Initial commit: Port Nimara CRM (Layers 0-4)

Full CRM rebuild with Next.js 15, TypeScript, Tailwind, Drizzle ORM,
PostgreSQL, Redis, BullMQ, MinIO, and Socket.io. Includes 461 source
files covering clients, berths, interests/pipeline, documents/EOI,
expenses/invoices, email, notifications, dashboard, admin, and
client portal. CI/CD via Gitea Actions with Docker builds.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/shared/page-header.tsx

@@ -0,0 +1,27 @@
+import { type ReactNode } from 'react';
+import { cn } from '@/lib/utils';
+
+interface PageHeaderProps {
+  title: string;
+  description?: string;
+  actions?: ReactNode;
+  className?: string;
+}
+
+/**
+ * Consistent page-level header: title, optional description, and an action
+ * slot (typically buttons — e.g. "New Client", "Export").
+ */
+export function PageHeader({ title, description, actions, className }: PageHeaderProps) {
+  return (
+    <div className={cn('flex items-start justify-between gap-4 mb-6', className)}>
+      <div className="min-w-0">
+        <h1 className="text-2xl font-bold text-foreground tracking-tight truncate">{title}</h1>
+        {description && (
+          <p className="mt-1 text-sm text-muted-foreground">{description}</p>
+        )}
+      </div>
+      {actions && <div className="flex items-center gap-2 shrink-0">{actions}</div>}
+    </div>
+  );
+}