hl-valdemar
9838b253ee
Reuse canonical matches for optional presence and exact by-value payload captures across checking, lowering and compile-time selection. Snapshot the optional-match flag before selector construction: AST additions can reallocate storage and invalidate the borrowed tree until refresh. Verified 268 bootstrap tests and 908 interpreter/native programs at -O0 and -O2, plus native allocator, LLVM and CLI checks.