fix: 添加init bind传递discountid，dspy添加early debug日志

wwwroot/discount_setting/get_products_with_discount.dspy

@@ -2,6 +2,7 @@
 # 参数: discountid (必需)
 
 discountid = params_kw.get('discountid')
+debug(f'get_products_with_discount called: params_kw keys={list(params_kw.keys())}, discountid={discountid}')
 if not discountid:
     return {"total": 0, "rows": []}
 

wwwroot/discount_setting/index.ui

@@ -67,5 +67,14 @@
                 }
             ]
         }
+    ],
+    "binds": [
+        {
+            "wid": "self",
+            "event": "init",
+            "actiontype": "script",
+            "target": "product_discount_tbl",
+            "script": "var discountid = new URLSearchParams(window.location.search).get('discountid') || ''; if (discountid) { await this.render({discountid: discountid}); }"
+        }
     ]
 }