fix(admin): load delegate classes from orchestrator + add WP stubs for tests

The admin refactor split introduced delegate classes that the orchestrator
instantiates in its constructor. CI failed because tests require the
orchestrator directly without going through the plugin loader. Fix: add
require_once for all delegate files at the top of the orchestrator, and
add missing WP function stubs to the test bootstrap.

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

admin/class-peptide-news-admin.php

@@ -17,6 +17,16 @@ declare( strict_types=1 );
  * @see Peptide_News_Admin_Settings_Page — Settings page + log viewer
  * @see Peptide_News_Admin_Dashboard_Pages — Dashboard/articles/costs pages
  */
+
+// Load delegate classes that this orchestrator depends on.
+require_once __DIR__ . '/class-pn-admin-assets.php';
+require_once __DIR__ . '/class-pn-admin-menu.php';
+require_once __DIR__ . '/class-pn-admin-field-renderers.php';
+require_once __DIR__ . '/class-pn-admin-settings.php';
+require_once __DIR__ . '/class-pn-admin-log-viewer.php';
+require_once __DIR__ . '/class-pn-admin-settings-page.php';
+require_once __DIR__ . '/class-pn-admin-dashboard-pages.php';
+
 class Peptide_News_Admin {
 
 	/** @var string Plugin name/slug */

tests/bootstrap.php

@@ -300,6 +300,55 @@ if ( ! function_exists( 'selected' ) ) {
         return $result;
     }
 }
+if ( ! function_exists( 'checked' ) ) {
+    function checked( $checked, $current = true, $echo = true ) {
+        $result = (string) $checked === (string) $current ? ' checked="checked"' : '';
+        if ( $echo ) {
+            echo $result;
+        }
+        return $result;
+    }
+}
+if ( ! function_exists( 'wp_enqueue_style' ) ) {
+    function wp_enqueue_style( $handle, $src = '', $deps = array(), $ver = false, $media = 'all' ) {
+        return true;
+    }
+}
+if ( ! function_exists( 'wp_enqueue_script' ) ) {
+    function wp_enqueue_script( $handle, $src = '', $deps = array(), $ver = false, $args = array() ) {
+        return true;
+    }
+}
+if ( ! function_exists( 'wp_localize_script' ) ) {
+    function wp_localize_script( $handle, $object_name, $l10n ) {
+        return true;
+    }
+}
+if ( ! function_exists( 'add_menu_page' ) ) {
+    function add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $callback = '', $icon_url = '', $position = null ) {
+        return $menu_slug;
+    }
+}
+if ( ! function_exists( 'add_submenu_page' ) ) {
+    function add_submenu_page( $parent_slug, $page_title, $menu_title, $capability, $menu_slug, $callback = '', $position = null ) {
+        return $menu_slug;
+    }
+}
+if ( ! function_exists( 'register_setting' ) ) {
+    function register_setting( $option_group, $option_name, $args = array() ) {
+        return true;
+    }
+}
+if ( ! function_exists( 'add_settings_section' ) ) {
+    function add_settings_section( $id, $title, $callback, $page, $args = array() ) {
+        return true;
+    }
+}
+if ( ! function_exists( 'add_settings_field' ) ) {
+    function add_settings_field( $id, $title, $callback, $page, $section = 'default', $args = array() ) {
+        return true;
+    }
+}
 
 // Cost tracker provides calculate_cost(), budget checks used by tests.
 require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-cost-tracker.php';