分析LLM调用超时配置变化影响该请求

.openclaw/pmflow-routing-rules.json

@@ -1,6 +1,6 @@
 {
   "version": "v2",
-  "updated_at": "2026-03-11T00:00:00Z",
+  "updated_at": "2026-03-11T08:35:00Z",
   "source_of_truth": "openclaw",
   "description": "PMFlow 三引擎统一路由：所有主链路统一经 OpenClaw OpenAI-Compatible 网关。",
   "rules": [
@@ -10,7 +10,7 @@
       "priority": 320,
       "tier": "high",
       "provider": "openai",
-      "model": "MiniMax-M2.5",
+      "model": "GLM-5",
       "api_env": "OPENAI_API_KEY",
       "function_exact": "classify_intent_complex"
     },
@@ -32,12 +32,12 @@
       ]
     },
     {
-      "name": "engine_high_reasoning_minimax",
+      "name": "engine_high_reasoning_glm5",
       "enabled": true,
       "priority": 220,
       "tier": "high",
       "provider": "openai",
-      "model": "MiniMax-M2.5",
+      "model": "GLM-5",
       "api_env": "OPENAI_API_KEY",
       "match_any": [
         "adaptive_rag_answer",
@@ -62,7 +62,7 @@
       "priority": 200,
       "tier": "high",
       "provider": "openai",
-      "model": "MiniMax-M2.5",
+      "model": "GLM-5",
       "api_env": "OPENAI_API_KEY",
       "match_any": [
         "analyze_food_calories",
@@ -80,9 +80,9 @@
       "enabled": true,
       "priority": 50,
       "tier": "safety",
-      "provider": "openai",
+      "provider": "glm",
-      "model": "deepseek-chat",
+      "model": "GLM-4.7",
-      "api_env": "OPENAI_API_KEY",
+      "api_env": "GLM_API_KEY",
       "match_all": true
     }
   ]

CLAUDE.md

@@ -174,3 +174,4 @@ uvicorn app.main:app --reload --host 0.0.0.0 --port 8000
 - AI PMO 意图仲裁默认开启（`AI_PMO_INTENT_ARBITRATION_ENABLED=true`）：规则与 LLM 写操作冲突时按 `AI_PMO_INTENT_CONFLICT_POLICY=pending_manual` 强制进入人工确认，不直接自动执行
 - `project.create` 启用槽位完整性闸门：无法从指令提取有效项目名时标记 `slot_incomplete` 并进入人工确认
 - 数据库与核心写入链路统一使用北京时间（`Asia/Shanghai`）：PostgreSQL 会话时区、数据库默认时区与核心 `_utc_now*` 写入入口均已切换到北京时间
+- 后端与脚本层已清零 `datetime.utcnow()/timezone.utc`：统一使用 `backend/app/utils/timezone.py`（`now_cn_aware/now_cn_naive/CN_TZ`）管理时间语义

backend/alembic/versions/20260311_shift_all_timestamps_to_beijing.py

@@ -67,4 +67,5 @@ def downgrade() -> None:
     if not _is_postgresql():
         return
     _shift_all_timestamp_columns(hours=-8)
-    _set_database_timezone("UTC")
+    # 统一策略：即使降级历史数据，也保持数据库会话时区为北京时间。
+    _set_database_timezone("Asia/Shanghai")

backend/app/api/ai_steward.py

@@ -33,9 +33,9 @@ from ..services.ai_orchestration_run_service import AIOrchestrationRunService
 from ..services.openclaw_commander_service import OpenClawCommanderService
 from ..services.signal_source_orchestration_service import SignalSourceOrchestrationService
 from ..schemas.rag import RAGAskRequest
-from ..utils.timezone import now_cn_naive
 
 
+from ..utils.timezone import now_cn_aware, now_cn_naive
 router = APIRouter(prefix="/ai-steward", tags=["AI Steward"])
 
 
@@ -264,7 +264,7 @@ async def onboard_signal_source(
             {
                 "source": "pmflow_manual_signal_source_onboard",
                 "instruction": request.instruction[:2000],
-                "created_at": datetime.now(timezone.utc).isoformat(),
+                "created_at": now_cn_aware().isoformat(),
             },
             ensure_ascii=False,
         ),
@@ -1103,7 +1103,7 @@ async def get_ai_steward_stats(
         'active_blockers': active_blockers,
         'active_projects': active_projects,
         'hours_saved': hours_saved,
-        'last_updated': datetime.now(timezone.utc).isoformat()
+        'last_updated': now_cn_aware().isoformat()
     }
 
     return stats

backend/app/api/budget.py

@@ -20,6 +20,7 @@ from ..schemas.budget import (
 )
 from ..services.budget_enforcement_service import BudgetEnforcementService
 
