feat(coupon-data): 领券数据看板加领券状态多选过滤

- coupon_data_report 加 statuses 参(status.in_ 过滤,与 app_env 同级),整视图联动
- 路由 /coupon-data 加多值 status 参(不传=全部);不影响 /coupons 按券表
- 新增 test_coupon_data_status_filter

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/test_coupon_platform_success.py

@@ -270,3 +270,30 @@ def test_step_writes_platform_success_to_session(client) -> None:
             db.commit()
         finally:
             db.close()
+
+
+def test_coupon_data_status_filter() -> None:
+    """状态多选过滤(方案 A):整个视图按选中状态算;None/空=全部。"""
+    db = SessionLocal()
+    try:
+        db.add_all([
+            _agg_session("st-A", ["meituan-waimai"], ["meituan-waimai"], status="completed"),
+            _agg_session("st-B", ["meituan-waimai"], ["meituan-waimai"], status="started"),
+            _agg_session("st-C", ["meituan-waimai"], None, status="failed"),
+            _agg_session("st-D", ["meituan-waimai"], ["meituan-waimai"], status="abandoned"),
+        ])
+        db.flush()
+        base = dict(date_from="2020-01-02", date_to="2020-01-02", app_env="prod")
+        # None = 全部 4 发起
+        assert coupon_data_report(db, **base)["summary"]["started_count"] == 4
+        # 排除 started → 3 发起(整个视图,发起数也随之变)
+        sub = coupon_data_report(db, **base, statuses=["completed", "failed", "abandoned"])["summary"]
+        assert sub["started_count"] == 3
+        assert sub["completed_count"] == 1
+        # 只 completed → 发起数=1、整单成功率基数=1(该 completed 是整单成功)
+        comp = coupon_data_report(db, **base, statuses=["completed"])["summary"]
+        assert comp["started_count"] == 1
+        assert comp["full_success_rate"] == 1.0
+    finally:
+        db.rollback()
+        db.close()