As of 3.6, we should prevent users from launching theia workspaces from the dashboard.

Upstream:

• DONE mark eclipse theia images in quay deprecated (03/14) - https://quay.io/repository/eclipse/che-theia-endpoint-runtime-binary?tab=info
• DONE update che-release to not push theia images - https://github.com/eclipse-che/che-release/pull/72
• push a commit to the README & make che-theia repo readonly/archived
• remove refs to theia in che-dashboard / replace with che-code

See also Remove che-theia/latest editor from Che 7.63 #22040

• remove theia from plugin registry's che-editors.yaml file (both upstream and downstream fork)
  • remove upstream plugin registry code related to validating theia plugins (.theia)

Downstream:

• DONE update devspaces-dashboard to prevent using theia :: DONE, https://github.com/redhat-developer/devspaces-images/pull/408/files
• DONE mark devspaces theia images in quay deprecated :: DONE (03/14) - https://quay.io/repository/devspaces/theia-rhel8?tab=info
• DONE remove 3.6 jobs for theia: https://gitlab.cee.redhat.com/codeready-workspaces/crw-jenkins/-/merge_requests/1554 :: DONE
• DONE remove 2.15 jobs: https://gitlab.cee.redhat.com/codeready-workspaces/crw-jenkins/-/merge_requests/1554 :: DONE
• DONE remove theia from CSV :: DONE - https://main-jenkins-csb-crwqe.apps.ocp-c1.prod.psi.redhat.com/job/DS_CI/job/get-sources-rhpkg-container-build_3.x/2575/
• DONE update devspaces-images/devspaces-dashboard readme to remove mention to theia branding - https://github.com/redhat-developer/devspaces-images/pull/421 :: DONE
• DONE push a commit to the README & make devspaces-theia repo readonly/archived :: DONE
• DONE update RC tracker spreadsheet to drop image payload to 13 images :: DONE
• DONE after 3.5 is live: https://github.com/redhat-developer/devspaces/pull/915
• DONE update branding info links; remove theia GH tag from mapping for downstream JIRAs: https://github.com/redhat-developer/devspaces/pull/925
• DONE refactor eclipse/che-theia example to che-incubator/che-code example in both registries: https://github.com/redhat-developer/devspaces/pull/926
• DONE remove theia from tagRelease.sh script and manifest/get-3rd-party*.sh scripts - https://github.com/redhat-developer/devspaces/pull/927 https://github.com/redhat-developer/devspaces/pull/927
  • NOTE: if we need to do a 3.5.1, will need to revert this (or ensure that the 3.5 branch is used when generating manifests/tagging)

• remove downstream plugin registry code related to validating theia plugins (.theia) [depends on upstream]

Doc updates needed:

• https://www.eclipse.org/che/docs/stable/end-user-guide/selecting-a-workspace-ide/ and
• https://access.redhat.com/documentation/en-us/red_hat_openshift_dev_spaces/3.5/html-single/user_guide/index#selecting-an-ide

After 3.6 is live:

• deprecate theia images in comet (after 3.6 is live) – point them all to code-rhel8 as the replacement image