get_q_at_face Function

private function get_q_at_face(state, idx) result(q)

Return Q at grid cell idx with ghost-state fallback at boundaries.

Mirrors the boundary-aware averaging in the FVS face loop (lines ~124-141).

Arguments

Type	Intent	Optional	Attributes		Name
type(solver_state_t),	intent(in)			::	state	Solver state.
integer,	intent(in)			::	idx	Cell index (may lie outside [1, n_pt]).

Return Value real(kind=wp), (neq)