diff --git a/blogex/lib/blogex/router.ex b/blogex/lib/blogex/router.ex
index 5e611eb..383b0d9 100644
--- a/blogex/lib/blogex/router.ex
+++ b/blogex/lib/blogex/router.ex
@@ -75,11 +75,14 @@ defmodule Blogex.Router do
     else
       conn
       |> put_resp_content_type("application/json")
-      |> send_resp(200, Jason.encode!(%{
-        blog: blog.blog_id(),
-        tag: tag,
-        posts: Enum.map(posts, &post_json/1)
-      }))
+      |> send_resp(
+        200,
+        Jason.encode!(%{
+          blog: blog.blog_id(),
+          tag: tag,
+          posts: Enum.map(posts, &post_json/1)
+        })
+      )
     end
   end
 
@@ -121,14 +124,17 @@ defmodule Blogex.Router do
     else
       conn
       |> put_resp_content_type("application/json")
-      |> send_resp(200, Jason.encode!(%{
-        blog: blog.blog_id(),
-        title: blog.title(),
-        posts: Enum.map(result.entries, &post_json/1),
-        page: result.page,
-        total_pages: result.total_pages,
-        total_entries: result.total_entries
-      }))
+      |> send_resp(
+        200,
+        Jason.encode!(%{
+          blog: blog.blog_id(),
+          title: blog.title(),
+          posts: Enum.map(result.entries, &post_json/1),
+          page: result.page,
+          total_pages: result.total_pages,
+          total_entries: result.total_entries
+        })
+      )
     end
   end
 
diff --git a/blogex/test/blogex/blog_test.exs b/blogex/test/blogex/blog_test.exs
index 6b5afd2..a9b0b2b 100644
--- a/blogex/test/blogex/blog_test.exs
+++ b/blogex/test/blogex/blog_test.exs
@@ -22,10 +22,11 @@ defmodule Blogex.BlogTest do
     end
 
     test "includes today-dated published posts" do
-      {:ok, _} = FakeBlog.start([
-        build(id: "today", date: Date.utc_today(), published: true),
-        build(id: "tomorrow", date: Date.add(Date.utc_today(), 1), published: true)
-      ])
+      {:ok, _} =
+        FakeBlog.start([
+          build(id: "today", date: Date.utc_today(), published: true),
+          build(id: "tomorrow", date: Date.add(Date.utc_today(), 1), published: true)
+        ])
 
       ids = FakeBlog.all_posts() |> Enum.map(& &1.id)
 
@@ -77,10 +78,11 @@ defmodule Blogex.BlogTest do
     end
 
     test "excludes drafts even if tag matches" do
-      {:ok, _} = FakeBlog.start([
-        build(id: "pub", tags: ["elixir"], published: true),
-        build(id: "draft", tags: ["elixir"], published: false)
-      ])
+      {:ok, _} =
+        FakeBlog.start([
+          build(id: "pub", tags: ["elixir"], published: true),
+          build(id: "draft", tags: ["elixir"], published: false)
+        ])
 
       ids = FakeBlog.posts_by_tag("elixir") |> Enum.map(& &1.id)
 
@@ -103,10 +105,11 @@ defmodule Blogex.BlogTest do
     end
 
     test "excludes tags only appearing on drafts" do
-      {:ok, _} = FakeBlog.start([
-        build(tags: ["visible"], published: true),
-        build(id: "d", tags: ["hidden"], published: false)
-      ])
+      {:ok, _} =
+        FakeBlog.start([
+          build(tags: ["visible"], published: true),
+          build(id: "d", tags: ["hidden"], published: false)
+        ])
 
       refute "hidden" in FakeBlog.all_tags()
     end
diff --git a/blogex/test/blogex/feed_test.exs b/blogex/test/blogex/feed_test.exs
index b33b89a..562f041 100644
--- a/blogex/test/blogex/feed_test.exs
+++ b/blogex/test/blogex/feed_test.exs
@@ -109,10 +109,11 @@ defmodule Blogex.FeedTest do
 
