feat: 实盘配置面板 (live_config)

DB:
- live_config表(key/value/label/updated_at)
- 默认7项: 1R金额/初始本金/风险比例/最大持仓/杠杆/策略/环境

API:
- GET /api/live/config — 读取全部配置
- PUT /api/live/config — 批量更新配置

前端:
- L1.5配置面板(L1止血和L2账户之间)
- 标题栏醒目显示 1R = $X.XX
- 7列网格: 图标+标签+值
- 编辑模式: 点编辑→改值→保存/取消
- 各项格式化: $前缀/%后缀/x后缀

backend/main.py

@@ -1887,3 +1887,29 @@ async def live_events(
         *params
     )
     return {"count": len(rows), "data": rows}
+
+
+# ============ Live Config (实盘配置) ============
+
+@app.get("/api/live/config")
+async def live_config_get(user: dict = Depends(get_current_user)):
+    """获取实盘配置"""
+    rows = await async_fetch("SELECT key, value, label, updated_at FROM live_config ORDER BY key")
+    config = {}
+    for r in rows:
+        config[r["key"]] = {"value": r["value"], "label": r["label"], "updated_at": str(r["updated_at"])}
+    return config
+
+
+@app.put("/api/live/config")
+async def live_config_update(request: Request, user: dict = Depends(get_current_user)):
+    """更新实盘配置"""
+    body = await request.json()
+    updated = []
+    for key, value in body.items():
+        await async_execute(
+            "UPDATE live_config SET value = $1, updated_at = NOW() WHERE key = $2",
+            str(value), key
+        )
+        updated.append(key)
+    return {"updated": updated}

frontend/app/live/page.tsx

@@ -110,6 +110,90 @@ function L1_EmergencyPanel() {
   );
 }
 
+// ═══════════════════════════════════════════════════════════════
+// L1.5: 实盘配置面板
+// ═══════════════════════════════════════════════════════════════
+function L15_LiveConfig() {
+  const [config, setConfig] = useState<Record<string, any>>({});
+  const [editing, setEditing] = useState(false);
+  const [draft, setDraft] = useState<Record<string, string>>({});
+  const [saving, setSaving] = useState(false);
+
+  useEffect(() => {
+    const f = async () => {
+      try {
+        const r = await authFetch("/api/live/config");
+        if (r.ok) { const d = await r.json(); setConfig(d); }
+      } catch {}
+    };
+    f();
+  }, []);
+
+  const configOrder = ["risk_per_trade_usd", "initial_capital", "risk_pct", "max_positions", "leverage", "enabled_strategies", "trade_env"];
+  const configIcons: Record<string, string> = {
+    risk_per_trade_usd: "🎯", initial_capital: "💰", risk_pct: "📊",
+    max_positions: "📦", leverage: "⚡", enabled_strategies: "🧠", trade_env: "🌐"
+  };
+
+  const startEdit = () => {
+    const d: Record<string, string> = {};
+    for (const k of configOrder) { d[k] = config[k]?.value || ""; }
+    setDraft(d); setEditing(true);
+  };
+
+  const saveConfig = async () => {
+    setSaving(true);
+    try {
+      const r = await authFetch("/api/live/config", { method: "PUT", headers: { "Content-Type": "application/json" }, body: JSON.stringify(draft) });
+      if (r.ok) {
+        const r2 = await authFetch("/api/live/config");
+        if (r2.ok) setConfig(await r2.json());
+        setEditing(false);
+      }
+    } catch {} finally { setSaving(false); }
+  };
+
+  const riskUsd = parseFloat(config.risk_per_trade_usd?.value || "2");
+
+  return (
+    <div className="rounded-xl border border-slate-200 bg-white overflow-hidden">
+      <div className="px-3 py-2 border-b border-slate-100 flex items-center justify-between">
+        <h3 className="font-semibold text-slate-800 text-xs flex items-center gap-2">
+          ⚙️ 实盘配置
+          <span className="text-blue-600 font-bold text-sm">1R = ${riskUsd.toFixed(2)}</span>
+        </h3>
+        {!editing ? (
+          <button onClick={startEdit} className="px-2 py-0.5 rounded text-[10px] bg-slate-100 text-slate-600 hover:bg-slate-200">编辑</button>
+        ) : (
+          <div className="flex gap-1">
+            <button onClick={() => setEditing(false)} className="px-2 py-0.5 rounded text-[10px] bg-slate-100 text-slate-500">取消</button>
+            <button onClick={saveConfig} disabled={saving} className="px-2 py-0.5 rounded text-[10px] bg-blue-600 text-white hover:bg-blue-700 disabled:opacity-50">{saving ? "保存中..." : "保存"}</button>
+          </div>
+        )}
+      </div>
+      <div className="p-3 grid grid-cols-2 sm:grid-cols-4 lg:grid-cols-7 gap-2">
+        {configOrder.map(k => {
+          const c = config[k];
+          if (!c) return null;
+          return (
+            <div key={k} className="text-center">
+              <div className="text-[10px] text-slate-400 mb-0.5">{configIcons[k]} {c.label}</div>
+              {editing ? (
+                <input value={draft[k] || ""} onChange={e => setDraft({...draft, [k]: e.target.value})}
+                  className="w-full text-center text-xs font-mono border border-slate-300 rounded px-1 py-0.5 focus:border-blue-500 focus:outline-none" />
+              ) : (
+                <div className="text-sm font-bold text-slate-800 font-mono">
+                  {k === "risk_per_trade_usd" ? `$${c.value}` : k === "risk_pct" ? `${c.value}%` : k === "leverage" ? `${c.value}x` : c.value}
+                </div>
+              )}
+            </div>
+          );
+        })}
+      </div>
+    </div>
+  );
+}
+
 // ═══════════════════════════════════════════════════════════════
 // L2: 账户概览（8卡片）
 // ═══════════════════════════════════════════════════════════════
@@ -655,6 +739,7 @@ export default function LiveTradingPage() {
         </div>
       </div>
       <L1_EmergencyPanel />
+      <L15_LiveConfig />
       <L2_AccountOverview />
       <L3_Positions />
       <L4_ExecutionQuality />