From 66387c42100ef8419a664307d0fbd8de9b07aa6e Mon Sep 17 00:00:00 2001
From: ymq <ymq@opencomputing.net>
Date: Tue, 15 Sep 2026 17:56:41 +0800
Subject: [PATCH] =?UTF-8?q?fix(agent):=20=E6=96=87=E6=9C=AC=E5=85=9C?=
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pbls M1a第四轮实测:角色LLM在长上下文里输出连续多行裸{"action":"tool_call",...}(无```围栏),整体json.loads失败+围栏扫描无命中→兜底把tool_call文本当result deliver→交付件content是JSON文本、files_json只剩快照,QC必退且退回理由失真(实际代码/git提交都真实落地了)。修:_parse_agent_action加raw_decode逐段扫描取第一个动作对象。本地单测6/6(多对象/单deliver/纯文本/围栏优先/坏前缀跳过/DSML不回归)
---
 pipeline_service/agent_loop.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/pipeline_service/agent_loop.py b/pipeline_service/agent_loop.py
index 69cc10e..fd8bc37 100644
--- a/pipeline_service/agent_loop.py
+++ b/pipeline_service/agent_loop.py
@@ -2032,6 +2032,28 @@ def _parse_agent_action(raw):
         if isinstance(d, dict) and 'tool' in d:
             return {"action": "tool_call", "tool": d.get("tool", ""), "params": d.get("params") or {}}
 
+    # 裸 JSON 动作对象扫描（2026-09-15 pbls M1a 实测）：LLM 连续输出多个无围栏的
+    # {"action":"tool_call",...} 对象（一行一个）——整体 json.loads 失败（多对象拼接）、
+    # 围栏扫描无命中 → 兜底把 tool_call 文本当交付件正文 deliver → 交付件 content
+    # 就是 JSON 文本、files_json 只有快照文件，QC 必退且退回理由失真。
+    # raw_decode 逐个扫描，取第一个可解析的动作对象。
+    _dec = json.JSONDecoder()
+    _idx = 0
+    while True:
+        _b = raw.find('{', _idx)
+        if _b < 0:
+            break
+        try:
+            _d, _end = _dec.raw_decode(raw[_b:])
+        except (json.JSONDecodeError, ValueError):
+            _idx = _b + 1
+            continue
+        if isinstance(_d, dict) and 'action' in _d:
+            return _d
+        if isinstance(_d, dict) and 'tool' in _d:
+            return {"action": "tool_call", "tool": _d.get("tool", ""), "params": _d.get("params") or {}}
+        _idx = _b + max(_end, 1)
+
     return {"action": "deliver", "result": raw}