+from ..utils.timezone import now_cn_naive
 router = APIRouter(prefix="/budget", tags=["budget"])
 
 
@@ -84,7 +85,7 @@ async def create_budget(
     db: AsyncSession = Depends(get_db),
 ):
     _ = current_user
-    now = datetime.utcnow()
+    now = now_cn_naive()
     period_start, period_end = _period_window(now, request.period)
     new_budget = Budget(
         tenant_id=tenant_id,

backend/app/api/notifications.py

@@ -15,6 +15,7 @@ from ..dependencies import get_current_user, get_tenant_id
 from ..models import Notification, User
 
 
+from ..utils.timezone import now_cn_naive
 router = APIRouter(prefix="/notifications", tags=["notifications"])
 
 
@@ -136,7 +137,7 @@ async def mark_notification_read(
 
     if not row.is_read:
         row.is_read = True
-        row.read_at = datetime.now(timezone.utc)
+        row.read_at = now_cn_naive()
         await db.commit()
 
     return success_response(data=_serialize_notification(row))
@@ -160,7 +161,7 @@ async def mark_all_notifications_read(
         )
     ).scalars().all()
 
-    now = datetime.now(timezone.utc)
+    now = now_cn_naive()
     for row in rows:
         row.is_read = True
         row.read_at = now

backend/app/api/skill_tags.py

@@ -17,6 +17,7 @@ from ..services.ai_pmo_kernel_service import AIPMOKernelService
 from ..services import skill_service
 from ..services.auth import has_any_role
 
+from ..utils.timezone import now_cn_naive
 router = APIRouter(tags=["skill-tags"])
 
 
@@ -141,7 +142,7 @@ async def update_skill_tag(
         tag.description = body.description
     if body.sort_order is not None:
         tag.sort_order = body.sort_order
-    tag.updated_at = datetime.utcnow()
+    tag.updated_at = now_cn_naive()
     await db.commit()
     await db.refresh(tag)
     return _to_tag_payload(tag)
@@ -285,7 +286,7 @@ async def update_user_skill(
         row.quality_score = body.quality_score
     if body.efficiency_score is not None:
         row.efficiency_score = body.efficiency_score
-    row.updated_at = datetime.utcnow()
+    row.updated_at = now_cn_naive()
     await db.commit()
     await AIPMOKernelService.invalidate_world_model_cache_for_user(db=db, tenant_id=tenant_id, user_id=user_id)
     return {"message": "Skill updated"}

backend/app/api/sstc.py

@@ -79,6 +79,7 @@ from ..dependencies import get_current_user, require_project_member_or_manager
 from ..utils.title import compact_title
 
 
+from ..utils.timezone import CN_TZ, now_cn_aware, now_cn_naive
 router = APIRouter(tags=["sstc"])
 _FEISHU_PLACEHOLDER_RE = re.compile(r"^飞书用户\(([^)]+)\)$")
 _SIGNAL_PREFIX_RE = re.compile(r"^\[(.*?)\]\s*:\s*")
@@ -866,7 +867,7 @@ async def _build_ai_first_charter_content(
         fallback_model = "同供应商低成本模型"
 
     source_refs = [f"signal:{sid}" for sid in signal_ids]
-    now_iso = datetime.now(timezone.utc).isoformat()
+    now_iso = now_cn_aware().isoformat()
     validations_m1 = _default_ai_validations("模块1：触发与目标")
     validations_m2 = _default_ai_validations("模块2：范围与对齐")
     validations_m3 = _default_ai_validations("模块3：模型与依赖")
@@ -1397,7 +1398,7 @@ def _normalize_review_content(raw: dict[str, Any] | None) -> dict[str, Any]:
         "what_went_well": [str(x).strip() for x in what_went_well if str(x).strip()],
         "root_causes": [str(x).strip() for x in root_causes if str(x).strip()],
         "improvements": normalized_improvements,
-        "last_updated_at": datetime.now(timezone.utc).isoformat(),
+        "last_updated_at": now_cn_aware().isoformat(),
     }
 
 
@@ -1806,7 +1807,7 @@ async def list_signals(
         }
         created_at_dt = s.created_at
         if created_at_dt is not None and created_at_dt.tzinfo is not None:
-            created_at_dt = created_at_dt.astimezone(timezone.utc).replace(tzinfo=None)
+            created_at_dt = created_at_dt.astimezone(CN_TZ).replace(tzinfo=None)
         if not _match_signal_filters(
             row=row,
             status_filter=normalized_status_filter,
@@ -1911,7 +1912,7 @@ async def upload_signal_attachment(
         "image_key": None,
         "media_id": None,
         "source": "manual_upload",
-        "occurred_at": datetime.now(timezone.utc).isoformat(),
+        "occurred_at": now_cn_aware().isoformat(),
         "download_url": _build_signal_attachment_download_url(pid, sid, attachment_id),
     }
 
