feat: 增加订单过滤功能，支持按内容ID、支付时间范围和支付金额范围筛选

backend/docs/swagger.yaml

@@ -1386,6 +1386,19 @@ paths:
         name: tenantCode
         required: true
         type: string
+      - description: AmountPaidMax filters orders by amount_paid <= this amount (cents).
+        in: query
+        name: amount_paid_max
+        type: integer
+      - description: AmountPaidMin filters orders by amount_paid >= this amount (cents).
+        in: query
+        name: amount_paid_min
+        type: integer
+      - description: ContentID filters orders by purchased content id (via order_items
+          join).
+        in: query
+        name: content_id
+        type: integer
       - description: Limit is page size; only values in {10,20,50,100} are accepted
           (otherwise defaults to 10).
         in: query
@@ -1395,6 +1408,14 @@ paths:
         in: query
         name: page
         type: integer
+      - description: PaidAtFrom filters orders by paid_at >= this time.
+        in: query
+        name: paid_at_from
+        type: string
+      - description: PaidAtTo filters orders by paid_at <= this time.
+        in: query
+        name: paid_at_to
+        type: string
       - description: Status filters orders by order status.
         enum:
         - created
@@ -1745,6 +1766,11 @@ paths:
         name: tenantCode
         required: true
         type: string
+      - description: ContentID filters orders by purchased content id (via order_items
+          join).
+        in: query
+        name: content_id
+        type: integer
       - description: Limit is page size; only values in {10,20,50,100} are accepted
           (otherwise defaults to 10).
         in: query
@@ -1754,6 +1780,14 @@ paths:
         in: query
         name: page
         type: integer
+      - description: PaidAtFrom filters orders by paid_at >= this time.
+        in: query
+        name: paid_at_from
+        type: string
+      - description: PaidAtTo filters orders by paid_at <= this time.
+        in: query
+        name: paid_at_to
+        type: string
       - description: Status filters orders by order status.
         enum:
         - created