rename project from SimpleshopTheme to Berrypod

All modules, configs, paths, and references updated.
836 tests pass, zero warnings.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/berrypod_web/plugs/cache_raw_body.ex

@@ -0,0 +1,22 @@
+defmodule BerrypodWeb.Plugs.CacheRawBody do
+  @moduledoc """
+  Custom body reader that caches the raw request body for webhook signature verification.
+  Used with Plug.Parsers :body_reader option.
+  """
+
+  def read_body(conn, opts) do
+    case Plug.Conn.read_body(conn, opts) do
+      {:ok, body, conn} ->
+        conn = Plug.Conn.assign(conn, :raw_body, body)
+        {:ok, body, conn}
+
+      {:more, body, conn} ->
+        existing = conn.assigns[:raw_body] || ""
+        conn = Plug.Conn.assign(conn, :raw_body, existing <> body)
+        {:more, body, conn}
+
+      {:error, reason} ->
+        {:error, reason}
+    end
+  end
+end