Dashboard: show online machines and live trade feed with polling.

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

app/routes.py

@@ -179,28 +179,84 @@ def register_routes(app: Flask) -> None:
             flash(str(exc), "error")
         return redirect(url_for("users_page"))
 
-    @app.get("/")
-    @login_required
-    def dashboard():
-        u = current_user()
+    def _fmt_ts(value) -> str:
+        if value is None or value == "":
+            return "—"
+        try:
+            return datetime.fromtimestamp(float(value)).strftime("%Y-%m-%d %H:%M:%S")
+        except (TypeError, ValueError, OSError):
+            return str(value)
+
+    def _dashboard_payload(u: dict) -> dict:
         with database.get_db() as conn:
             if u["role"] == "admin":
                 accounts = database.list_accounts(conn)
-                machines = database.list_machines(conn)
-                trades = database.list_trades(conn, 20)
+                trades = database.list_trades(conn, 40)
             else:
                 accounts = [
                     a
                     for a in database.list_accounts(conn)
                     if a["id"] == u.get("account_id")
                 ]
-                machines = database.list_machines(conn)
-                trades = database.list_trades(conn, 20, account_id=u.get("account_id"))
-        return render_template(
-            "dashboard.html",
-            accounts=accounts,
-            machines=machines,
-            trades=trades,
+                trades = database.list_trades(conn, 40, account_id=u.get("account_id"))
+            machines = database.list_machines_for_user(conn, u)
+        online_machines = [m for m in machines if m.get("online")]
+        for m in machines:
+            m["last_seen_fmt"] = _fmt_ts(m.get("last_seen_at"))
+        for t in trades:
+            t["time_fmt"] = _fmt_ts(
+                t.get("close_time") or t.get("open_time") or t.get("created_at")
+            )
+        return {
+            "accounts": accounts,
+            "machines": machines,
+            "online_machines": online_machines,
+            "online_count": len(online_machines),
+            "machine_count": len(machines),
+            "trades": trades,
+        }
+
+    @app.get("/")
+    @login_required
+    def dashboard():
+        data = _dashboard_payload(current_user())
+        return render_template("dashboard.html", **data)
+
+    @app.get("/api/dashboard/live")
+    @login_required
+    def dashboard_live():
+        """总览轮询：在线机器 + 实时成交。"""
+        data = _dashboard_payload(current_user())
+        return jsonify(
+            {
+                "ok": True,
+                "online_count": data["online_count"],
+                "machine_count": data["machine_count"],
+                "online_machines": [
+                    {
+                        "id": m["id"],
+                        "name": m.get("name") or f"#{m['id']}",
+                        "last_seen_at": m.get("last_seen_at"),
+                        "last_seen_fmt": _fmt_ts(m.get("last_seen_at")),
+                        "online": True,
+                    }
+                    for m in data["online_machines"]
+                ],
+                "trades": [
+                    {
+                        "id": t["id"],
+                        "time_fmt": t.get("time_fmt"),
+                        "symbol": t.get("symbol"),
+                        "side": t.get("side"),
+                        "volume": t.get("volume"),
+                        "profit": t.get("profit"),
+                        "account_name": t.get("account_name"),
+                        "machine_name": t.get("machine_name"),
+                        "ticket": t.get("ticket"),
+                    }
+                    for t in data["trades"]
+                ],
+            }
         )
 
     # ---------- 账户（仅管理员创建）----------