v1.7.3 — player clearance without the dead "lip"

Fix

Follow-up to v1.7.2. That release padded .page.streaming, but on the home/library view the page wrapper is overflow-hidden + h-full and the real scroll container is #bookshelf (item pages scroll on #item-page-wrapper). Padding the wrapper only shrank the inner scroller and left a permanent empty band — the "lip".

The 140px bottom clearance now lives on the actual scroll containers, only while the player is open. Because it's inside the scroll flow, it's only ever seen once you scroll to the very bottom — no persistent gap.

File versions: core.js v3.29.3, enhancements.js v6.64.2.