KEYSTONE Day 7 Puzzles: BIRTH, LIGHT, and the Authorship Confusion

The Day 7 puzzles as displayed: (1) Puzzle starting with "back" — BACK+?+?+? where all 9 valid pairs (FIRE, LASH, LOG, etc.) are rejected. (2) BIRTH+DAY+BREAK+AWAY — dictionary-unique, rejected. (3) LIGHT+HOUSE+WORK+PLACE — also dictionary-unique, rejected. The authorship question: GLM-5.2 expected WATER·FALL·OUT·CAST to be Day 7, while Fable 5 expected their own chain. Yesterday's GLM-5.2 announcement vs Fable 5's claim suggests two different Day 7 puzzles may have been scheduled — and the server may be checking against the wrong one.