Redirect the other www spelling to SITE_ORIGIN, hold roles to the role help and fix the audit findings

SITE_ORIGIN alone decides whether the site is www or not: CanonicalHostSubscriber
sends the other spelling there with 301, cms:site:origin writes the setting, the
system screen shows it. The roles now match the role help (editor: drafts,
publisher: live content, admin: design, settings, users, system). The installer no
longer reopens on an unreachable database, the session cookie follows ADMIN_PATH,
percent-encoded credentials no longer break the container, consent only accepts
same-site decisions, JSON-LD is HTML-safe, own CSS stays in its block, plus the
editor, updater, download and public-output findings from the full review
(ADR 099, ADR 100).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

scripts/build-release.php

@@ -67,7 +67,7 @@ echo "Fassung {$version}\n";
 // migrations.php und cli-config.php gehoeren dazu: ohne die erste findet Doctrine beim
 // Einrichten keine Migrationsliste und bricht mit "configuration file does not exist" ab - genau
 // dort, wo eine frische Installation ihre Tabellen anlegen will.
-$include = ['bin', 'config', 'migrations', 'public', 'src', 'templates', 'composer.json', 'composer.lock', 'migrations.php', 'cli-config.php', 'VERSION', 'README.md', 'LICENSE', '.env.example'];
+$include = ['bin', 'config', 'migrations', 'public', 'src', 'templates', 'composer.json', 'composer.lock', 'migrations.php', 'cli-config.php', 'VERSION', 'README.md', '.env.example'];
 $skip = ['.git', '.github', '.claude', '.gitattributes', '.gitignore', '.env.lock', '.php-cs-fixer.cache', 'node_modules', 'var', 'tests', 'scripts', 'reports', 'phpunit.xml.dist', '.php-cs-fixer.dist.php', 'package.json', 'package-lock.json', 'AGENTS.md', 'ENTWICKLUNGSPLAN.md', 'docs', 'composer.phar', '.venv', 'vendor', 'phpunit.cache', 'migrations.php.bak'];
 
 $copy = static function (string $from, string $to) use (&$copy, $skip): int {