Per fox: ASCII-only stripping leaves CJK full-width forms behind, so
"who is X？" and "who is X" still produce different cache_keys
despite being the same question. Expanded strip set:
ASCII: . ? ! , ; :
CJK: ？(U+FF1F) ！(U+FF01) 。(U+3002) 、(U+3001)
ellipsis: …(U+2026)
Pairs deliberately stay out of the set:
" ' ) ] }
Stripping one side of a pair breaks balance. `who said "X"?` after
stripping `?` is balanced; further stripping `"` would yield
`who said "X` — different equivalence class than the original. And
apostrophes carry meaning: `X's` is a different question from `X`.
Lifted the strip set into a module constant `_QUESTION_TRAILING_STRIP`
so anyone considering an addition has a documented anchor.
Tests: 11 new in tests/test_keys.py — 6 CJK / ellipsis equivalences,
5 pair-preservation cases (double-quote, single-quote, paren, bracket,
brace). 24 keys tests + 297 default suite, all passing.
Whitepaper sibling change in ~/git/unfirehose-nextjs-logger/whitepaper/
merkle-providence-reverse-rag-whitepaper.rst — expanded the
question_hash bullet to document the equivalence class. Not committed
in this commit (different repo).
russell@unturf.com
6291f7c190