恢复下单界面并排布局，品种推荐数据库缓存与 SSE 推送。

期货下单与持仓监控左右并排，推荐按资金过滤存库，后台刷新并通过 EventSource 推送。

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

install_trading.py

@@ -5,10 +5,11 @@ import json
 from datetime import datetime
 from typing import Any, Callable
 
-from flask import flash, jsonify, redirect, render_template, request, url_for
+from flask import flash, jsonify, redirect, render_template, request, url_for, Response, stream_with_context
 
 from contract_specs import calc_position_metrics, get_contract_spec
 from fee_specs import calc_fee_breakdown
+from kline_stream import sse_format
 from position_sizing import (
     MODE_FIXED,
     MODE_RISK,
@@ -16,7 +17,8 @@ from position_sizing import (
     calc_order_tick_metrics,
     normalize_sizing_mode,
 )
-from product_recommend import list_product_recommendations
+from recommend_store import load_recommend_cache, refresh_recommend_cache
+from recommend_stream import recommend_hub, start_recommend_worker
 from risk.account_risk_lib import (
     assert_can_open,
     get_risk_status,
@@ -300,6 +302,7 @@ def install_trading(app, *, login_required, get_db, get_setting, set_setting, fe
             ).fetchone()["n"]
             conn.commit()
             sizing = get_sizing_mode(get_setting)
+            rec_cache = load_recommend_cache(conn)
             return render_template(
                 "trade.html",
                 trading_mode=mode,
@@ -314,6 +317,8 @@ def install_trading(app, *, login_required, get_db, get_setting, set_setting, fe
                 sizing_mode=sizing,
                 sizing_mode_label="以损定仓" if sizing == MODE_RISK else "固定张数",
                 risk_percent=get_risk_percent(get_setting),
+                recommend_rows=rec_cache.get("rows") or [],
+                recommend_updated_at=rec_cache.get("updated_at"),
             )
         finally:
             conn.close()
@@ -626,10 +631,61 @@ def install_trading(app, *, login_required, get_db, get_setting, set_setting, fe
     @app.route("/api/recommend/list")
     @login_required
     def api_recommend_list():
+        """只读数据库缓存，不在请求时拉行情。"""
         conn = get_db()
-        capital = _capital(conn)
-        conn.close()
-        return jsonify({"ok": True, "capital": capital, "rows": list_product_recommendations(capital, _main_price)})
+        try:
+            payload = load_recommend_cache(conn)
+            return jsonify({"ok": True, **payload})
+        finally:
+            conn.close()
+
+    @app.route("/api/recommend/stream")
+    @login_required
+    def api_recommend_stream():
+        from queue import Empty
+
+        def generate():
+            q = recommend_hub.subscribe()
+            try:
+                conn = get_db()
+                try:
+                    payload = load_recommend_cache(conn)
+                finally:
+                    conn.close()
+                yield sse_format("recommend", {"ok": True, **payload})
+                while True:
+                    try:
+                        msg = q.get(timeout=25)
+                        yield sse_format(msg["event"], msg["data"])
+                    except Empty:
+                        yield ": heartbeat\n\n"
+            finally:
+                recommend_hub.unsubscribe(q)
+
+        return Response(
+            stream_with_context(generate()),
+            mimetype="text/event-stream",
+            headers={
+                "Cache-Control": "no-cache",
+                "Connection": "keep-alive",
+                "X-Accel-Buffering": "no",
+            },
+        )
+
+    @app.route("/api/recommend/refresh", methods=["POST"])
+    @login_required
+    def api_recommend_refresh():
+        """手动触发一次后台刷新（仍写入数据库）。"""
+        conn = get_db()
+        try:
+            init_strategy_tables(conn)
+            capital = _capital(conn)
+            rows = refresh_recommend_cache(conn, capital, _main_price)
+            payload = load_recommend_cache(conn)
+            recommend_hub.broadcast("recommend", {"ok": True, **payload})
+            return jsonify({"ok": True, "count": len(rows), **payload})
+        finally:
+            conn.close()
 
     @app.route("/api/strategy/trend/preview", methods=["POST"])
     @login_required
@@ -946,3 +1002,15 @@ def install_trading(app, *, login_required, get_db, get_setting, set_setting, fe
             reduce_cooloff_after_journal(conn, trading_day=trading_day_label())
 
     app._risk_review_hook = hook_review_mood
+
+    from db_conn import DB_PATH
+
+    def _init_tables(conn):
+        init_strategy_tables(conn)
+
+    start_recommend_worker(
+        db_path=DB_PATH,
+        get_capital_fn=_capital,
+        price_fn=_main_price,
+        init_tables_fn=_init_tables,
+    )