refactor：调整步骤状态更新逻辑以使用get_current_step函数以简化代码

Author: Rasic2

agents/matmaster_agent/utils/event_utils.py

@@ -27,13 +27,20 @@
     ContentLimitLlmAgent,
 )
 from agents.matmaster_agent.flow_agents.model import PlanStepStatusEnum
+from agents.matmaster_agent.flow_agents.step_utils import get_current_step
 from agents.matmaster_agent.flow_agents.style import separate_card
 from agents.matmaster_agent.llm_config import DEFAULT_MODEL, MatMasterLlmConfig
 from agents.matmaster_agent.locales import i18n
 from agents.matmaster_agent.model import RenderTypeEnum
 from agents.matmaster_agent.prompt import GLOBAL_INSTRUCTION
 from agents.matmaster_agent.services.session_files import insert_session_files
-from agents.matmaster_agent.state import CURRENT_STEP, ERROR_DETAIL, PLAN, UPLOAD_FILE
+from agents.matmaster_agent.state import (
+    CURRENT_STEP,
+    CURRENT_STEP_STATUS,
+    ERROR_DETAIL,
+    PLAN,
+    UPLOAD_FILE,
+)
 from agents.matmaster_agent.style import (
     no_found_structure_card,
     photon_consume_free_card,
@@ -474,11 +481,9 @@ def handle_tool_error(ctx, author, error_message, error_type):
     )
 
     # 更新 plan 状态为失败
-    update_plan = copy.deepcopy(ctx.session.state['plan'])
-    update_plan['steps'][ctx.session.state['plan_index']][
-        'status'
-    ] = PlanStepStatusEnum.FAILED
-    yield update_state_event(ctx, state_delta={'plan': update_plan})
+    post_execution_step = copy.deepcopy(get_current_step(ctx))
+    post_execution_step[CURRENT_STEP_STATUS] = PlanStepStatusEnum.FAILED
+    yield update_state_event(ctx, state_delta={CURRENT_STEP: post_execution_step})
 
     # 抛出相应的异常
     raise RuntimeError(f'Tool Execution Error: {error_type}')