Function resolve_fixed_topology_ale_coupled 

pub fn resolve_fixed_topology_ale_coupled(
    request: &FixedTopologyAleCoupledRealizationRequest,
    requirements: FixedTopologyAleCoupledRealizationRequirements,
    capabilities: &RealizationCapabilities,
) -> Result<ResolvedFixedTopologyAleCoupledRealization, Diagnostic>

Resolve one explicit fixed-topology ALE request without fallback.

Errors

Returns EQ0807 for any identity, configuration, solver-capability, or cross-policy drift. The harmonic and monolithic solvers are independently admitted against their exact operator classes.