 8000);
+    };
   }
 
   function boot() {
     const btn = document.getElementById("btn-cond-refresh");
-    if (btn) btn.addEventListener("click", refresh);
+    if (btn) btn.addEventListener("click", function () {
+      requestCondRefresh();
+    });
     const create = document.getElementById("btn-cond-create");
     if (create) create.addEventListener("click", createOrder);
     const typeEl = document.getElementById("cf-opt-type");
@@ -484,9 +565,14 @@
     if (typeEl) typeEl.addEventListener("change", syncTriggerHint);
     if (pxEl) pxEl.addEventListener("input", syncTriggerHint);
     syncTriggerHint();
+    // 读缓存秒开 + SSE;不再前端定时现场拉实例
     refresh();
-    setInterval(refresh, 10000);
+    connectCondStream();
   }
 
-  global.HubCondOrders = { boot: boot, refresh: refresh };
+  global.HubCondOrders = {
+    boot: boot,
+    refresh: refresh,
+    requestRefresh: requestCondRefresh,
+  };
 })(window);