fix: normalize Pro action targets and bound no-progress recovery

artemis/agents/operator/operator.py

@@ -19,8 +19,10 @@ from uuid import uuid4
 from langchain_core.messages import SystemMessage, ToolMessage
 from langchain_core.tools import BaseTool
 
-from artemis.core.tool_failure import is_tool_failure
+from artemis.agents.validator.tool_declarations import normalize_coordinate_target
+from artemis.config.settings import settings
 from artemis.context import ArtemisContext
+from artemis.core.tool_failure import is_tool_failure
 from artemis.data_engine.trace import (
     TraceSpan,
     trace,
@@ -57,6 +59,11 @@ from artemis.utils.visualization import format_minimal_list_with_elements
 
 logger = get_logger(__name__)
 
+
+class OperatorNoProgressError(RuntimeError):
+    """The model repeatedly returned no usable tool call; stop without device actions."""
+
+
 DEFERRING_TOOLS = {
     "ask_diagnoser",
     "video_analyzer",
@@ -485,6 +492,8 @@ class OperatorNode:
         native_thoughts = []
         tool_limit_exceeded = False
         plan_gate_bounced = False
+        no_progress_attempts = 0
+        no_progress_limit = settings.ARTEMIS_OPERATOR_MAX_NO_PROGRESS_ATTEMPTS
 
         for iteration in range(max_iterations):
             if iteration == max_iterations - 1:
@@ -568,8 +577,27 @@ class OperatorNode:
                     logger.error(f"Failed to parse function_call fallback: {e}")
 
             if not response.tool_calls:
-                logger.warning("LLM stopped without calling any tool. Encouraging action.")
-                break
+                no_progress_attempts += 1
+                if no_progress_attempts >= no_progress_limit:
+                    raise OperatorNoProgressError(
+                        f"模型连续 {no_progress_attempts} 次未提供可执行的工具调用，"
+                        "已停止任务以避免空转；未执行新的设备动作。"
+                    )
+                logger.warning("LLM returned no tool call; requesting a concrete tool call.")
+                current_messages.append(response)
+                current_messages.append(
+                    SystemMessage(
+                        content=(
+                            "No tool call was returned, so no device action occurred. "
+                            "Use the available tool interface now, not a prose promise or JSON "
+                            "inside text. Use an index from the current element list or "
+                            "normalized coordinates with target_description. If blocked, "
+                            "use an observation/diagnostic tool; do not invent a click or "
+                            "claim success. This recovery has a limited retry budget."
+                        )
+                    )
+                )
+                continue
 
             current_messages.append(response)
 
@@ -840,9 +868,20 @@ class OperatorNode:
                 break
 
             if validation_errors:
+                no_progress_attempts += 1
+                if no_progress_attempts >= no_progress_limit:
+                    raise OperatorNoProgressError(
+                        f"模型连续 {no_progress_attempts} 次未提供可执行的工具调用，"
+                        "工具参数校验仍失败；已停止任务，未执行被拒绝的设备动作。"
+                    )
                 logger.warning("Some action calls failed validation. Feeding back to LLM.")
                 continue
+            no_progress_attempts = 0
         else:
+            if no_progress_attempts:
+                raise OperatorNoProgressError(
+                    "模型在本轮工具调用预算内未恢复有效调用，已停止任务以避免空转。"
+                )
             tool_limit_exceeded = True
 
         raw_thinking = "\n".join(raw_thoughts) if raw_thoughts else None
@@ -1122,6 +1161,9 @@ class OperatorNode:
             straight from the indexed list); a coordinate pair carries only the
             model's own ``target_description``. The two never mix.
             """
+            target = normalize_coordinate_target(target)
+            if isinstance(target, bool):
+                return None, "Error: Boolean values are not valid target indices."
             if isinstance(target, (int, float)):
                 try:
                     target_int = int(target)