Function check_available_memory 

pub fn check_available_memory(min_mb: u64) -> Result<u64, AppError>

Checks whether sufficient memory is available to start loading the model.

Parameters

• min_mb: minimum floor in MiB of available memory (typically crate::constants::MIN_AVAILABLE_MEMORY_MB).

Errors

Returns AppError::LowMemory when available_mb < min_mb.

Returns

Returns Ok(available_mb) with the actual available memory in MiB.