test: dublê central de next/navigation para todos os testes

jest.config.ts

@@ -12,6 +12,8 @@ const config: Config = {
     "^@/(.*)$": "<rootDir>/$1",
     "^.+\\.(css|sass|scss)$": "identity-obj-proxy",
     "^server-only$": "<rootDir>/lib/__mocks__/server-only.ts",
+    // dublê completo e central: nenhum teste monta um mock parcial de next/navigation
+    "^next/navigation$": "<rootDir>/__mocks__/next/navigation.ts",
   },
   testMatch: ["**/__tests__/**/*.[jt]s?(x)", "**/?(*.)+(spec|test).[jt]s?(x)"],
   transform: {