@@ -2918,7 +2919,7 @@ async def get_task_board(
         risk_count = 0
         if (t.status or "").lower() == "blocked":
             risk_count += 1
-        if t.due_date and t.due_date < datetime.now(timezone.utc).replace(tzinfo=None) and (t.status or "").lower() not in DONE_STATUSES:
+        if t.due_date and t.due_date < now_cn_aware().replace(tzinfo=None) and (t.status or "").lower() not in DONE_STATUSES:
             risk_count += 1
         rows.append(
             {
@@ -2960,7 +2961,7 @@ async def patch_task_status(
     before = {"status": task.status}
     task.status = body.status
     if body.status in DONE_STATUSES:
-        task.completed_at = datetime.now(timezone.utc).replace(tzinfo=None)
+        task.completed_at = now_cn_naive()
     await log_operation(
         db,
         tenant_id=tenant_id,
@@ -3420,7 +3421,7 @@ async def patch_release_status(
     release_node.status = body.status
     content = _as_dict(release_node.content)
     content["status_note"] = body.note
-    content["last_status_changed_at"] = datetime.now(timezone.utc).isoformat()
+    content["last_status_changed_at"] = now_cn_aware().isoformat()
     release_node.content = content
     await log_operation(
         db,
@@ -3525,7 +3526,7 @@ async def patch_release_verification_item(
     target["status"] = body.status
     if body.status == "done":
         target["verified_by"] = str(current_user.id)
-        target["verified_at"] = datetime.now(timezone.utc).isoformat()
+        target["verified_at"] = now_cn_aware().isoformat()
     else:
         target["verified_by"] = None
         target["verified_at"] = None
@@ -3574,7 +3575,7 @@ async def complete_release_verification(
     incomplete = [item for item in items if str(item.get("status") or "").lower() != "done"]
     if incomplete:
         raise HTTPException(status_code=409, detail="仍有未完成验证项，请先逐项完成")
-    now_str = datetime.now(timezone.utc).isoformat()
+    now_str = now_cn_aware().isoformat()
     content["verification_items"] = items
     content["verification_done"] = True
     content["verification_progress"] = {"done": len(items), "total": len(items)}
@@ -3912,7 +3913,7 @@ async def archive_review(
     review_node.status = "archived" if body.archive else "draft"
     content = _as_dict(review_node.content)
     content["archive_note"] = body.note
-    content["archived_at"] = datetime.now(timezone.utc).isoformat() if body.archive else None
+    content["archived_at"] = now_cn_aware().isoformat() if body.archive else None
     review_node.content = content
     await log_operation(
         db,

backend/app/api/users.py

@@ -43,6 +43,7 @@ from ..services.ai_pmo_kernel_service import AIPMOKernelService
 from ..services.operation_log_service import log_operation
 from ..services import skill_service
 
+from ..utils.timezone import now_cn_naive
 router = APIRouter(prefix="/users", tags=["users"])
 
 COMPLETED_TASK_STATUSES = {"done", "completed", "closed", "resolved", "archived"}
@@ -650,7 +651,7 @@ async def reset_password(
         user.password_hash = AuthService.hash_password(body.new_password)
     except ValueError as exc:
         raise HTTPException(status_code=400, detail=str(exc)) from exc
-    user.updated_at = datetime.utcnow()
+    user.updated_at = now_cn_naive()
     await log_operation(
         db,
         tenant_id=tenant_id,
@@ -696,7 +697,7 @@ async def patch_user_status(
                     Task.assignee_id == user_id,
                 )
             )
-            .values(assignee_id=None, updated_at=datetime.utcnow())
+            .values(assignee_id=None, updated_at=now_cn_naive())
         )
         workload_result = await db.execute(
             select(UserWorkload).where(
@@ -986,7 +987,7 @@ async def update_user_workload(
         raise HTTPException(status_code=404, detail="User not found")
 
     user.workload = max(0, min(200, int(workload)))
-    user.updated_at = datetime.utcnow()
+    user.updated_at = now_cn_naive()
     await db.commit()
     await db.refresh(user)
     return _serialize_user(user)

backend/app/api/webhooks.py

@@ -13,6 +13,7 @@ from ..models import Signal
 from ..services.llm import llm_service
 from ..services.plane import plane_service
 
+from ..utils.timezone import now_cn_aware
 router = APIRouter(prefix="/webhooks", tags=["webhooks"])
 
