feat(auth): implement Facebook identity binding on external entry

src/stores/auth/auth-actors.ts

@@ -239,6 +239,24 @@ export const guestLoginActor = fromPromise<LoginStatus, void>(async () => {
   return "guest" as LoginStatus;
 });
 
+export interface BindFacebookIdentityInput {
+  asid?: string;
+  psid?: string;
+}
+
+export const bindFacebookIdentityActor = fromPromise<
+  void,
+  BindFacebookIdentityInput
+>(async ({ input }) => {
+  const result = await getAuthRepository().bindFacebookIdentity(input);
+  if (Result.isErr(result)) {
+    log.warn(
+      { err: result.error.message },
+      "[auth-machine] bindFacebookIdentityActor failed",
+    );
+  }
+});
+
 // ========== 启动 / 恢复时检查登录态 actor（只查不创） ==========
 
 export const checkAuthStatusActor = fromPromise<LoginStatus, void>(async () => {
@@ -259,17 +277,6 @@ export const checkAuthStatusActor = fromPromise<LoginStatus, void>(async () => {
         ? providerR.data
         : ("email" as LoginStatus);
 
-    const bindResult = await authRepo.bindFacebookIdentity({
-      asid: asid ?? undefined,
-      psid: psid ?? undefined,
-    });
-    if (Result.isErr(bindResult)) {
-      log.warn(
-        { err: bindResult.error.message },
-        "[auth-machine] checkAuthStatusActor: bindFacebookIdentity failed",
-      );
-    }
-
     return provider;
   }