fix: prevent timeout stalls and release 1.2.1

artemis/agents/flash/runner.py

@@ -1063,6 +1063,8 @@ class FlashRunner:
         current_xml_list = xml_list
         previous_turn: _TurnRecord | None = None
         pending_notices: list[str] = []
+        no_tool_attempts = 0
+        no_tool_limit = settings.ARTEMIS_FLASH_MAX_NO_PROGRESS_ATTEMPTS
 
         while limit is None or turns < limit:
             control = getattr(self.ctx, "task_control", None)
@@ -1198,11 +1200,24 @@ class FlashRunner:
                 if is_final:
                     final_report = {"status": "failed", "explanation": raw_text}
                     break
+                no_tool_attempts += 1
+                if no_tool_attempts >= no_tool_limit:
+                    final_report = {
+                        "status": "failed",
+                        "explanation": (
+                            f"模型连续 {no_tool_attempts} 次未调用工具，"
+                            "已停止任务以避免空转和重复计费；未执行新的设备动作。"
+                        ),
+                    }
+                    break
                 pending_notices.append(_NO_TOOL_CALL_NOTICE)
-                ledger.stage_turn(messages[turn_base:])
+                # Keep the observation and any injected user instruction, but
+                # do not feed the model its own unproductive prose on retry.
+                ledger.stage_turn(messages[turn_base:-1])
                 previous_turn = _TurnRecord()
                 continue
 
+            no_tool_attempts = 0
             # Process tool calls
             turn = _TurnRecord()
             (