nmstate-console-plugin fails to build in hermetic mode due to yarn package manager incompatibility and Cypress test framework attempting network downloads during build process.
  

  OpenShift Container Platform 4.14+
  nmstate-console-plugin component across all affected versions
  

  Always - occurs when converting any nmstate-console-plugin build from network_mode: open to hermetic mode
  

  1. Remove network_mode: open from nmstate-console-plugin.yml configuration
  2. Attempt hermetic build via Konflux build system
  3. Build fails during npm install phase when Cypress tries to download binaries
  

  npm error Installing Cypress (version: 12.17.4)
  npm error The Cypress App could not be downloaded.
  npm error URL: https://download.cypress.io/desktop/12.17.4?platform=linux&arch=x64
  npm error Error: getaddrinfo ENOTFOUND download.cypress.io

  Build fails because:
  - Yarn package manager not supported by cachi2 for hermetic dependency management
  - Cypress testing framework requires network access to download.cypress.io
  - Custom yarn artifacts and dockerfile modifications conflict with hermetic requirements
  

  nmstate-console-plugin builds successfully in hermetic mode without requiring network access during build process. Component should use npm package manager and disable Cypress binary
  downloads via CYPRESS_INSTALL_BINARY=0 environment variable.
  

  Root cause: Component uses yarn package manager which is incompatible with cachi2 hermetic builds, plus Cypress test framework downloads binaries during build.

  Solution requires:
  1. Upstream yarn→npm migration (similar to networking-console-plugin)
  2. Set CYPRESS_INSTALL_BINARY=0 to disable test framework downloads
  3. Remove yarn-specific artifacts and dockerfile modifications
  4. Update ocp-build-data package manager configuration

  Reference upstream work: https://github.com/openshift/nmstate-console-plugin/pull/169
  Similar successful conversion: networking-console-plugin PRs #347 and #331

  Tracking: ART-14616 (parent task with technical analysis)