Play now opens /recordings/play?clip=… in a window of its own: the video
on black, fitted to the window, with a fading overlay naming the camera
and the time. One window is reused for whichever clip is opened next, and
it stays an ordinary link so a blocked popup still opens a tab. The page
checks the session and resolves the clip inside the recordings folder.
Also add DOM cleanup to three test files that had none: renders piled up
in the document and tests read each other's markup, which is what made
the new test pass or fail depending on its position in the file.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
