Hojun-Cho
5149d10618
Driver-side concatenation flattens module names, but enum member lookup keyed off the exact lhs ident — so `whence.CUR` worked while `os.whence.CUR` fell through to w6l with `undefined main.whence`. C side: fold TY_ENUM members in the post-cexpr cascade too, not just the early SK_TYPE shortcut. The recursive cexpr lands the inner N_DOT(os, whence) on the named enum type; the outer access then folds normally. Selfhost: cgdot now treats `N_IDENT.MEMBER` and `N_DOT.MEMBER` the same way, keying off the leaf name. enumlookup strips a trailing `.`-prefix from the lookup key. Adds e2e test 700: `use os; os.whence.CUR as i32 == 1`.