Add What's New changelog page

- ChangelogParser: parses priv/static/changelog.txt into structured entries
- ChangelogLive: timeline view with DaisyUI styling
- Route at /changelog in authenticated scope
- What's New link in org dropdown menu

lib/towerops_web/changelog_parser.ex

@@ -0,0 +1,48 @@
+defmodule ToweropsWeb.ChangelogParser do
+  @moduledoc "Parses priv/static/changelog.txt into structured entries."
+
+  @doc "Returns a list of %{date: Date.t(), title: String.t(), items: [String.t()]}"
+  def parse do
+    path = Application.app_dir(:towerops, "priv/static/changelog.txt")
+
+    case File.read(path) do
+      {:ok, content} -> parse_content(content)
+      {:error, _} -> []
+    end
+  end
+
+  defp parse_content(content) do
+    content
+    |> String.split("\n")
+    |> Enum.reduce([], fn line, acc ->
+      cond do
+        # Date header with title: "2026-02-13 — Title"
+        Regex.match?(~r/^\d{4}-\d{2}-\d{2}\s*[—–-]\s*.+/, line) ->
+          [date_str, title] = String.split(line, ~r/\s*[—–-]\s*/, parts: 2)
+          entry = %{date: Date.from_iso8601!(String.trim(date_str)), title: String.trim(title), items: []}
+          [entry | acc]
+
+        # Date header without title: "2026-02-13"
+        Regex.match?(~r/^\d{4}-\d{2}-\d{2}\s*$/, line) ->
+          date = Date.from_iso8601!(String.trim(line))
+          entry = %{date: date, title: nil, items: []}
+          [entry | acc]
+
+        # Bullet point
+        String.starts_with?(String.trim(line), "* ") ->
+          case acc do
+            [current | rest] ->
+              item = String.trim(line) |> String.trim_leading("* ")
+              [%{current | items: current.items ++ [item]} | rest]
+
+            [] ->
+              acc
+          end
+
+        true ->
+          acc
+      end
+    end)
+    |> Enum.reverse()
+  end
+end

lib/towerops_web/components/layouts.ex

@@ -366,6 +366,14 @@ defmodule ToweropsWeb.Layouts do
                   >
                     My Data
                   </.link>
+                  <.link
+                    role="menuitem"
+                    navigate={~p"/changelog"}
+                    class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 hover:text-gray-900 focus:outline-hidden dark:text-gray-300 dark:hover:bg-white/5 dark:hover:text-white"
+                    phx-click={JS.hide(to: "#org-menu")}
+                  >
+                    🆕 What's New
+                  </.link>
                   <.link
                     role="menuitem"
                     href={~p"/users/log-out"}

lib/towerops_web/live/changelog_live.ex

@@ -0,0 +1,34 @@
+defmodule ToweropsWeb.ChangelogLive do
+  use ToweropsWeb, :live_view
+
+  @impl true
+  def mount(_params, _session, socket) do
+    entries = ToweropsWeb.ChangelogParser.parse()
+    {:ok, assign(socket, entries: entries, page_title: "What's New", active_page: "changelog")}
+  end
+
+  @impl true
+  def render(assigns) do
+    ~H"""
+    <div class="mx-auto max-w-3xl px-4 py-8">
+      <h1 class="text-3xl font-bold mb-2">What's New</h1>
+      <p class="text-base-content/60 mb-8">Latest updates and improvements to TowerOps.</p>
+
+      <div class="space-y-8">
+        <div :for={entry <- @entries} class="relative pl-8 border-l-2 border-primary/20">
+          <div class="absolute -left-[9px] top-1 w-4 h-4 rounded-full bg-primary border-2 border-base-100" />
+          <div class="mb-1">
+            <span class="badge badge-ghost badge-sm font-mono">
+              {Calendar.strftime(entry.date, "%b %d, %Y")}
+            </span>
+          </div>
+          <h2 :if={entry.title} class="text-lg font-semibold mb-2">{entry.title}</h2>
+          <ul :if={entry.items != []} class="list-disc list-inside space-y-1 text-base-content/80 text-sm">
+            <li :for={item <- entry.items}>{item}</li>
+          </ul>
+        </div>
+      </div>
+    </div>
+    """
+  end
+end

lib/towerops_web/router.ex

@@ -371,6 +371,9 @@ defmodule ToweropsWeb.Router do
       # Activity feed
       live "/activity", ActivityFeedLive, :index
 
+      # Changelog
+      live "/changelog", ChangelogLive, :index
+
       # Network map route
       live "/network-map", NetworkMapLive, :index
     end