grpctestify 1.5.1

// Document 1: fetch first page and extract cursor
--- ADDRESS ---
localhost:50051

--- ENDPOINT ---
api.ItemService/ListItems

--- REQUEST ---
{
  "category": "electronics",
  "limit": 10
}

--- RESPONSE with_asserts ---
{
  "items": [
    { "id": "item-1", "name": "Laptop" },
    { "id": "item-2", "name": "Phone" }
  ],
  "cursor": "eyJvZmZzZXQiOjEwfQ==",
  "has_more": true,
  "total": 42
}

--- EXTRACT ---
next_cursor = .cursor
item_count = .items | length
has_more = .has_more

--- ASSERTS ---
$item_count == 2
$has_more == true

// Document 2: fetch second page using cursor
--- ENDPOINT ---
api.ItemService/ListItems

--- REQUEST ---
{
  "category": "electronics",
  "limit": 10,
  "cursor": "{{next_cursor}}"
}

--- RESPONSE with_asserts ---
{
  "items": [
    { "id": "item-3", "name": "Tablet" },
    { "id": "item-4", "name": "Monitor" }
  ],
  "cursor": "eyJvZmZzZXQiOjIwfQ==",
  "has_more": true,
  "total": 42
}

--- EXTRACT ---
next_cursor = .cursor
page2_count = .items | length

--- ASSERTS ---
$page2_count == 2
$next_cursor != "{{next_cursor}}"

// Document 3: fetch remaining items (last page)
--- ENDPOINT ---
api.ItemService/ListItems

--- REQUEST ---
{
  "category": "electronics",
  "limit": 10,
  "cursor": "{{next_cursor}}"
}

--- RESPONSE with_asserts ---
{
  "items": [],
  "cursor": "",
  "has_more": false,
  "total": 42
}

--- ASSERTS ---
@len(.items) == 0
.has_more == false