Runner: json-Typ vor eigener Erkennung (R21), Erstdeploy-Rueckfall, json-index beim Veroeffentlichen

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

test/previewIndexParity.test.js

@@ -12,6 +12,7 @@ const FIXTURES = {
   mehrere: { 'a.html': 'aaaa', 'z.html': 'zzzzzzzz', 'css/s.css': 'c' },
   bevorzugt: { 'about.html': 'AAAAAAAAAA', 'main.html': 'm' },
   index: { 'index.html': 'I', 'other.html': 'o' },
+  typStatic: { 'index.html': 'I', 'package.json': '{"scripts":{"build":"x"}}', '.webklar-preview.json': '{"type":"static"}', 'a.css': 'c' },
   unterordner: { 'site/home.html': 'H', 'site/a.css': 'c', 'root.html': 'r' },
 }