What this is
- A strict logged-out control test showing that /watch playback works in the current Firefox Private session.

Observed
- The /watch page loads and video playback progresses (screenshots captured ~18s apart are NOT identical).
- In this run, playback is in a pre-roll ad (Allstate), which still demonstrates that the player runs and time advances.

Why this matters
- It helps classify other failures (bot-wall, Error 153) as endpoint/video-specific issues rather than a fully-broken environment.

Environment
- Browser: Mozilla Firefox (Private Browsing)
- Signed out
- Capture: full desktop OS-level PNG screenshots