feat: scaffold plugin foundation

src/Plugin.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ * Plugin lifecycle coordinator.
+ *
+ * @package WPContentSync
+ */
+
+namespace WPContentSync;
+
+use WPContentSync\Admin\AdminPage;
+use WPContentSync\Logging\LoggerInterface;
+use WPContentSync\Logging\OptionLogger;
+use WPContentSync\Settings\SettingsRepository;
+
+final class Plugin {
+	private Container $container;
+
+	private function __construct( Container $container ) {
+		$this->container = $container;
+	}
+
+	public static function create(): self {
+		$container = new Container();
+
+		$container->factory(
+			SettingsRepository::class,
+			static function (): SettingsRepository {
+				return new SettingsRepository();
+			}
+		);
+
+		$container->factory(
+			LoggerInterface::class,
+			static function (): LoggerInterface {
+				return new OptionLogger();
+			}
+		);
+
+		$container->factory(
+			AdminPage::class,
+			static function () use ( $container ): AdminPage {
+				return new AdminPage(
+					$container->get( SettingsRepository::class ),
+					$container->get( LoggerInterface::class )
+				);
+			}
+		);
+
+		return new self( $container );
+	}
+
+	public function register(): void {
+		/** @var AdminPage $admin_page */
+		$admin_page = $this->container->get( AdminPage::class );
+
+		$admin_page->register();
+	}
+}