fix: use process uptime and host-service stats fallback

routes/admin_api/operations_api.py

@@ -211,11 +211,24 @@ def get_server_info_api():
     disk_used = f"{disk.used / (1024**3):.1f}GB"
     disk_percent = disk.percent
 
-    boot_time = datetime.fromtimestamp(psutil.boot_time(), tz=BEIJING_TZ)
-    uptime_delta = get_beijing_now() - boot_time
-    days = uptime_delta.days
-    hours = uptime_delta.seconds // 3600
-    uptime = f"{days}天{hours}小时"
+    try:
+        process = psutil.Process()
+        process_start_at = datetime.fromtimestamp(process.create_time(), tz=BEIJING_TZ)
+        uptime_delta = get_beijing_now() - process_start_at
+    except Exception:
+        boot_time = datetime.fromtimestamp(psutil.boot_time(), tz=BEIJING_TZ)
+        uptime_delta = get_beijing_now() - boot_time
+
+    uptime_seconds = max(0, int(uptime_delta.total_seconds()))
+    days = uptime_seconds // 86400
+    hours = (uptime_seconds % 86400) // 3600
+    minutes = (uptime_seconds % 3600) // 60
+    if days > 0:
+        uptime = f"{days}天{hours}小时"
+    elif hours > 0:
+        uptime = f"{hours}小时{minutes}分钟"
+    else:
+        uptime = f"{minutes}分钟"
 
     return jsonify(
         {