Free functions use snake_case, deviating from Google's PascalCase. This
matches Z3 (the wrapped API) and std::, so calls like z3::shl and
z3w::shl read consistently.
Class methods follow Google C++ Style: PascalCase for static factories
(e.g., Literal, From, TryFrom, True, False) and non-accessor
instance methods (e.g., ToLeBytes, ToBeBytes); snake_case for
accessors that return state directly (e.g., value(), expr()).
Type traits use snake_case with a _v helper (e.g., is_concrete,
is_symbolic_v), following std:: conventions rather than Google's
PascalCase.