fix(extract): 增强 JSON 解析容错 + 扩充容器键白名单 + 单操作兜底 + 诊断改善

- extractJSON: 新增 trailing comma 容错和截断 JSON 自动闭合修复
- extractOperationsPayload: 容器键白名单从 5 扩充到 13，新增智能探测和单操作对象包装
- 错误日志现在会输出 result 的类型、键名和预览，方便排查

llm/llm.js

@@ -1976,5 +1976,51 @@ function extractJSON(text) {
     }
   }
 
+  // 4. trailing comma 容错 (常见 LLM 错误: {"a": 1,} 或 [1, 2,])
+  if (startIdx >= 0) {
+    const lastEnd = trimmed.lastIndexOf(endChar);
+    if (lastEnd > startIdx) {
+      const candidate = trimmed
+        .slice(startIdx, lastEnd + 1)
+        .replace(/,\s*([}\]])/g, "$1");
+      try {
+        return JSON.parse(candidate);
+      } catch {
+        /* continue */
+      }
+    }
+  }
+
+  // 5. 截断 JSON 修复: 尝试补全不匹配的括号
+  if (startIdx >= 0) {
+    let candidate = trimmed.slice(startIdx);
+    // 先清理 trailing comma
+    candidate = candidate.replace(/,\s*$/g, "");
+
+    const opens = { "{": 0, "[": 0 };
+    const closes = { "}": "{", "]": "[" };
+    for (const ch of candidate) {
+      if (ch in opens) opens[ch]++;
+      if (ch in closes && opens[closes[ch]] > 0) opens[closes[ch]]--;
+    }
+
+    if (opens["["] > 0 || opens["{"] > 0) {
+      // 去除末尾不完整的 key-value 残片（如 "key": "未完...）
+      candidate = candidate.replace(
+        /,?\s*"[^"]*"?\s*:\s*"?[^"}\]]*$/,
+        "",
+      );
+      candidate = candidate.replace(/,\s*$/g, "");
+      for (let i = 0; i < opens["["]; i++) candidate += "]";
+      for (let i = 0; i < opens["{"]; i++) candidate += "}";
+      candidate = candidate.replace(/,\s*([}\]])/g, "$1");
+      try {
+        return JSON.parse(candidate);
+      } catch {
+        /* continue */
+      }
+    }
+  }
+
   return null;
 }

maintenance/extractor.js

@@ -84,6 +84,14 @@ const EXTRACTION_RESULT_CONTAINER_KEYS = [
   "items",
   "entries",
   "memories",
+  "results",
+  "data",
+  "memory_operations",
+  "actions",
+  "output",
+  "extracted",
+  "extractions",
+  "memory_nodes",
 ];
 
 const EXTRACTION_OPERATION_META_KEYS = new Set([
@@ -116,7 +124,22 @@ function isPlainObject(value) {
   return Boolean(value) && typeof value === "object" && !Array.isArray(value);
 }
 
+/**
+ * 判断一个对象是否像一个 extraction 操作
+ * (包含 action/op/operation/type 中的至少一个)
+ */
+function looksLikeSingleOperation(obj) {
+  if (!isPlainObject(obj)) return false;
+  return (
+    typeof obj.action === "string" ||
+    typeof obj.op === "string" ||
+    typeof obj.operation === "string" ||
+    typeof obj.type === "string"
+  );
+}
+
 function extractOperationsPayload(result) {
+  // 直接是数组 → 直接返回
   if (Array.isArray(result)) {
     return result;
   }
@@ -124,12 +147,35 @@ function extractOperationsPayload(result) {
     return null;
   }
 
+  // 1. 优先匹配已知容器键
   for (const key of EXTRACTION_RESULT_CONTAINER_KEYS) {
     if (Array.isArray(result[key])) {
       return result[key];
     }
   }
 
+  // 2. 智能探测：扫描对象中第一个值为非空数组且元素为对象的键
+  for (const [key, value] of Object.entries(result)) {
+    if (
+      Array.isArray(value) &&
+      value.length > 0 &&
+      isPlainObject(value[0])
+    ) {
+      debugLog(
+        `[ST-BME] 自动探测到非标准容器键: "${key}" (${value.length} 项)`,
+      );
+      return value;
+    }
+  }
+
+  // 3. 单个操作对象兜底：如果整个结果看起来像一条操作，包装成数组
+  if (looksLikeSingleOperation(result)) {
+    debugLog(
+      "[ST-BME] LLM 返回了单个操作对象，自动包装为数组",
+    );
+    return [result];
+  }
+
   return null;
 }
 
@@ -455,7 +501,23 @@ export async function extractMemories({
   const normalizedResult = normalizeExtractionResultPayload(result, schema);
 
   if (!normalizedResult || !Array.isArray(normalizedResult.operations)) {
-    console.warn("[ST-BME] 提取 LLM 未返回有效操作");
+    const diagType = result === null
+      ? "null"
+      : Array.isArray(result)
+        ? `array(len=${result.length})`
+        : typeof result;
+    const diagKeys = isPlainObject(result)
+      ? Object.keys(result).slice(0, 10).join(", ")
+      : "";
+    const diagPreview = typeof result === "string"
+      ? result.slice(0, 120)
+      : "";
+    console.warn(
+      `[ST-BME] 提取 LLM 未返回有效操作 ` +
+        `[type=${diagType}]` +
+        (diagKeys ? ` [keys=${diagKeys}]` : "") +
+        (diagPreview ? ` [preview=${diagPreview}]` : ""),
+    );
     return {
       success: false,
       error: "提取 LLM 未返回有效操作",