feat: 기능 추가 과정중

src/application/ports/auth-session-port.ts

@@ -0,0 +1,30 @@
+export type SessionState =
+  | "authenticated"
+  | "unauthenticated"
+  | "recovery-pending"
+  | "integration-failed";
+
+export type SessionGateway = Readonly<{
+  getState(): SessionState;
+  subscribe(listener: () => void): () => void;
+  beginSignIn(returnTo?: string): Promise<void>;
+  signOut(): Promise<void>;
+  recover(): Promise<"restored" | "no-session">;
+}>;
+
+export type CredentialRequestBinding = Readonly<{
+  origin: string;
+  method: string;
+  operationId: string;
+}>;
+
+export type CredentialPatch = Readonly<{
+  headers: Readonly<Record<string, string>>;
+}>;
+
+export type CredentialAttacher = Readonly<{
+  credentialPatch(binding: CredentialRequestBinding): Promise<CredentialPatch>;
+  onUnauthenticated(): void;
+}>;
+
+export type AuthSessionPort = SessionGateway & CredentialAttacher;