feat(c4): lançamento de pedido — catálogo, alçada por linha, POST /orders

- Prisma: Product + RepDiscountLimit + productCategory em OrderItem + migration
- Seed: 28 produtos (5 categorias) + alçadas user-001 (default 10%, bebidas 8%, perecíveis 5%)
- @sar/api-interface: ProductSummarySchema, ProductDetailSchema, ProductSyncRequestSchema, CreateOrderSchema
- API: CatalogModule (GET /catalog, GET /catalog/:id, POST /catalog/sync)
- API: POST /orders — valida alçada por linha/produto (OQ-2), idempotency-key (FR-4.3), desnorm cliente
- Web: NewOrderPage (3 steps: catálogo → desconto/obs → confirmação)
- Web: botão Novo Pedido na ClientDetailPage (desabilitado se financialStatus=blocked)
- Web: rota /pedidos/novo com search param clientId

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/prisma/migrations/20260527233639_c4_catalog/migration.sql

@@ -0,0 +1,52 @@
+-- AlterTable
+ALTER TABLE "OrderItem" ADD COLUMN     "productCategory" TEXT NOT NULL DEFAULT 'geral';
+
+-- CreateTable
+CREATE TABLE "Product" (
+    "id" UUID NOT NULL,
+    "code" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "description" TEXT,
+    "category" TEXT NOT NULL DEFAULT 'geral',
+    "unitPrice" DECIMAL(15,2) NOT NULL,
+    "stock" DECIMAL(10,3),
+    "active" BOOLEAN NOT NULL DEFAULT true,
+    "erpCode" TEXT,
+    "syncedAt" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "deletedAt" TIMESTAMP(3),
+
+    CONSTRAINT "Product_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "RepDiscountLimit" (
+    "repId" TEXT NOT NULL,
+    "category" TEXT NOT NULL,
+    "limit" DECIMAL(5,2) NOT NULL DEFAULT 5,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "RepDiscountLimit_pkey" PRIMARY KEY ("repId","category")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Product_code_key" ON "Product"("code");
+
+-- CreateIndex
+CREATE INDEX "Product_code_idx" ON "Product"("code");
+
+-- CreateIndex
+CREATE INDEX "Product_name_idx" ON "Product"("name");
+
+-- CreateIndex
+CREATE INDEX "Product_category_idx" ON "Product"("category");
+
+-- CreateIndex
+CREATE INDEX "Product_active_idx" ON "Product"("active");
+
+-- CreateIndex
+CREATE INDEX "Product_deletedAt_idx" ON "Product"("deletedAt");
+
+-- CreateIndex
+CREATE INDEX "RepDiscountLimit_repId_idx" ON "RepDiscountLimit"("repId");