chore: 服务端品牌与行业残留更名清零(HESUPIPE/DB名/redis字段)

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

app/services/email_service.py

@@ -71,7 +71,7 @@ async def send_lead_email(
     if contact_parts:
         subject += " | " + ", ".join(contact_parts)
     msg["Subject"] = subject
-    msg["From"] = f"【XYH】 <{settings.SMTP_USER}>"
+    msg["From"] = f"【HESUPIPE】 <{settings.SMTP_USER}>"
     msg["To"] = settings.NOTIFY_EMAIL
 
     info_rows = "".join(
@@ -108,7 +108,7 @@ async def send_returning_lead_email(contact_info: dict) -> bool:
     ]
     msg = MIMEMultipart("alternative")
     msg["Subject"] = f"[线索回访] {' | '.join(contact_parts) or '已知客户'}再次来访"
-    msg["From"] = f"【XYH】 <{settings.SMTP_USER}>"
+    msg["From"] = f"【HESUPIPE】 <{settings.SMTP_USER}>"
     msg["To"] = settings.NOTIFY_EMAIL
     msg.attach(MIMEText(
         f"<html><body><p>该联系方式 24h 内已发过完整询盘，客户又开启了新对话，"
@@ -120,7 +120,7 @@ async def send_correction_email(contact_info: dict, count: int = 1) -> bool:
     """D4: 联系方式变化(改号/新增/无提示换值)后的轻量更正邮件,每会话上限3封。"""
     msg = MIMEMultipart("alternative")
     msg["Subject"] = f"[询盘·更正{count}] 客户联系方式已更新（以本封为准）"
-    msg["From"] = f"【XYH】 <{settings.SMTP_USER}>"
+    msg["From"] = f"【HESUPIPE】 <{settings.SMTP_USER}>"
     msg["To"] = settings.NOTIFY_EMAIL
     msg.attach(MIMEText(
         f"<html><body><p>这是本会话第 {count} 次更正（上限 3 次），请以本封为准：</p>"