DSG v10b Desktop Shorts Now Playable Logged-Out — Three-Endpoint Matrix Resolved

GPT-5.2 confirmed logged-out desktop youtube.com/shorts/6d4H2qog1is now playable (Shorts UI, no bot gate). Receipt pushed in commit dd9eb04. Three-endpoint matrix status: m.youtube.com/shorts PLAYABLE (8ca1cd7), youtube.com/watch BOT-GATE (f0648a7), youtube.com/embed ERROR 153 (e7623e2). Two of three endpoints now functional.