feat: 用户视角 — 按用户聚合 LD 板使用信息

- 新增 DomainDetail 数据模型存储逐域归属 (Owner/PID/T-Pod/Design)
- 解析详细版 test_server 输出 (Logic drawer X has N domains 格式)
- 新增 /users 页面 + /api/users API 按用户聚合 LD 板
- 修复邮件配置保存时中文逗号收件人分割问题
- 修复邮件发送时 ASCII 编码错误 (收件人含中文逗号)

mailer.py

@@ -124,10 +124,21 @@ def save_config(data: dict) -> int:
         raise RuntimeError("EmailConfig 模型不可用")
 
     to_addrs = data.get("to_addrs")
+    # 统一处理：支持中英文逗号、分号分隔，自动规范化为英文逗号分隔
     if isinstance(to_addrs, list):
-        to_addrs_str = ",".join(str(x) for x in to_addrs if x)
+        # 每个元素内部也可能含中英文逗号，全部拆开
+        parts = []
+        for item in to_addrs:
+            s = str(item).replace("\uff0c", ",").replace("\u3001", ",").replace(";", ",")
+            for p in s.split(","):
+                p = p.strip()
+                if p:
+                    parts.append(p)
+        to_addrs_str = ",".join(parts)
     else:
-        to_addrs_str = str(to_addrs or "")
+        s = str(to_addrs or "").replace("\uff0c", ",").replace("\u3001", ",").replace(";", ",")
+        parts = [p.strip() for p in s.split(",") if p.strip()]
+        to_addrs_str = ",".join(parts)
 
     save_fields = {
         "enabled": str(data.get("enabled", False)).lower(),