blogex: add precommit alias (compile --warning-as-errors, format, test)

blogex/mix.exs

@@ -11,6 +11,7 @@ defmodule Blogex.MixProject do
       elixir: "~> 1.15",
       elixirc_paths: elixirc_paths(Mix.env()),
       start_permanent: Mix.env() == :prod,
+      aliases: aliases(),
       deps: deps(),
       docs: docs(),
       package: package(),
@@ -27,6 +28,12 @@ defmodule Blogex.MixProject do
     ]
   end
 
+  def cli do
+    [
+      preferred_envs: [precommit: :test]
+    ]
+  end
+
   defp deps do
     [
       {:nimble_publisher, "~> 2.0"},
@@ -50,6 +57,15 @@ defmodule Blogex.MixProject do
     ]
   end
 
+  # Same `precommit` alias name and shape as app/mix.exs, so both apps share
+  # one loop: compile (warnings fatal), format, test. Heavy sensors belong in
+  # the Lens pass (`make verify`), not here.
+  defp aliases do
+    [
+      precommit: ["compile --warning-as-errors", "format", "test"]
+    ]
+  end
+
   defp package do
     [
       licenses: ["MIT"],