grpctestify 1.5.2

// Document 1: authenticate on auth-server
--- ADDRESS ---
auth-server:50051

--- ENDPOINT ---
auth.AuthService/Login

--- REQUEST ---
{
  "user": "alice",
  "pass": "secret123"
}

--- RESPONSE ---
{
  "session_id": "sess-abc-123",
  "expires_at": 1700000000
}

--- EXTRACT ---
session = .session_id

// Document 2: query data-server with session
--- ADDRESS ---
data-server:60060

--- ENDPOINT ---
data.DataService/Fetch

--- REQUEST_HEADERS ---
X-Session: {{session}}

--- REQUEST ---
{
  "query": "users",
  "filter": {
    "active": true
  }
}

--- RESPONSE ---
{
  "users": [
    { "id": 1, "name": "Alice" },
    { "id": 2, "name": "Bob" }
  ]
}

--- EXTRACT ---
user_ids = [.users[].id]

// Document 3: fetch metrics from metrics-server (no ADDRESS, uses default)
--- ENDPOINT ---
metrics.MetricsService/GetCounters

--- REQUEST ---
{}

--- RESPONSE with_asserts ---
{
  "counters": {
    "requests": 1542,
    "errors": 3
  }
}

--- ASSERTS ---
.counters.requests > 0