htmlviewer-directediting: HTML rendering in Nextcloud iOS app

- htmlviewer: IEditor + Bridge + srcdoc iframe template + content controller
- text app: open() bridges text/html to htmlviewer template
- idempotent install.sh for re-deployment after app updates
- iPhone-tested 2026-09-11

testde2.php

@@ -0,0 +1,9 @@
+<?php
+$_SERVER['HTTP_USER_AGENT']='test';
+define('PHPUNIT_RUN', true);
+$_SERVER['REQUEST_URI']='/index.php';
+require "/var/www/html/lib/base.php";
+$m = \OC::$server->get(\OCP\DirectEditing\IManager::class);
+$ev = new \OCP\DirectEditing\RegisterDirectEditorEvent($m);
+\OC::$server->get(\OCP\EventDispatcher\IEventDispatcher::class)->dispatchTyped($ev);
+echo json_encode(array_keys($m->getEditors())), PHP_EOL;