fix: add getList with records wrapper + correct options format from browser capture

internal/provider/rainyun/billing.go

@@ -21,7 +21,7 @@ func (b *BillingService) Orders(ctx context.Context) ([]provider.Order, error) {
 		CreateDate  string  `json:"create_date"`
 	}
 	var raw []rainyunOrder
-	if err := b.client.getWithQuery(ctx, "/expense/orders/list", map[string]string{"options": "1"}, &raw); err != nil {
+	if err := b.client.getList(ctx, "/expense/orders/list", &raw); err != nil {
 		return nil, err
 	}
 	orders := make([]provider.Order, len(raw))

internal/provider/rainyun/client.go

@@ -44,6 +44,23 @@ func (c *client) getWithQuery(ctx context.Context, path string, query map[string
 	return c.do(ctx, "GET", path, nil, result, query)
 }
 
+// getList sends a GET request to a Rainyun list endpoint and extracts the "records" field.
+func (c *client) getList(ctx context.Context, path string, result any) error {
+	var wrapper listResponse
+	if err := c.do(ctx, "GET", path, nil, &wrapper, listOptions()); err != nil {
+		return err
+	}
+	// Unmarshal the records array into the result
+	recordsJSON, err := json.Marshal(wrapper.Records)
+	if err != nil {
+		return fmt.Errorf("marshal records: %w", err)
+	}
+	if err := json.Unmarshal(recordsJSON, result); err != nil {
+		return fmt.Errorf("unmarshal records: %w", err)
+	}
+	return nil
+}
+
 func (c *client) post(ctx context.Context, path string, body, result any) error {
 	return c.do(ctx, "POST", path, body, result, nil)
 }

internal/provider/rainyun/domain.go

@@ -20,7 +20,7 @@ type rainyunDomain struct {
 
 func (d *DomainService) List(ctx context.Context) ([]provider.Domain, error) {
 	var raw []rainyunDomain
-	if err := d.client.getWithQuery(ctx, "/product/domain/", map[string]string{"options": "1"}, &raw); err != nil {
+	if err := d.client.getList(ctx, "/product/domain/", &raw); err != nil {
 		return nil, err
 	}
 	domains := make([]provider.Domain, len(raw))

internal/provider/rainyun/listdata.go

@@ -0,0 +1,21 @@
+package rainyun
+
+// listOptions returns the standard pagination query for Rainyun list endpoints.
+// Format verified via browser DevTools capture of the Rainyun web console:
+//
+//	https://api.v2.rainyun.com/product/rcs/?options={url-encoded JSON}
+//
+// The decoded JSON is: {"columnFilters":{},"sort":[],"page":1,"perPage":20}
+func listOptions() map[string]string {
+	return map[string]string{
+		"options": `{"columnFilters":{},"sort":[],"page":1,"perPage":50}`,
+	}
+}
+
+// listResponse is the JSON envelope returned by Rainyun list endpoints.
+// The API wraps data in {"code":0,"data":{"records":[...],"totalRecords":N}}.
+// Our client extracts apiResp.Data ({"records":[...]}), then we unmarshal into this.
+type listResponse struct {
+	Records      []any `json:"records"`
+	TotalRecords int   `json:"totalRecords"`
+}

internal/provider/rainyun/server.go

@@ -29,7 +29,7 @@ type rainyunServer struct {
 
 func (s *ServerService) List(ctx context.Context) ([]provider.Server, error) {
 	var raw []rainyunServer
-	if err := s.client.getWithQuery(ctx, "/product/rcs/", map[string]string{"options": "1"}, &raw); err != nil {
+	if err := s.client.getList(ctx, "/product/rcs/", &raw); err != nil {
 		return nil, err
 	}
 	servers := make([]provider.Server, len(raw))

internal/provider/rainyun/server_test.go

@@ -15,18 +15,21 @@ func TestServerList(t *testing.T) {
 		}
 		resp := map[string]any{
 			"code": 0,
-			"data": []map[string]any{
-				{
-					"id":          12001,
-					"name":        "web-server",
-					"status":      "running",
-					"ip":          "1.2.3.4",
-					"vcpu":        2,
-					"memory":      4096,
-					"disk":        50,
-					"os":          "Ubuntu 22.04",
-					"expire_date": "2026-08-15",
+			"data": map[string]any{
+				"records": []map[string]any{
+					{
+						"id":          12001,
+						"name":        "web-server",
+						"status":      "running",
+						"ip":          "1.2.3.4",
+						"vcpu":        2,
+						"memory":      4096,
+						"disk":        50,
+						"os":          "Ubuntu 22.04",
+						"expire_date": "2026-08-15",
+					},
 				},
+				"totalRecords": 1,
 			},
 		}
 		json.NewEncoder(w).Encode(resp)

internal/provider/rainyun/storage.go

@@ -17,7 +17,7 @@ func (s *StorageService) List(ctx context.Context) ([]provider.StorageInstance,
 		Name   string `json:"name"`
 		Status string `json:"status"`
 	}
-	if err := s.client.getWithQuery(ctx, "/product/ros/instance", map[string]string{"options": "1"}, &raw); err != nil {
+	if err := s.client.getList(ctx, "/product/ros/instance", &raw); err != nil {
 		return nil, err
 	}
 	instances := make([]provider.StorageInstance, len(raw))