feat(ai): 新增 AI 流式回答功能 V3 版本

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2025-09-02 b278f87c6e9bbd0fadfc3f7097e54cc72a162480

 src/main/java/cc/mrbird/febs/mall/entity/MallGoodsCoupon.java

@@ -26,5 +26,4 @@
    //减免金额
    private BigDecimal realAmount;


}