Extract dashboard parsed body renderer

Extract the dashboard markdown renderer into ParsedBody.tsx and remove stale inline parser helpers from App.tsx.

apps/dashboard/src/ParsedBody.tsx

@@ -0,0 +1,37 @@
+import { useMemo, type ReactNode } from 'react';
+import ReactMarkdown from 'react-markdown';
+import remarkGfm from 'remark-gfm';
+
+const SECRET_ASSIGNMENT_RE =
+  /\b([A-Z0-9_]*(?:TOKEN|SECRET|PASSWORD|API_KEY|AUTH|PRIVATE_KEY)[A-Z0-9_]*)\s*=\s*([^\s"'`]+)/gi;
+const SECRET_VALUE_RE =
+  /\b(?:sk-[A-Za-z0-9_-]{12,}|gh[pousr]_[A-Za-z0-9_]{12,}|xox[baprs]-[A-Za-z0-9-]{12,}|eyJ[A-Za-z0-9_-]{20,}\.[A-Za-z0-9_-]{20,}\.[A-Za-z0-9_-]{10,})\b/g;
+
+export function ParsedBody({
+  text,
+  truncate,
+}: {
+  text: string | null | undefined;
+  truncate?: number;
+}): ReactNode {
+  const cleaned = useMemo(() => {
+    if (!text) return '';
+    let out = text
+      .replace(SECRET_ASSIGNMENT_RE, (_m, key) => `${key}=***`)
+      .replace(SECRET_VALUE_RE, '***');
+    if (truncate && out.length > truncate) {
+      out = out.slice(0, truncate) + '…';
+    }
+    return out;
+  }, [text, truncate]);
+
+  if (!cleaned.trim()) {
+    return <span className="parsed-empty">—</span>;
+  }
+
+  return (
+    <div className="parsed-body">
+      <ReactMarkdown remarkPlugins={[remarkGfm]}>{cleaned}</ReactMarkdown>
+    </div>
+  );
+}