Function merge_deep_into

crates/opencode-provider/src/transform.rs:171–186

Deep-merge `source` into `target`. For nested JSON objects, recurse; otherwise overwrite.

(
    target: &mut HashMap<String, serde_json::Value>,
    source: &HashMap<String, serde_json::Value>,
)

/// Deep-merge `source` into `target`. For nested JSON objects, recurse; otherwise overwrite.
fn merge_deep_into(
    target: &mut HashMap<String, serde_json::Value>,
    source: &HashMap<String, serde_json::Value>,
) {
    for (k, v) in source {
        if let Some(existing) = target.get_mut(k) {
            if let (Some(existing_obj), Some(new_obj)) = (existing.as_object_mut(), v.as_object()) {
                for (nk, nv) in new_obj {
                    existing_obj.insert(nk.clone(), nv.clone());
                }
                continue;
            }
        }
        target.insert(k.clone(), v.clone());
    }
}

// ---------------------------------------------------------------------------
// normalize_messages_for_caching