Add WeCom machine name for multi-node push labels.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/notify/wecom.py

@@ -55,6 +55,18 @@ def wecom_webhook_url() -> str:
         return ""
 
 
+def wecom_machine_name() -> str:
+    """多机推送区分用的机器名（设置页 / WECOM_MACHINE_NAME）。"""
+    s = get_settings()
+    name = (getattr(s, "wecom_machine_name", None) or "").strip()
+    if name:
+        return name[:64]
+    try:
+        return (get_db().get_setting("wecom_machine_name", "") or "").strip()[:64]
+    except Exception:
+        return ""
+
+
 def venue_label() -> str | None:
     """实盘时返回「实盘·交易所」；SIM 不展示盘口标签。"""
     s = get_settings()
@@ -74,13 +86,21 @@ def venue_label() -> str | None:
 
 def build_markdown(*, tag: str, title: str, lines: list[str] | None = None) -> str:
     body = "\n".join(f"> {ln}" if not ln.startswith(">") else ln for ln in (lines or []))
+    machine = wecom_machine_name()
     venue = venue_label()
-    head = f"## 【{venue}】{title}" if venue else f"## {title}"
+    prefix_parts: list[str] = []
+    if machine:
+        prefix_parts.append(f"【{machine}】")
+    if venue:
+        prefix_parts.append(f"【{venue}】")
+    head = f"## {''.join(prefix_parts)}{title}"
     parts = [
         head,
         f"> **标识**: `{tag}`",
         f"> **时间**: {time.strftime('%Y-%m-%d %H:%M:%S')}",
     ]
+    if machine:
+        parts.append(f"> **机器**: {machine}")
     if body:
         parts.append("")
         parts.append(body)
@@ -216,7 +236,10 @@ def notify_fault(*, title: str, detail: str, dedupe_key: str | None = None) -> N
 
 def notify_test() -> tuple[bool, str]:
     venue = venue_label()
+    machine = wecom_machine_name()
     lines = ["企业微信通知已连通。"]
+    if machine:
+        lines.append(f"机器名称: **{machine}**")
     if venue:
         lines.append(f"当前盘口标签: **{venue}**")
     content = build_markdown(