 
@@ -94,7 +95,7 @@ async def handle_git_webhook(
                             t["status"] = "Done"
                             t["audit_feedback"] = audit_result.get("reason")
                             t["completed_at"] = (
-                                datetime.now(timezone.utc).isoformat()
+                                now_cn_aware().isoformat()
                             )
                     target_signal.tasks_generated = json.dumps(tasks)
                     await db.commit()

backend/app/dispatcher.py

@@ -12,6 +12,7 @@ import re
 import logging
 from pydantic import BaseModel, Field
 
+from .utils.timezone import now_cn_aware
 logger = logging.getLogger(__name__)
 
 
@@ -356,7 +357,7 @@ class RoutingResult(BaseModel):
     confidence: float
     details: Dict[str, Any]
     signal_id: Optional[str] = None
-    timestamp: float = Field(default_factory=lambda: datetime.utcnow().timestamp())
+    timestamp: float = Field(default_factory=lambda: now_cn_aware().timestamp())
 
 
 # 全局路由器实例

backend/app/events.py

@@ -12,6 +12,7 @@ import asyncio
 import logging
 from contextlib import asynccontextmanager
 
+from .utils.timezone import now_cn_aware
 logger = logging.getLogger(__name__)
 
 
@@ -74,7 +75,7 @@ class Event:
 
     type: EventType
     data: Dict[str, Any]
-    timestamp: float = field(default_factory=lambda: datetime.utcnow().timestamp())
+    timestamp: float = field(default_factory=lambda: now_cn_aware().timestamp())
     source: Optional[str] = None
     correlation_id: Optional[str] = None
     metadata: Dict[str, Any] = field(default_factory=dict)

backend/app/main.py

@@ -29,6 +29,7 @@ from .services.feishu_long_connection import init_feishu_long_connection_manager
 from .services.feishu_integration import dispatch_pending_feishu_replies
 from .services.context_cache import register_context_cache_invalidation_hooks
 
+from .utils.timezone import now_cn_aware
 configure_logging(settings.debug)
 logger = get_logger(__name__)
 register_context_cache_invalidation_hooks()
@@ -422,7 +423,7 @@ async def _get_recent_active_projects(
     limit_per_tenant: int,
     max_projects: int,
 ) -> list[tuple[int, int]]:
-    since = (datetime.now(timezone.utc) - timedelta(days=max(1, int(days)))).replace(tzinfo=None)
+    since = (now_cn_aware() - timedelta(days=max(1, int(days)))).replace(tzinfo=None)
     per_tenant_limit = max(1, int(limit_per_tenant))
     total_limit = max(per_tenant_limit, int(max_projects))
 

backend/app/services/adaptive_rag_service.py

@@ -54,6 +54,7 @@ from .signal_source_orchestration_service import SignalSourceOrchestrationServic
 from .symbol_index_service import SymbolIndexService
 
 
+from ..utils.timezone import CN_TZ, now_cn_aware, now_cn_naive
 def _env_int(name: str, default: int, *, minimum: int, maximum: int) -> int:
     raw = str(os.getenv(name, "") or "").strip()
     if not raw:
@@ -1408,7 +1409,7 @@ class AdaptiveRAGService:
             "original_question": str(question or "")[:4000],
             "normalized_question": summary,
             "write_mode": "ack_first",
-            "created_at": datetime.now(timezone.utc).isoformat(),
+            "created_at": now_cn_aware().isoformat(),
         }
         signal = Signal(
             source="PMFlow",
@@ -2366,7 +2367,7 @@ class AdaptiveRAGService:
         history = session_state.rewrite_history if isinstance(session_state.rewrite_history, list) else []
         history.append(
             {
-                "at": datetime.now(timezone.utc).isoformat(),
+                "at": now_cn_aware().isoformat(),
                 "question": question[:500],
                 "effective_question": effective_question[:500],
                 "query_type": str(query_type or QUERY_TYPE_UNKNOWN),
@@ -3116,7 +3117,7 @@ class AdaptiveRAGService:
                 symbol_snapshot=symbol_snapshot,
                 kg_overview=kg_overview,
             ),
-            "generated_at": datetime.now(timezone.utc).isoformat(),
+            "generated_at": now_cn_aware().isoformat(),
         }
 
     async def entity_resolution(
@@ -3516,7 +3517,7 @@ class AdaptiveRAGService:
                 "python_symbols": 0,
                 "typescript_symbols": 0,
                 "top_modules": [],
-                "generated_at": datetime.now(timezone.utc).isoformat(),
+                "generated_at": now_cn_aware().isoformat(),
             }
 
         candidates = [
@@ -3568,7 +3569,7 @@ class AdaptiveRAGService:
             "python_symbols": int(python_symbols),
             "typescript_symbols": int(ts_symbols),
             "top_modules": top_modules,
-            "generated_at": datetime.now(timezone.utc).isoformat(),
+            "generated_at": now_cn_aware().isoformat(),
         }
 
