fix(felis): 编辑服务器时内存和 CPU 可各自单改互不清除，显示名可清空，内存显示真实上限

panel/src/i18n/resources/en-US/servers.json

@@ -178,7 +178,8 @@
   "luckperms_rcon_output": "RCON Console Output",
   "luckperms_clear_history": "Clear history",
   "edit_server_cpu": "CPU Limit",
-  "edit_server_cpu_placeholder": "e.g. 1, 2, 500m",
+  "edit_server_cpu_placeholder": "e.g. 1, 1.5, 500m — empty for no limit",
+  "edit_server_cpu_invalid": "Enter cores (1, 1.5) or millicores (500m), above zero.",
   "owned_filter_mine": "me",
   "edit_server_idle": "Idle auto-stop",
   "edit_server_idle_hint": "Stops the server after this long with nobody online, freeing memory and CPU. The next player to join wakes it.",