Redact: collapsible advanced settings, download TXT/DOCX/copy

- Wrap Mode/Region/Entities/Officials/Output/Exempt/Aliases in a
  <details> toggle so the form opens clean with only engine + input visible
- After redaction: Copy, Download .txt, Download .docx buttons appear
  below the redacted output (all four languages translated)
- New api/redact-download.php: returns plain text or a minimal valid
  DOCX built from scratch with ZipArchive (no external dependencies)

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

api/redact-download.php

@@ -0,0 +1,129 @@
+<?php
+declare(strict_types=1);
+
+require_once __DIR__ . '/../includes/LegalTools.php';
+
+dbnToolsRequireMethod('POST');
+dbnToolsRequireAuth();
+
+$input  = dbnToolsJsonInput(600000);
+$text   = dbnToolsString($input, 'text', 500000);
+$format = in_array((string)($input['format'] ?? ''), ['txt', 'docx'], true)
+    ? (string)$input['format']
+    : 'txt';
+
+if ($format === 'txt') {
+    header('Content-Type: text/plain; charset=UTF-8');
+    header('Content-Disposition: attachment; filename="redacted.txt"');
+    header('Cache-Control: no-store');
+    echo $text;
+    exit;
+}
+
+// DOCX: minimal valid Office Open XML package built with ZipArchive
+if (!class_exists('ZipArchive')) {
+    http_response_code(500);
+    echo json_encode(['error' => ['message' => 'ZipArchive extension not available.']]);
+    exit;
+}
+
+$docx = buildMinimalDocx($text);
+
+header('Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document');
+header('Content-Disposition: attachment; filename="redacted.docx"');
+header('Content-Length: ' . strlen($docx));
+header('Cache-Control: no-store');
+echo $docx;
+exit;
+
+function buildMinimalDocx(string $text): string
+{
+    $tmp = tempnam(sys_get_temp_dir(), 'dbn_docx_');
+    @unlink($tmp);
+    $tmp .= '.docx';
+
+    $zip = new ZipArchive();
+    $zip->open($tmp, ZipArchive::CREATE | ZipArchive::OVERWRITE);
+
+    $zip->addFromString('[Content_Types].xml', contentTypesXml());
+    $zip->addFromString('_rels/.rels', relsXml());
+    $zip->addFromString('word/document.xml', documentXml($text));
+    $zip->addFromString('word/_rels/document.xml.rels', wordRelsXml());
+    $zip->addFromString('docProps/app.xml', appXml());
+    $zip->addFromString('docProps/core.xml', coreXml());
+
+    $zip->close();
+
+    $bytes = file_get_contents($tmp);
+    @unlink($tmp);
+    return $bytes;
+}
+
+function documentXml(string $text): string
+{
+    $lines = explode("\n", str_replace("\r\n", "\n", str_replace("\r", "\n", $text)));
+    $paras = [];
+    foreach ($lines as $line) {
+        $safe = htmlspecialchars($line, ENT_XML1 | ENT_COMPAT, 'UTF-8');
+        if ($safe === '') {
+            $paras[] = '<w:p/>';
+        } else {
+            $paras[] = '<w:p><w:r><w:rPr><w:rFonts w:ascii="Courier New" w:hAnsi="Courier New"/><w:sz w:val="20"/></w:rPr>'
+                     . '<w:t xml:space="preserve">' . $safe . '</w:t></w:r></w:p>';
+        }
+    }
+    return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+        . '<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">'
+        . '<w:body>' . implode('', $paras)
+        . '<w:sectPr><w:pgSz w:w="12240" w:h="15840"/>'
+        . '<w:pgMar w:top="1440" w:right="1440" w:bottom="1440" w:left="1440"/>'
+        . '</w:sectPr></w:body></w:document>';
+}
+
+function contentTypesXml(): string
+{
+    return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+        . '<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">'
+        . '<Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>'
+        . '<Default Extension="xml" ContentType="application/xml"/>'
+        . '<Override PartName="/word/document.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.document.main+xml"/>'
+        . '<Override PartName="/docProps/app.xml" ContentType="application/vnd.openxmlformats-officedocument.extended-properties+xml"/>'
+        . '<Override PartName="/docProps/core.xml" ContentType="application/package/2006/metadata/core-properties+xml"/>'
+        . '</Types>';
+}
+
+function relsXml(): string
+{
+    return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+        . '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">'
+        . '<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="word/document.xml"/>'
+        . '<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties" Target="docProps/core.xml"/>'
+        . '<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties" Target="docProps/app.xml"/>'
+        . '</Relationships>';
+}
+
+function wordRelsXml(): string
+{
+    return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+        . '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"/>';
+}
+
+function appXml(): string
+{
+    return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+        . '<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties">'
+        . '<Application>DoBetterNorge Redact</Application>'
+        . '</Properties>';
+}
+
+function coreXml(): string
+{
+    $date = date('Y-m-d\TH:i:s\Z');
+    return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'
+        . '<cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties"'
+        . ' xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/"'
+        . ' xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">'
+        . '<dc:creator>DoBetterNorge</dc:creator>'
+        . '<dcterms:created xsi:type="dcterms:W3CDTF">' . $date . '</dcterms:created>'
+        . '</cp:coreProperties>';
+}