feat: Implement complete APU (Análisis de Precios Unitarios) module

High priority features:
- APU CRUD with materials, labor, and equipment breakdown
- Labor catalog with FSR (Factor de Salario Real) calculation
- Equipment catalog with hourly cost calculation
- Link APU to budget line items (partidas)
- Explosion de insumos (consolidated materials list)

Additional features:
- Duplicate APU functionality
- Excel export for explosion de insumos
- Search and filters in APU list
- Price validation alerts for outdated prices
- PDF report export for APU

New components:
- APUForm, APUList, APUDetail
- ManoObraForm, EquipoForm
- ConfiguracionAPUForm
- VincularAPUDialog
- PartidasManager
- ExplosionInsumos
- APUPDF

New UI components:
- Alert component
- Tooltip component

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/app/(dashboard)/apu/mano-obra/[id]/editar/page.tsx

@@ -0,0 +1,44 @@
+import { auth } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+import { notFound } from "next/navigation";
+import { ManoObraForm } from "@/components/apu";
+
+async function getCategoria(empresaId: string, id: string) {
+  const categoria = await prisma.categoriaTrabajoAPU.findFirst({
+    where: { id, empresaId },
+  });
+
+  return categoria;
+}
+
+export default async function EditarManoObraPage({
+  params,
+}: {
+  params: Promise<{ id: string }>;
+}) {
+  const session = await auth();
+  const { id } = await params;
+
+  if (!session?.user?.empresaId) {
+    return <div>Error: No se encontro la empresa</div>;
+  }
+
+  const categoria = await getCategoria(session.user.empresaId, id);
+
+  if (!categoria) {
+    notFound();
+  }
+
+  return (
+    <div className="space-y-6">
+      <div>
+        <h1 className="text-2xl font-bold">Editar Categoria de Mano de Obra</h1>
+        <p className="text-slate-600">
+          Modificando {categoria.codigo} - {categoria.nombre}
+        </p>
+      </div>
+
+      <ManoObraForm categoria={categoria} />
+    </div>
+  );
+}