oxicode-sdk ↔ oxios, 누가 누구를 감싸는가

// engine.rs:19
use oxicode_sdk::{CatalogConfig, FileModelCatalog, ModelCatalog, Oxicode, OxicodeBuilder};

// engine.rs:48–50 — OxiosEngine이 옵션 필드로 들고 있는 SDK 핸들
authorizer: Option<Arc<oxicode_sdk::Authorizer>>,
tracer: Option<Arc<oxicode_sdk::Tracer>>,
cost_tracker: Option<Arc<oxicode_sdk::CostTracker>>,

// engine.rs:314–316 — Provider 생성을 SDK에 위임
pub fn create_provider(&self, name: &str) -> Result<Arc<dyn oxicode_sdk::Provider>> {
    Ok(self.oxi.create_provider(name)?)
}

// agent_runtime.rs:31–33
use oxicode_sdk::observability::AuditTrail;
use oxicode_sdk::{Agent, AgentConfig, AgentEvent, CompactionEvent, CompactionStrategy};
use oxicode_sdk::{SearchCache, ToolExecutionMode, ToolRegistry};

// agent_runtime.rs:52 — 글로벌 회로차단기도 SDK 타입 그대로
use oxicode_sdk::{BreakerState, CircuitBreaker, DefaultCircuitBreaker};

// agent_runtime.rs:732–735 doc-comment, 원문 그대로
// "Uses engine.oxi().agent() (AgentBuilder) for full middleware,
//  observability, and security integration from oxicode-sdk 0.23.0."

// event_bus.rs:1–27
//! Event bus: inter-agent communication via oxicode_sdk::EventBus<KernelEvent>.
//! it reuses oxicode_sdk::EventBus<E>, a generic wrapper over tokio::sync::broadcast.
use oxicode_sdk::EventBus as SdkEventBus;

pub type EventBus = SdkEventBus<KernelEvent>;

// a2a_api.rs:10–38
message_bus: oxicode_sdk::MessageBus,
message_bus: oxicode_sdk::MessageBus::new(256),

pub fn message_bus(&self) -> &oxicode_sdk::MessageBus {
    &self.message_bus
}

pub fn subscribe(&self) -> tokio::sync::broadcast::Receiver<oxicode_sdk::InterAgentMessage> {
    self.message_bus.subscribe()
}

// credential.rs — load/save는 SDK 함수 호출, 언제·어디서 부를지는 oxios 정책
if let Ok(Some(token)) = oxicode_sdk::load_token(provider) { ... }
let token = oxicode_sdk::TokenBundle { ... };
if let Err(e) = oxicode_sdk::save_token(provider, &token) { ... }

// 255–256 — OAuthError::Json이면 레거시 마이그레이션 트리거 (RFC-014 Phase F)
fn is_legacy_auth_error(err: &oxicode_sdk::OAuthError) -> bool {
    matches!(err, oxicode_sdk::OAuthError::Json(_))
}

// 305–306 — 두 홈 디렉토리에 동기화
let store = oxicode_sdk::AuthStore { tokens: migrated };
oxicode_sdk::save_auth_store(&store)?;

// model_resolver.rs:23
use oxicode_sdk::{Model, Provider};

// engine.rs:11, 451–453
use oxicode_sdk::{Context, Message, ProviderEvent, UserMessage};

let model = oxicode_sdk::Model::new(id, id, oxicode_sdk::Api::OpenAiCompletions, "test", "");
let provider: Arc<dyn oxicode_sdk::Provider> =
    Arc::new(oxicode_sdk::OpenAiProvider::with_base_url_and_key(...));