     @staticmethod
@@ -4730,7 +4731,7 @@ class AdaptiveRAGService:
             file_url=(file_url or "")[:1024] or None,
             uploaded_by=uploaded_by,
             status="processing",
-            last_fetched_at=datetime.now(timezone.utc) if source_type == "url" else None,
+            last_fetched_at=now_cn_naive() if source_type == "url" else None,
         )
         self.db.add(doc)
         await self.db.commit()
@@ -4814,7 +4815,7 @@ class AdaptiveRAGService:
             doc.status = "complete"
             doc.error_message = None
             if source_type == "url":
-                doc.last_fetched_at = datetime.now(timezone.utc)
+                doc.last_fetched_at = now_cn_naive()
             await self.db.commit()
         except Exception as exc:
             doc.status = "failed"
@@ -4906,7 +4907,7 @@ class AdaptiveRAGService:
                         "sender": sender,
                         "chat_id": chat_id,
                         "message_id": message_id,
-                        "captured_at": (captured_at or datetime.now(timezone.utc)).isoformat(),
+                        "captured_at": (captured_at or now_cn_aware()).isoformat(),
                     },
                 )
             )
@@ -5071,7 +5072,7 @@ class AdaptiveRAGService:
                         "project_id": int(project_id) if project_id is not None else None,
                         "target_url": target_url,
                         "title": title[:255],
-                        "updated_at": datetime.now(timezone.utc).isoformat(),
+                        "updated_at": now_cn_aware().isoformat(),
                     },
                 )
             )
@@ -5143,7 +5144,7 @@ class AdaptiveRAGService:
             "risk_level": risk,
             "target_url": None,
             "title": title,
-            "updated_at": datetime.now(timezone.utc).isoformat(),
+            "updated_at": now_cn_aware().isoformat(),
         }
         return record_id, title, content, metadata
 
@@ -5268,7 +5269,7 @@ class AdaptiveRAGService:
             return None
         if value.tzinfo is None:
             return value
-        return value.astimezone(timezone.utc).replace(tzinfo=None)
+        return value.astimezone(CN_TZ).replace(tzinfo=None)
 
     @staticmethod
     def _normalize_session_title_raw(text: str, *, max_len: int = 30) -> str:
@@ -5305,7 +5306,7 @@ class AdaptiveRAGService:
         if asked_by is None:
             return (None, 1)
 
-        now_utc = datetime.now(timezone.utc).replace(tzinfo=None)
+        now_utc = now_cn_naive()
         chosen: Optional[QASession] = None
         preferred_id = int(preferred_session_id) if preferred_session_id else 0
         if preferred_id > 0:

backend/app/services/ai_orchestration_run_service.py

@@ -9,9 +9,9 @@ from sqlalchemy import and_, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from ..models import AIOrchestrationRun
+
+
 from ..utils.timezone import now_cn_naive
-
-
 def _utc_now_naive() -> datetime:
     return now_cn_naive()
 

backend/app/services/ai_pmo_cadence_service.py

@@ -9,9 +9,9 @@ from sqlalchemy import and_, func, or_, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from ..models import Budget, Notification, PortfolioSnapshot, Project, ProjectDomain, ProjectSignalLink, Signal, SignalSourceRegistry, Task, UserProject, UserWorkload, WorkItem
+
+
 from ..utils.timezone import now_cn_naive
-
-
 def _utc_now_naive() -> datetime:
     return now_cn_naive()
 

backend/app/services/ai_pmo_kernel_service.py

@@ -72,8 +72,8 @@ from .openclaw_commander_service import OpenClawCommanderService
 from .ai_pmo_domain_workflow import SignalSourceDomainWorkflow
 from .llm import llm_service
 from .signal_source_orchestration_service import SignalSourceOrchestrationService
-from ..utils.timezone import now_cn_naive
 
+from ..utils.timezone import now_cn_naive
 logger = get_logger(__name__)
 
 INTENT_QUERY = "query.read_only"
@@ -103,6 +103,18 @@ RECEIPT_PHASE_ACTION = "action_applied"
 RECEIPT_PHASE_PENDING = "pending_manual"
 RECEIPT_PHASE_ERROR = "error"
 
