feat(agent): expose compile-time version

agent/lib/proxmox_agent.ex

@@ -1,18 +1,8 @@
 defmodule ProxmoxAgent do
-  @moduledoc """
+  @moduledoc "Top-level namespace. Exposes the compiled version for reporting."
-  Documentation for `ProxmoxAgent`.
-  """
 
-  @doc """
+  @version Mix.Project.config()[:version]
-  Hello world.
 
-  ## Examples
+  @spec version() :: String.t()
-
+  def version, do: @version
-      iex> ProxmoxAgent.hello()
-      :world
-
-  """
-  def hello do
-    :world
-  end
 end

agent/test/proxmox_agent_test.exs

@@ -1,8 +1,8 @@
 defmodule ProxmoxAgentTest do
-  use ExUnit.Case
+  use ExUnit.Case, async: true
-  doctest ProxmoxAgent
 
-  test "greets the world" do
+  test "version/0 returns a non-empty string" do
-    assert ProxmoxAgent.hello() == :world
+    assert is_binary(ProxmoxAgent.version())
+    assert ProxmoxAgent.version() != ""
   end
 end