chore: initial snapshot of 2meet-data-optimizer v0.1.0

Baseline before backporting wp-data-optimizer v3.0.1-v3.4.6.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TbG1keQQ7XBa7qMQY16KCY

includes/back-compat/interface-wpdo-entity-adapter-alias.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * Backward-compat interface alias.
+ *
+ * PHP class_alias() does NOT support interfaces. This file declares
+ * `WPDO_Entity_Adapter_Interface` as a child of `TMDO_Entity_Adapter_Interface`
+ * (no new methods), which allows sister plugins that type-hint against the old
+ * name to keep working: the four TMDO adapters implement this interface, so
+ * `instanceof WPDO_Entity_Adapter_Interface` returns true for all of them.
+ *
+ * Loaded by `class-tmdo-back-compat.php` after the real interface is loaded.
+ *
+ * @package TMDO
+ * @since   0.1.0
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+if ( ! interface_exists( 'WPDO_Entity_Adapter_Interface', false ) && interface_exists( 'TMDO_Entity_Adapter_Interface', false ) ) {
+	/**
+	 * Backward-compat alias interface. Any class implementing
+	 * `WPDO_Entity_Adapter_Interface` automatically satisfies
+	 * `TMDO_Entity_Adapter_Interface` and vice-versa.
+	 *
+	 * Will emit `_doing_it_wrong()` notice in v0.2.0+.
+	 */
+	interface WPDO_Entity_Adapter_Interface extends TMDO_Entity_Adapter_Interface {}
+}