Sacar pestaña Test del admin

- Borrado public/components/test-panel.js + su nav button + su rango de
  router + sus rutas /test/products-with-stock y /test/order.
- Borrados handleGetProductsWithStock + handleCreateTestOrder y los
  api wrappers getProductsWithStock + createTestOrder. Ya no se usan en
  ningún flujo: pruebas de bot se hacen vía simulator.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

public/lib/router.js

@@ -16,7 +16,6 @@ const ROUTES = [
   { pattern: /^\/cantidades$/, view: "quantities", params: [] },
   { pattern: /^\/pedidos$/, view: "orders", params: [] },
   { pattern: /^\/pedidos\/([^/]+)$/, view: "orders", params: ["id"] },
-  { pattern: /^\/test$/, view: "test", params: [] },
   { pattern: /^\/config-prompts$/, view: "prompts", params: [] },
   { pattern: /^\/atencion-humana$/, view: "takeovers", params: [] },
   { pattern: /^\/configuracion$/, view: "settings", params: [] },
@@ -33,7 +32,6 @@ const VIEW_TO_PATH = {
   crosssell: "/crosssell",
   quantities: "/cantidades",
   orders: "/pedidos",
-  test: "/test",
   prompts: "/config-prompts",
   takeovers: "/atencion-humana",
   settings: "/configuracion",