重构统计分析页：汇总指标、分项下拉与后台缓存

新增 stats_engine 与 stats_cache，提供 API 自动加载 8 种统计维度；交易与复盘变更时自动刷新缓存。

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

app.py

@@ -29,6 +29,7 @@ from fee_specs import (
 )
 from fee_sync import sync_fees_from_akshare
 from contract_profile import get_contract_profile
+from stats_engine import STATS_VIEWS, load_stats_cache, refresh_stats_cache
 from kline_chart import generate_review_kline_chart
 from market import get_price as market_get_price, set_ths_refresh_token, get_quote_source_label
 
@@ -174,6 +175,26 @@ def set_setting(key: str, value: str):
     conn.close()
 
 
+def touch_stats_cache():
+    try:
+        conn = get_db()
+        capital = float(get_setting("live_capital", "0") or 0)
+        refresh_stats_cache(conn, capital)
+        conn.close()
+    except Exception as exc:
+        app.logger.warning("stats cache refresh failed: %s", exc)
+
+
+def get_stats_data() -> dict:
+    conn = get_db()
+    capital = float(get_setting("live_capital", "0") or 0)
+    data = load_stats_cache(conn)
+    if not data:
+        data = refresh_stats_cache(conn, capital)
+    conn.close()
+    return data
+
+
 def init_db():
     conn = get_db()
     c = conn.cursor()
@@ -278,6 +299,10 @@ def init_db():
                   close_today_fixed REAL DEFAULT 0,
                   close_today_ratio REAL DEFAULT 0,
                   updated_at TEXT)''')
+    c.execute('''CREATE TABLE IF NOT EXISTS stats_cache
+                 (key TEXT PRIMARY KEY,
+                  data_json TEXT NOT NULL,
+                  updated_at TEXT NOT NULL)''')
     conn.commit()
     conn.close()
 
@@ -904,6 +929,7 @@ def close_position(pid):
     conn.execute("DELETE FROM position_monitors WHERE id=?", (pid,))
     conn.commit()
     conn.close()
+    touch_stats_cache()
     flash(f"已平仓，盈亏 {pnl:.2f} 元（扣费后 {pnl_net:.2f} 元），已记入交易记录")
     return redirect(url_for("positions"))
 
@@ -946,6 +972,7 @@ def update_trade(tid):
     )
     conn.commit()
     conn.close()
+    touch_stats_cache()
     flash("交易记录已核对保存")
     return redirect(url_for("records"))
 
@@ -957,6 +984,7 @@ def del_trade(tid):
     conn.execute("DELETE FROM trade_logs WHERE id=?", (tid,))
     conn.commit()
     conn.close()
+    touch_stats_cache()
     flash("已删除")
     return redirect(url_for("records"))
 
@@ -1179,6 +1207,7 @@ def add_review():
     )
     conn.commit()
     conn.close()
+    touch_stats_cache()
     flash("复盘记录已保存")
     return redirect(url_for("records"))
 
@@ -1195,6 +1224,7 @@ def del_review(rid):
     conn.execute("DELETE FROM review_records WHERE id=?", (rid,))
     conn.commit()
     conn.close()
+    touch_stats_cache()
     flash("已删除")
     return redirect(url_for("records"))
 
@@ -1220,76 +1250,29 @@ def del_record(rid):
 @app.route("/stats")
 @login_required
 def stats():
+    return render_template("stats.html")
+
+
+@app.route("/api/stats")
+@login_required
+def api_stats():
+    return jsonify(get_stats_data())
+
+
+@app.route("/api/stats/views")
+@login_required
+def api_stats_views():
+    return jsonify({"views": STATS_VIEWS})
+
+
+@app.route("/api/stats/refresh", methods=["POST"])
+@login_required
+def api_stats_refresh():
     conn = get_db()
-    total = conn.execute(
-        "SELECT COUNT(*) FROM trade_records WHERE result IN ('止盈','止损')"
-    ).fetchone()[0]
-    win = conn.execute(
-        "SELECT COUNT(*) FROM trade_records WHERE result='止盈'"
-    ).fetchone()[0]
-    loss = conn.execute(
-        "SELECT COUNT(*) FROM trade_records WHERE result='止损'"
-    ).fetchone()[0]
-    rate = round(win / total * 100, 2) if total else 0
-
-    by_symbol = conn.execute(
-        """SELECT symbol_name, symbol, COUNT(*) as cnt,
-                  SUM(CASE WHEN result='止盈' THEN 1 ELSE 0 END) as wins
-           FROM trade_records WHERE result IN ('止盈','止损')
-           GROUP BY symbol ORDER BY cnt DESC"""
-    ).fetchall()
-
-    by_type = conn.execute(
-        """SELECT monitor_type, COUNT(*) as cnt,
-                  SUM(CASE WHEN result='止盈' THEN 1 ELSE 0 END) as wins
-           FROM trade_records WHERE result IN ('止盈','止损')
-           GROUP BY monitor_type ORDER BY cnt DESC"""
-    ).fetchall()
-
-    by_direction = conn.execute(
-        """SELECT direction, COUNT(*) as cnt,
-                  SUM(CASE WHEN result='止盈' THEN 1 ELSE 0 END) as wins
-           FROM trade_records WHERE result IN ('止盈','止损')
-           GROUP BY direction"""
-    ).fetchall()
-
-    recent = conn.execute(
-        "SELECT * FROM trade_logs ORDER BY id DESC LIMIT 10"
-    ).fetchall()
-
-    fee_trade = conn.execute(
-        "SELECT COALESCE(SUM(fee),0), COALESCE(SUM(pnl),0), COALESCE(SUM(pnl_net),0), COUNT(*) "
-        "FROM trade_logs WHERE fee IS NOT NULL"
-    ).fetchone()
-    fee_review = conn.execute(
-        "SELECT COALESCE(SUM(fee),0), COALESCE(SUM(pnl),0), COALESCE(SUM(pnl_net),0), COUNT(*) "
-        "FROM review_records WHERE fee IS NOT NULL"
-    ).fetchone()
-    total_fee = round((fee_trade[0] or 0) + (fee_review[0] or 0), 2)
-    total_gross = round((fee_trade[1] or 0) + (fee_review[1] or 0), 2)
-    total_net = round((fee_trade[2] or 0) + (fee_review[2] or 0), 2)
-    fee_count = (fee_trade[3] or 0) + (fee_review[3] or 0)
-
-    fee_by_symbol = conn.execute(
-        """SELECT symbol_name, symbol,
-                  COALESCE(SUM(fee),0) as total_fee,
-                  COUNT(*) as cnt
-           FROM trade_logs WHERE fee IS NOT NULL
-           GROUP BY symbol ORDER BY total_fee DESC LIMIT 20"""
-    ).fetchall()
+    capital = float(get_setting("live_capital", "0") or 0)
+    data = refresh_stats_cache(conn, capital)
     conn.close()
-
-    return render_template(
-        "stats.html",
-        total=total, win=win, loss=loss, rate=rate,
-        by_symbol=by_symbol, by_type=by_type, by_direction=by_direction,
-        recent=recent,
-        total_fee=total_fee,
-        total_gross=total_gross,
-        total_net=total_net,
-        fee_count=fee_count,
-        fee_by_symbol=fee_by_symbol,
-    )
+    return jsonify(data)
 
 
 @app.route("/contract")