feat: triage panel — severity + DOSH checklist, transitions reported→triaged

Also excludes node_modules.nosync from tsconfig to fix pre-existing TS type check bleed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FFDuBhMKvoWjrWT3ZnGmmr

app/(protected)/hse/incidents/[id]/page.tsx

@@ -30,12 +30,45 @@ export default async function HseIncidentDetailPage({ params }: Props) {
 
   if (error || !incident) notFound()
 
+  const status = (incident as { status: string }).status
+
   return (
     <main className="max-w-3xl mx-auto px-4 py-6">
       <Link href="/hse/incidents" className="text-sm text-blue-600 hover:underline mb-4 inline-block">
         ← Back to inbox
       </Link>
       <IncidentDetail incident={incident as unknown as Incident} />
+
+      {status === 'reported' && (
+        <div className="mt-6">
+          <Link
+            href={`/hse/incidents/${id}/triage`}
+            className="inline-block bg-blue-600 text-white rounded-lg px-4 py-2 text-sm font-semibold hover:bg-blue-700"
+          >
+            Triage Incident
+          </Link>
+        </div>
+      )}
+      {status === 'triaged' && (
+        <div className="mt-6">
+          <Link
+            href={`/hse/incidents/${id}/investigation`}
+            className="inline-block bg-indigo-600 text-white rounded-lg px-4 py-2 text-sm font-semibold hover:bg-indigo-700"
+          >
+            Start Investigation
+          </Link>
+        </div>
+      )}
+      {(['investigating', 'capa_pending'] as string[]).includes(status) && (
+        <div className="mt-6">
+          <Link
+            href={`/hse/incidents/${id}/capa/new`}
+            className="inline-block bg-amber-600 text-white rounded-lg px-4 py-2 text-sm font-semibold hover:bg-amber-700"
+          >
+            Add CAPA Action
+          </Link>
+        </div>
+      )}
     </main>
   )
 }