chore: 基线提交（重构前快照）

重构前保存现有 apps/ 结构基线，供后续各阶段回滚。

Co-Authored-By: Claude <noreply@anthropic.com>

config/email.py

@@ -0,0 +1,20 @@
+import os
+
+# 邮寄者
+MAIL_MAILER = os.getenv('MAIL_MAILER', 'smtp')
+# 邮件服务
+MAIL_SERVER = os.getenv('MAIL_SERVER', 'smtp.163.com')
+# 邮件端口
+MAIL_PORT = os.getenv('MAIL_PORT', 465)
+# 邮件SSL证书
+MAIL_USE_SSL = (os.getenv('MAIL_USE_SSL', 'True') == 'True')
+# 授权邮箱用户名
+MAIL_USERNAME = os.getenv('MAIL_USERNAME', '')
+# 授权邮箱授权码
+MAIL_PASSWORD = os.getenv('MAIL_PASSWORD', '')
+# 邮件加密串
+MAIL_ENCRYPTION = os.getenv('MAIL_ENCRYPTION', '')
+# 邮件发件人名称
+MAIL_FROM_NAME = os.getenv('MAIL_FROM_NAME', '')
+# 邮件发件人地址
+MAIL_FROM_ADDRESS = os.getenv('MAIL_FROM_ADDRESS', '')