更新

backend/models/models.py

@@ -1,5 +1,6 @@
 from datetime import datetime
 from sqlalchemy import Column, Integer, String, Boolean, DateTime, ForeignKey, Index, Text, UniqueConstraint
+from sqlalchemy.dialects.mysql import LONGTEXT
 from sqlalchemy.orm import relationship, validates
 from .database import Base
 from utils.log_limits import bound_error_log_content, bound_message_log_content
@@ -108,9 +109,9 @@ class Account(Base):
     phone = Column(String(20), nullable=True)                              # 绑定的手机号（可选）
     status = Column(String(50), default="offline")                         # offline, logging_in, online, error
     cookie_path = Column(String(255), nullable=True)                       # 存储 cookie/session 的路径
-    cookie_data = Column(Text, nullable=True)                              # Playwright storage_state JSON
+    cookie_data = Column(Text().with_variant(LONGTEXT(), "mysql"), nullable=True)  # Playwright storage_state JSON
     cookie_updated_at = Column(DateTime, nullable=True)                    # Cookie 最近更新时间
-    im_session_data = Column(Text, nullable=True)                          # IM 直连会话 (WS URL / device_id 等)
+    im_session_data = Column(Text().with_variant(LONGTEXT(), "mysql"), nullable=True)  # IM 直连会话 (WS URL / device_id 等)
     reply_delay_seconds = Column(Integer, default=0)                       # 账号回复排队间隔；0/NULL=继承系统默认
     reply_cooldown_seconds = Column(Integer, nullable=True)                # 自动回复冷却秒数；NULL=继承全局设置
     follow_welcome_enabled = Column(Boolean, default=False)                # 新粉丝关注后自动发送欢迎语
@@ -118,7 +119,7 @@ class Account(Base):
     user_agent = Column(Text, nullable=True)                             # 伪装设备头（User-Agent），空=默认
     egress_public_ip = Column(String(64), nullable=True)                 # 指定公网出口；空=自动选择
     egress_auto_attempts = Column(Integer, nullable=False, default=1)    # 发送失败时最多串行尝试的出口数
-    qr_code_base64 = Column(Text, nullable=True)                           # 当前登录二维码的 base64 字符串
+    qr_code_base64 = Column(Text().with_variant(LONGTEXT(), "mysql"), nullable=True)  # 当前登录二维码的 base64 字符串
     error_message = Column(Text, nullable=True)                            # 错误信息
     quota_disabled = Column(Boolean, default=False, index=True)              # 额度不足被停用
     created_at = Column(DateTime, default=datetime.utcnow)