Devcontainer quality

Workflow runs for Devcontainer quality

• ci: add job timeouts, devcontainer prebuild caching, pin runners to ubuntu-24.04

  completed successfully:
  Devcontainer quality#3:Pull request#79openedbymyclaudecodeagent[bot]Bot
  ci/pipeline-hygiene

  Aug 8, 20261m 8s
  More actions for workflow run 3

• Devcontainer quality

  failed at startup:
  Devcontainer quality#2:synchronizebymyclaudecodeagent[bot]Bot
  ci/devcontainer-quality-check

  Aug 8, 2026Startup failure
  More actions for workflow run 2

• Devcontainer quality

  failed at startup:
  Devcontainer quality#1:synchronizebyaseguragonzalez
  ci/devcontainer-quality-check

  Aug 8, 2026Startup failure
  More actions for workflow run 1