feat: сборка в nginx и режим превью (noindex, без контактов)

refs breazu/breazu#2

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

report.html

@@ -3,6 +3,7 @@
 <head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="robots" content="noindex, nofollow">
 <title>breazu — Sample Audit</title>
 <meta name="description" content="Sample independent audit of a synthetic fixed-price development proposal — 10 findings, 7 amendments, a verdict.">
 <link rel="icon" href="assets/app_icon_light.svg" type="image/svg+xml">