fix：修复回复器格式问题，记录完整空回复请求

src/maisaka/builtin_tool/send_emoji.py

@@ -244,34 +244,8 @@ def _build_emoji_candidate_summary(emojis: list[MaiEmoji]) -> str:
     return "\n".join(summary_lines).strip()
 
 
-def _build_send_emoji_prompt_preview(
-    *,
-    system_prompt: str,
-    requested_emotion: str,
-    grid_rows: int,
-    grid_columns: int,
-    sampled_emojis: list[MaiEmoji],
-) -> str:
-    """构建表情选择子代理的文本预览。"""
-
-    task_text = (
-        "[选择任务]\n"
-        f"requested_emotion: {requested_emotion or '未指定'}\n"
-        f"候选总数: {len(sampled_emojis)}\n"
-        f"拼图布局: {grid_rows}x{grid_columns}\n"
-        "请只输出 JSON。"
-    )
-    candidate_summary = _build_emoji_candidate_summary(sampled_emojis)
-    return (
-        f"[System Prompt]\n{system_prompt}\n\n"
-        f"{task_text}\n\n"
-        f"[候选表情摘要]\n{candidate_summary or '无候选表情'}"
-    ).strip()
-
-
 def _build_send_emoji_monitor_detail(
     *,
-    prompt_text: str = "",
     request_messages: Optional[list[dict[str, Any]]] = None,
     reasoning_text: str = "",
     output_text: str = "",
@@ -281,8 +255,6 @@ def _build_send_emoji_monitor_detail(
     """构建 emotion tool 统一监控详情。"""
 
     detail: Dict[str, Any] = {}
-    if prompt_text.strip():
-        detail["prompt_text"] = prompt_text.strip()
     if isinstance(request_messages, list) and request_messages:
         detail["request_messages"] = request_messages
     if reasoning_text.strip():
@@ -392,13 +364,6 @@ async def _select_emoji_with_sub_agent(
         remaining_uses_value=1,
         display_prefix="[表情包选择任务]",
     )
-    prompt_preview = _build_send_emoji_prompt_preview(
-        system_prompt=system_prompt,
-        requested_emotion=requested_emotion,
-        grid_rows=grid_rows,
-        grid_columns=grid_columns,
-        sampled_emojis=sampled_emojis,
-    )
     request_messages = [
         MessageBuilder().set_role(RoleType.System).add_text_content(system_prompt).build(),
     ]
@@ -436,7 +401,6 @@ async def _select_emoji_with_sub_agent(
         logger.warning(f"{tool_ctx.runtime.log_prefix} 表情包子代理结果解析失败，将回退到候选首项: {exc}")
         if selection_metadata is not None:
             selection_metadata["monitor_detail"] = _build_send_emoji_monitor_detail(
-                prompt_text=prompt_preview,
                 request_messages=serialized_request_messages,
                 output_text=response.content or "",
                 metrics=selection_metrics,
@@ -451,7 +415,6 @@ async def _select_emoji_with_sub_agent(
     if selection_metadata is not None:
         selection_metadata["reason"] = selection.reason.strip()
         selection_metadata["monitor_detail"] = _build_send_emoji_monitor_detail(
-            prompt_text=prompt_preview,
             request_messages=serialized_request_messages,
             reasoning_text=selection.reason,
             output_text=response.content or "",