feat: unified watch server under org-garden

org-garden/lib/org_garden/supervisor.ex

@@ -0,0 +1,40 @@
+defmodule OrgGarden.Supervisor do
+  @moduledoc """
+  Supervises development server components.
+
+  Strategy: :one_for_all
+  If either child fails, restart both to ensure consistent state.
+
+  Children:
+    1. OrgGarden.Watcher - watches .org files for changes
+    2. OrgGarden.Quartz  - runs Quartz Node.js server
+
+  ## Usage
+
+      OrgGarden.Supervisor.start_link(
+        notes_dir: "/path/to/notes",
+        output_dir: "/path/to/output",
+        content_dir: "/path/to/output/content",
+        pipeline_opts: %{zotero_url: "...", ...},
+        transforms: [OrgGarden.Transforms.Citations],
+        port: 8080,
+        ws_port: 3001
+      )
+  """
+  use Supervisor
+
+  def start_link(opts) do
+    Supervisor.start_link(__MODULE__, opts, name: __MODULE__)
+  end
+
+  @impl true
+  def init(opts) do
+    children = [
+      {OrgGarden.Watcher,
+       Keyword.take(opts, [:notes_dir, :output_dir, :content_dir, :pipeline_opts, :transforms])},
+      {OrgGarden.Quartz, Keyword.take(opts, [:content_dir, :port, :ws_port])}
+    ]
+
+    Supervisor.init(children, strategy: :one_for_all)
+  end
+end