a70ab40520 was committed from a working-tree boot.mjs that was behind HEAD (a foreign in-progress easel merge held a stale copy in the shared index), so it silently undid: the Easel draft-code redirect (#~<code>), the nopaint-navigation session seed for acSTARTING_PIECE, and the login-survives-expired-session fix (acLOGIN installed before the restore flow, session-aesthetic cleared on explicit login). This puts boot.mjs back to b5ec0a4e33 plus only the two empty-boot guard lines. Never deployed in between.