openPMD SetupMeshComponent header declaration does not match definition

# openPMD `SetupMeshComponent` header declaration does not match definition **Severity:** Low **File:** `src/io/openPMD.hpp:30` vs `src/io/openPMD.cpp:57` ## Explanation The header declares: ```cpp void SetupMeshComponent(openPMD::Mesh &mesh, int /*meshLevel*/, const std::string &comp_name, amrex::Geometry &full_geom); ``` (4 parameters), but the `.cpp` defines: ```cpp void SetupMeshComponent(openPMD::Mesh &mesh, amrex::Geometry &full_geom) { ... } ``` (2 parameters). These are two different functions. The 4-arg version is declared but never defined; any caller that includes the header and tries to use `SetupMeshComponent` will hit a linker error (undefined reference) or a compile error (no matching 2-arg overload visible). The sole call site in `openPMD.cpp:117` uses the 2-arg form and works only because the `.cpp` doesn't include the `.hpp`. The `int meshLevel` and `comp_name` parameters appear to have been removed from the implementation without updating the header. ## Proposed patch In `openPMD.hpp:30`: ```cpp void SetupMeshComponent(openPMD::Mesh &mesh, amrex::Geometry &full_geom); ```