feat: 手续费改为逐笔USD累算 + Vite React前端 + system_orders表 + README

db/db.go

@@ -94,6 +94,20 @@ func (d *DB) migrate() error {
 	CREATE INDEX IF NOT EXISTS idx_trades_status   ON trades(status);
 	CREATE INDEX IF NOT EXISTS idx_trades_opened   ON trades(opened_at);
 	CREATE INDEX IF NOT EXISTS idx_orders_trade_id ON orders(trade_id);
+
+	CREATE TABLE IF NOT EXISTS system_orders (
+		id             INTEGER PRIMARY KEY AUTOINCREMENT,
+		trade_id       INTEGER NOT NULL REFERENCES trades(id),
+		type           TEXT NOT NULL,
+		status         TEXT NOT NULL DEFAULT 'filled',
+		spread         REAL,
+		long_price     REAL,
+		short_price    REAL,
+		long_order_id  INTEGER REFERENCES orders(id),
+		short_order_id INTEGER REFERENCES orders(id),
+		created_at     DATETIME NOT NULL
+	);
+	CREATE INDEX IF NOT EXISTS idx_system_orders_trade ON system_orders(trade_id);
 	`
 	_, err := d.Exec(schema)
 	if err != nil {