+
+def _looks_like_upstream_timeout_message(text: str) -> bool:
+    lowered = str(text or "").strip().lower()
+    if not lowered:
+        return False
+    timeout_signals = (
+        "request timed out before a response was generated",
+        "agents.defaults.timeoutseconds",
+        "timeoutseconds",
+    )
+    return any(signal in lowered for signal in timeout_signals)
+
 QUESTION_HINTS = (
     "?",
     "？",
@@ -1035,6 +1047,19 @@ class AIPMOKernelService:
         project_hint_id: Optional[int] = None,
     ) -> dict[str, Any]:
         started = time.perf_counter()
+        perf_work_item_id: Optional[int] = None
+        perf_intent_name = ""
+
+        def _log_perf(stage_name: str, stage_started_at: float) -> None:
+            elapsed_seconds = time.perf_counter() - stage_started_at
+            perf_line = (
+                f"[PERF] {stage_name} took {elapsed_seconds:.2f}s "
+                f"work_item={perf_work_item_id if perf_work_item_id is not None else 'N/A'} "
+                f"intent={perf_intent_name or 'N/A'}"
+            )
+            logger.info(perf_line)
+            print(perf_line, flush=True)
+
         clean_text = self._normalize_text(message_text)
         if not clean_text:
             return {"handled": True, "status": "ignored", "classification": "empty", "direct_reply_required": False}
@@ -1096,6 +1121,7 @@ class AIPMOKernelService:
             source_message_id=synthetic_message_id,
             owner_user_id=_safe_int(getattr(operator, "id", None)),
         )
+        perf_work_item_id = int(work_item.id)
         session = await self._get_or_create_session(tenant_id=self.tenant_id, sender=sender)
 
         try:
@@ -1106,6 +1132,7 @@ class AIPMOKernelService:
                 query_tables=world_model_query_tables,
                 session=session,
             )
+            stage_started_at = time.perf_counter()
             world_model = await self.build_world_model(
                 tenant_id=self.tenant_id,
                 project_id=_safe_int(getattr(project, "id", None)),
@@ -1113,13 +1140,17 @@ class AIPMOKernelService:
                 project=project,
                 pre_queried_tables=world_model_query_tables,
             )
+            _log_perf("_build_world_model", stage_started_at)
             self._schedule_portfolio_snapshot_persist(world_model=world_model)
             work_item.state = STATE_MODELED
+            stage_started_at = time.perf_counter()
             intent, intent_context_source = await self._resolve_intent(
                 message_text=clean_text,
                 session=session,
                 world_model=world_model,
             )
+            perf_intent_name = intent.name
+            _log_perf("_resolve_intent", stage_started_at)
             if intent_context_source:
                 world_model["context_source"] = intent_context_source
             work_item.context_snapshot = world_model
@@ -1162,11 +1193,13 @@ class AIPMOKernelService:
 
             work_item.intent = intent.name
             work_item.project_id = intent.project_id
+            stage_started_at = time.perf_counter()
             decision_payload = self.decision_engine.decide(
                 intent=intent,
                 world_model=world_model,
                 message_text=clean_text,
             )
+            _log_perf("DecisionEngine.decide", stage_started_at)
             correction_action = str((intent.metadata or {}).get("correction_action") or "none").strip() or "none"
             requires_manual_review = bool((intent.metadata or {}).get("requires_manual_review"))
             manual_review_code = str((intent.metadata or {}).get("manual_review_code") or "manual_review_required").strip()
@@ -1291,7 +1324,8 @@ class AIPMOKernelService:
                     last_message_text=clean_text[:200],
                 )
                 await self.db.commit()
-                return self._build_capture_result(
+                stage_started_at = time.perf_counter()
+                capture_result = self._build_capture_result(
                     work_item=work_item,
                     intent=intent,
                     execution_result=work_item.execution_result or {},
@@ -1300,11 +1334,14 @@ class AIPMOKernelService:
                     status="captured",
                     classification="command",
                 )
+                _log_perf("_build_capture_result", stage_started_at)
+                return capture_result
 
