同上

mengsan/ui/hand/diagnostics.js

@@ -0,0 +1,17 @@
+const lines = [];
+let pendingWrite = Promise.resolve();
+
+export function createHandDiagnostics(game, sessionId) {
+  return (message, error) => {
+    const line = `${new Date().toISOString()} [${sessionId}] ${message}` +
+      (error ? ` ${error.message || error}` : "");
+    console[error ? "warn" : "info"](`梦三手牌 UI：${line}`);
+    lines.push(line);
+    if (lines.length > 100) lines.shift();
+    if (typeof game?.writeFile !== "function") return;
+    const contents = lines.join("\n") + "\n";
+    pendingWrite = pendingWrite.then(() => game.promises.writeFile(
+      contents, "extension/术樱包/mengsan/logs", "log.txt"
+    )).catch(cause => console.warn("梦三手牌 UI 日志写入失败", cause));
+  };
+}