Add real replacement pages for Pages, Media Library, and Users (v2.6.0)

Completes the "skinned vs. replaced" conversion started with Posts —
every native list-table screen the user asked about now has a genuine
custom Vue page behind it instead of dark-themed CSS over the native
markup. All three follow the same pattern as Posts: own REST controller
in admin/src/Rest/, own Vue page matching the Comments layout, native
screen redirected away (direct visits too, not just the sidebar link),
gated by its own Settings toggle defaulting to on.

- Pages (PagesData.php + Pages.vue): same as Posts, parent page shown
  instead of categories. edit.php?post_type=page redirects; other post
  types untouched.
- Media Library (MediaData.php + Media.vue): thumbnail grid with type
  filters (Images/Audio/Video/Documents/Unattached). Replaces the
  browse/library experience only — media-new.php (the actual upload
  screen) is untouched, same reasoning as leaving the block editor
  alone for Posts/Pages.
- Users (UsersData.php + Users.vue): filterable by role. Deleting a
  user always reassigns their content to whoever performs the deletion
  rather than exposing WP core's reassign-or-delete-everything choice
  as a one-click action — deliberately simplified to avoid a surprising,
  highly destructive default. user-new.php untouched.

Verified live: Media's grid renders real thumbnails/dimensions/file
sizes with working filters and search; Users shows real accounts with
role filters and correctly hides delete for the current user; both
redirect correctly from their native URLs.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

admin/src/Pages/SubApps.php

@@ -47,6 +47,9 @@ class SubApps
     "aurora-admin-plugins" => ["title" => "Installed Plugins", "entry" => "plugins", "feature" => null],
     "aurora-admin-comments" => ["title" => "Comments", "entry" => "comments", "feature" => null],
     "aurora-admin-posts" => ["title" => "Posts", "entry" => "posts", "feature" => null],
+    "aurora-admin-pages" => ["title" => "Pages", "entry" => "pages", "feature" => null],
+    "aurora-admin-media" => ["title" => "Media Library", "entry" => "media", "feature" => null],
+    "aurora-admin-users" => ["title" => "Users", "entry" => "users", "feature" => null],
   ];
 
   private static $hook_suffixes = [];
@@ -82,6 +85,15 @@ class SubApps
     if ($slug === "aurora-admin-posts") {
       return "edit.php";
     }
+    if ($slug === "aurora-admin-pages") {
+      return "edit.php?post_type=page";
+    }
+    if ($slug === "aurora-admin-media") {
+      return "upload.php";
+    }
+    if ($slug === "aurora-admin-users") {
+      return "users.php";
+    }
     return "aurora-admin";
   }
 
@@ -93,6 +105,15 @@ class SubApps
     if ($slug === "aurora-admin-comments" || $slug === "aurora-admin-posts") {
       return "edit_posts";
     }
+    if ($slug === "aurora-admin-pages") {
+      return "edit_pages";
+    }
+    if ($slug === "aurora-admin-media") {
+      return "upload_files";
+    }
+    if ($slug === "aurora-admin-users") {
+      return "list_users";
+    }
     return "manage_options";
   }
 
@@ -146,6 +167,41 @@ class SubApps
       wp_safe_redirect(admin_url("admin.php?page=aurora-admin-posts"));
       exit;
     }
+
+    // Settings > Pages > "Modern pages table".
+    if (
+      $pagenow === "edit.php" &&
+      $post_type === "page" &&
+      current_user_can("edit_pages") &&
+      Settings::get("modern_pages", true)
+    ) {
+      wp_safe_redirect(admin_url("admin.php?page=aurora-admin-pages"));
+      exit;
+    }
+
+    // Settings > Media > "Modern media library". upload.php serves both
+    // the default grid view and ?mode=list — both redirect the same way.
+    // media-new.php (the upload/drag-drop screen) is a separate file,
+    // untouched, same as post-new.php for Posts/Pages.
+    if (
+      $pagenow === "upload.php" &&
+      current_user_can("upload_files") &&
+      Settings::get("modern_media", true)
+    ) {
+      wp_safe_redirect(admin_url("admin.php?page=aurora-admin-media"));
+      exit;
+    }
+
+    // Settings > Users > "Modern users table". user-new.php (account
+    // creation) is a separate file, untouched.
+    if (
+      $pagenow === "users.php" &&
+      current_user_can("list_users") &&
+      Settings::get("modern_users", true)
+    ) {
+      wp_safe_redirect(admin_url("admin.php?page=aurora-admin-users"));
+      exit;
+    }
   }
 
   public static function render()
@@ -178,6 +234,9 @@ class SubApps
       "roles" => $roles,
       "tablePrefix" => $wpdb->prefix,
       "newPostUrl" => esc_url_raw(admin_url("post-new.php")),
+      "newPageUrl" => esc_url_raw(admin_url("post-new.php?post_type=page")),
+      "newMediaUrl" => esc_url_raw(admin_url("media-new.php")),
+      "newUserUrl" => esc_url_raw(admin_url("user-new.php")),
     ];
     $root_id = "aurora-admin-" . self::PAGES[$page]["entry"] . "-root";
     ?>