             work_item.state = STATE_PLANNED
             work_item.action_bundle = decision_payload["execution_plan"]
             work_item.state = STATE_EXECUTING
             if intent.name in {INTENT_FOLLOWUP_CONFIRM, INTENT_FOLLOWUP_CONTINUE}:
+                stage_started_at = time.perf_counter()
                 execution_result, verification = await self._execute_followup_intent(
                     work_item=work_item,
                     intent=intent,
@@ -1317,7 +1354,9 @@ class AIPMOKernelService:
                     source_sender_open_id=source_sender_open_id,
                     world_model=world_model,
                 )
+                _log_perf("TypedExecutor.execute", stage_started_at)
             else:
+                stage_started_at = time.perf_counter()
                 execution_result = await self.executor.execute(
                     intent=intent,
                     message_text=clean_text,
@@ -1326,6 +1365,7 @@ class AIPMOKernelService:
                     source_system=source_system,
                     source_message_id=synthetic_message_id,
                 )
+                _log_perf("TypedExecutor.execute", stage_started_at)
                 verification = await self._verify_execution(intent=intent, execution_result=execution_result, world_model=world_model)
             if isinstance(execution_result, dict):
                 execution_result.setdefault("decision_trace", decision_trace)
@@ -1399,7 +1439,8 @@ class AIPMOKernelService:
                 last_message_text=clean_text[:200],
             )
             await self.db.commit()
-            return self._build_capture_result(
+            stage_started_at = time.perf_counter()
+            capture_result = self._build_capture_result(
                 work_item=work_item,
                 intent=intent,
                 execution_result=execution_result,
@@ -1412,6 +1453,8 @@ class AIPMOKernelService:
                     else ("signal" if intent.name == INTENT_SIGNAL_CREATE else "command")
                 ),
             )
+            _log_perf("_build_capture_result", stage_started_at)
+            return capture_result
         except Exception as exc:
             await self.db.rollback()
             logger.warning(
@@ -3160,6 +3203,17 @@ class AIPMOKernelService:
         classification: str,
     ) -> dict[str, Any]:
         linked_project_ids = [int(work_item.project_id)] if work_item.project_id is not None else []
+        direct_reply_text = str(render.get("text") or "").strip()
+        if _looks_like_upstream_timeout_message(direct_reply_text):
+            logger.warning(
+                "ai_pmo_upstream_timeout_reply_detected",
+                tenant_id=int(self.tenant_id),
+                work_item_id=int(work_item.id),
+                intent=str(intent.name or ""),
+                source_message_id=str(work_item.source_message_id or "")[:128],
+                observed_at=now_cn_naive().isoformat(),
+                reply_preview=direct_reply_text[:260],
+            )
         result = {
             "handled": True,
             "status": status,
@@ -3179,7 +3233,7 @@ class AIPMOKernelService:
             ],
             "intent": intent.name,
             "direct_reply_required": bool(direct_reply_required),
-            "direct_reply_text": str(render.get("text") or "").strip(),
+            "direct_reply_text": direct_reply_text,
             "reply_template_key": str(render.get("template_key") or "").strip(),
             "work_item_id": int(work_item.id),
             "decision_level": work_item.decision_level,

backend/app/services/ai_service.py

@@ -18,6 +18,7 @@ from typing import Any, AsyncGenerator, Optional, Union
 from sqlalchemy import and_, select
 
 # LangChain & OpenAI
+from ..utils.timezone import now_cn_naive
 try:
     from langchain_openai import ChatOpenAI
     from langchain_core.messages import HumanMessage, AIMessage, SystemMessage
@@ -524,7 +525,7 @@ class AIService:
                         if b:
                             b.quality_score = min(100, max(0, (b.quality_score or 0) + quality_score))
                             b.efficiency_score = min(100, max(0, (b.efficiency_score or 0) + efficiency_score))
-                            b.last_used_at = datetime.utcnow()
+                            b.last_used_at = now_cn_naive()
                             await db.commit()
                             updates.append({
                                 "user_id": str(uid),

backend/app/services/auditor.py

@@ -12,6 +12,7 @@ from pydantic import BaseModel, Field
 from datetime import datetime
 from enum import Enum
 
+from ..utils.timezone import now_cn_aware
 logger = logging.getLogger(__name__)
 
 
@@ -45,7 +46,7 @@ class AuditResult(BaseModel):
     issues: List[AuditIssue] = Field(default_factory=list)
     summary: str = ""
     details: Dict[str, Any] = Field(default_factory=dict)
-    timestamp: float = Field(default_factory=lambda: datetime.utcnow().timestamp())
+    timestamp: float = Field(default_factory=lambda: now_cn_aware().timestamp())
 
 
 class SecurityIssue(BaseModel):

backend/app/services/auth.py

@@ -11,6 +11,7 @@ import hmac
 import os
 
 # Try to import passlib, fallback to simple hashing
+from ..utils.timezone import now_cn_aware, now_cn_naive
 try:
     from passlib.context import CryptContext
     from jose import JWTError, jwt
@@ -106,15 +107,15 @@ class AuthService:
             import json
             token_data = {
                 **data,
-                "exp": (datetime.utcnow() + (expires_delta or timedelta(hours=ACCESS_TOKEN_EXPIRE_HOURS))).timestamp()
+                "exp": (now_cn_naive() + (expires_delta or timedelta(hours=ACCESS_TOKEN_EXPIRE_HOURS))).timestamp()
             }
             return base64.b64encode(json.dumps(token_data).encode()).decode()
 
         to_encode = data.copy()
         if expires_delta:
-            expire = datetime.utcnow() + expires_delta
+            expire = now_cn_naive() + expires_delta
         else:
-            expire = datetime.utcnow() + timedelta(hours=ACCESS_TOKEN_EXPIRE_HOURS)
+            expire = now_cn_naive() + timedelta(hours=ACCESS_TOKEN_EXPIRE_HOURS)
         to_encode.update({"exp": expire})
         return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
 
