The book, letter and plaque reader read a copy pushed once a frame, and opened on its lane. A bank or gossip open in the same frame lost to the book, and a listener read the last frame's page.
Reference: the open, the page and record answers and the turn each run in their handler. ITEM_TEXT_BEGIN (`0x4e349f`), READY and TRANSLATION are signalled there, and a waiting open finishes in its record's callback (`0x4e3280`, `0x5f59d0`).
Changed: the getters read live, each step runs in its handler, the events go on the lane. A nested close acts only on its read. Deviation: 1.12.1's reopen closes the book when an uncached page or a letter's author lands, and benilla keeps the book open.
Tests: a listener reads its packet's page, a same-frame bank open wins, and a book read before its template arrives opens when it lands.
Part of #2168.
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sam Sung
e23368a777