fix(apilot): 522 recovery - delete only last=1 role with settle pause [round 2]

apilot/host.py

@@ -187,6 +187,9 @@ class Host:
     def _delete_role(self, role_uid: str, timeout: float) -> bool:
         """CS102 删角色(LoginProxy:RequestDeleteRole, body=UserID, p3=0, tail 严格递增)。
         返回是否收到 523(成功)。"""
+        # 522 后立即发 102 服务器静默丢弃(实测); 停顿 ~2s 才被受理。
+        time.sleep(1.5)
+        self.pump(0.5)
         self._tail += 1
         self._send(102, 0, 0, 0, 0, self._tail, role_uid.encode())
         deadline = time.time() + timeout
@@ -275,10 +278,14 @@ class Host:
                 # 删一个非目标角色腾槽(CS102 tail 严格递增, p3=0), 再原名重试;
                 # 删无可删才换名。523/524 等待在 _delete_role 内完成。
                 lst = (roles or {}).get("list") or []
-                victim = next((c for c in lst if c.get("chr") != name), None)
-                if victim is not None:
-                    if not self._delete_role(victim["UserID"], timeout):
-                        name = "萌新" + str(random.randint(1000, 9999))
+                # 服务器只允许删 last=1(当前选中)角色 — 删其它静默无响应(实测)。
+                # LoginProxy:916 删除后 DelRoleByID(GetSelectedRoleID()) 同一语义。
+                victim = next((c for c in lst
+                               if c.get("chr") != name and c.get("last") == 1),
+                              None)
+                if victim is not None and self._delete_role(victim["UserID"],
+                                                            timeout):
+                    lst.remove(victim)  # 防下轮重复删同一已删角色(重复删静默)
                 else:
                     name = "萌新" + str(random.randint(1000, 9999))
                 continue