fix(academy): let content staff edit media details

web/app/mu-plugins/cbf-staff-media-details.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * Let content staff edit media details.
+ *
+ * WordPress maps editing an attachment to edit_posts when the user uploaded it
+ * and to edit_others_posts when someone else did. Content Editors and Reviewers
+ * can upload files but have neither capability, so they can't set the title,
+ * alt text, caption or description of any image, including their own uploads.
+ *
+ * This lets anyone who can edit LearnDash courses (edit_courses) edit any
+ * attachment's details. Deleting attachments keeps core's rules.
+ *
+ * @package CBF
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+add_filter(
+	'map_meta_cap',
+	static function ( array $caps, string $cap, int $user_id, array $args ): array {
+		if ( $cap !== 'edit_post' || empty( $args[0] ) || ! $user_id ) {
+			return $caps;
+		}
+
+		$post = get_post( $args[0] );
+
+		if ( ! $post || $post->post_type !== 'attachment' || $post->post_status === 'trash' ) {
+			return $caps;
+		}
+
+		if ( ! user_can( $user_id, 'edit_courses' ) || user_can( $user_id, 'edit_posts' ) ) {
+			return $caps;
+		}
+
+		return array( 'edit_courses' );
+	},
+	10,
+	4
+);