   describe "XML escaping" do
     test "escapes special characters in titles" do
-      {:ok, _} = FakeBlog.start(
-        [build(title: "Foo & Bar <Baz>")],
-        title: "A & B"
-      )
+      {:ok, _} =
+        FakeBlog.start(
+          [build(title: "Foo & Bar <Baz>")],
+          title: "A & B"
+        )
 
       xml = Feed.rss(FakeBlog, @base_url)
 
diff --git a/blogex/test/blogex/registry_test.exs b/blogex/test/blogex/registry_test.exs
index 795880b..cfc7c72 100644
--- a/blogex/test/blogex/registry_test.exs
+++ b/blogex/test/blogex/registry_test.exs
@@ -6,19 +6,30 @@ defmodule Blogex.RegistryTest do
 
   defmodule AlphaBlog do
     def blog_id, do: :alpha
-    def all_posts, do: [Blogex.Test.PostBuilder.build(id: "a1", date: ~D[2026-03-01], blog: :alpha)]
+
+    def all_posts,
+      do: [Blogex.Test.PostBuilder.build(id: "a1", date: ~D[2026-03-01], blog: :alpha)]
+
     def all_tags, do: ["elixir"]
 
     def unfiltered_posts,
       do: [
         Blogex.Test.PostBuilder.build(id: "a1", date: ~D[2026-03-01], blog: :alpha),
-        Blogex.Test.PostBuilder.build(id: "a-draft", date: ~D[2026-03-05], blog: :alpha, published: false)
+        Blogex.Test.PostBuilder.build(
+          id: "a-draft",
+          date: ~D[2026-03-05],
+          blog: :alpha,
+          published: false
+        )
       ]
   end
 
   defmodule BetaBlog do
     def blog_id, do: :beta
-    def all_posts, do: [Blogex.Test.PostBuilder.build(id: "b1", date: ~D[2026-03-15], blog: :beta)]
+
+    def all_posts,
+      do: [Blogex.Test.PostBuilder.build(id: "b1", date: ~D[2026-03-15], blog: :beta)]
+
     def all_tags, do: ["devops"]
 
     def unfiltered_posts,
diff --git a/blogex/test/blogex/router_test.exs b/blogex/test/blogex/router_test.exs
index f082674..004bf75 100644
--- a/blogex/test/blogex/router_test.exs
+++ b/blogex/test/blogex/router_test.exs
@@ -10,15 +10,22 @@ defmodule Blogex.RouterTest do
       build(id: "first-post", title: "First", tags: ["elixir"], date: ~D[2026-03-10]),
       build(id: "second-post", title: "Second", tags: ["otp"], date: ~D[2026-02-01]),
       build(id: "draft", published: false, date: ~D[2026-03-12]),
-      build(id: "future-post", title: "Future", tags: ["elixir"], date: ~D[2099-01-01], published: true)
+      build(
+        id: "future-post",
+        title: "Future",
+        tags: ["elixir"],
+        date: ~D[2099-01-01],
+        published: true
+      )
     ]
 
-    {:ok, _} = FakeBlog.start(posts,
-      blog_id: :test,
-      title: "Test Blog",
-      description: "Test",
-      base_path: "/blog/test"
-    )
+    {:ok, _} =
+      FakeBlog.start(posts,
+        blog_id: :test,
+        title: "Test Blog",
+        description: "Test",
+        base_path: "/blog/test"
+      )
 
     :ok
   end
diff --git a/blogex/test/support/fake_blog.ex b/blogex/test/support/fake_blog.ex
index a62d96b..d9601d5 100644
--- a/blogex/test/support/fake_blog.ex
+++ b/blogex/test/support/fake_blog.ex
@@ -35,7 +35,9 @@ defmodule Blogex.Test.FakeBlog do
     }
 
     case Agent.start(fn -> state end, name: __MODULE__) do
-      {:ok, pid} -> {:ok, pid}
+      {:ok, pid} ->
+        {:ok, pid}
+
       {:error, {:already_started, pid}} ->
         Agent.update(__MODULE__, fn _ -> state end)
         {:ok, pid}