Function amem_graph_add_node 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn amem_graph_add_node(
    graph: *mut c_void,
    event_type: u8,
    content: *const c_char,
    session_id: u32,
    confidence: f32,
) -> i64

Add a node. Returns the assigned node ID, or -1 on error.

Safety

The caller must ensure that all pointer arguments are valid and non-null (unless the function explicitly handles null pointers), and that any pointed-to data is valid for the expected type and lifetime.