@@ -131,7 +132,7 @@ class AuthService:
             import json
             try:
                 token_data = json.loads(base64.b64decode(token).decode())
-                if token_data.get("exp", 0) > datetime.utcnow().timestamp():
+                if token_data.get("exp", 0) > now_cn_aware().timestamp():
                     return token_data.get("sub")
                 return None
             except:

backend/app/services/auto_merger.py

@@ -16,6 +16,7 @@ from datetime import datetime, timedelta
 from enum import Enum
 from ..events import Event, EventType
 
+from ..utils.timezone import now_cn_aware, now_cn_naive
 logger = logging.getLogger(__name__)
 
 
@@ -138,12 +139,12 @@ class AutoMergeService:
         # 4. 创建人工确认请求
         if self.HUMAN_CONFIRMATION_REQUIRED:
             confirmation_token = self._generate_confirmation_token()
-            expires_at = datetime.utcnow().timestamp() + self.CONFIRMATION_TIMEOUT
+            expires_at = now_cn_aware().timestamp() + self.CONFIRMATION_TIMEOUT
 
             confirmation = ConfirmationRequest(
                 token=confirmation_token,
                 merge_request=request,
-                created_at=datetime.utcnow().timestamp(),
+                created_at=now_cn_aware().timestamp(),
                 expires_at=expires_at,
             )
             self._pending_confirmations[confirmation_token] = confirmation
@@ -179,7 +180,7 @@ class AutoMergeService:
             )
 
         # 检查是否过期
-        if datetime.utcnow().timestamp() > confirmation.expires_at:
+        if now_cn_aware().timestamp() > confirmation.expires_at:
             del self._pending_confirmations[confirmation_token]
             return MergeResponse(
                 status=MergeStatus.REJECTED,
@@ -401,7 +402,7 @@ class AutoMergeService:
         if self._last_failure_time is None:
             return False
 
-        elapsed = (datetime.utcnow() - self._last_failure_time).total_seconds()
+        elapsed = (now_cn_naive() - self._last_failure_time).total_seconds()
         return elapsed < self.FAILURE_COOLDOWN_SECONDS
 
     def _get_cooldown_remaining(self) -> float:
@@ -409,7 +410,7 @@ class AutoMergeService:
         if self._last_failure_time is None:
             return 0.0
 
-        elapsed = (datetime.utcnow() - self._last_failure_time).total_seconds()
+        elapsed = (now_cn_naive() - self._last_failure_time).total_seconds()
         return max(0, self.FAILURE_COOLDOWN_SECONDS - elapsed)
 
     def _all_tests_passed(self, test_results: Dict[str, Any]) -> bool:
@@ -448,7 +449,7 @@ class AutoMergeService:
     def _record_failure(self):
         """记录失败"""
         self._failure_count += 1
-        self._last_failure_time = datetime.utcnow()
+        self._last_failure_time = now_cn_naive()
 
         # 检查是否需要进入熔断期
         if self._failure_count >= self.MAX_CONSECUTIVE_FAILURES:
@@ -478,7 +479,7 @@ class AutoMergeService:
     async def get_pending_confirmations(self) -> List[ConfirmationRequest]:
         """获取待确认的请求"""
         # 清理过期的确认请求
-        now = datetime.utcnow().timestamp()
+        now = now_cn_aware().timestamp()
         expired = [
             token for token, conf in self._pending_confirmations.items()
             if now > conf.expires_at

backend/app/services/blocker_detection.py

@@ -30,6 +30,7 @@ from .llm import LLMService
 
 
 # 阻塞模式正则表达式
+from ..utils.timezone import now_cn_naive
 BLOCKER_PATTERNS = [
     r'等待.*接口',
     r'等待.*API',
@@ -222,7 +223,7 @@ class BlockerDetectionService:
             raise ValueError(f"阻塞 {blocker_id} 不存在")
 
         blocker.status = 'resolved'
-        blocker.resolved_at = datetime.now(timezone.utc)
+        blocker.resolved_at = now_cn_naive()
         blocker.description += f"\n\n解决方案：{resolution_note}"
 
         await self.db.commit()

backend/app/services/budget_enforcement_service.py

@@ -18,6 +18,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from ..models import Budget, BudgetAlert
 
 
+from ..utils.timezone import now_cn_naive
 class BudgetEnforcementService:
     """预算强制执行服务"""
 
@@ -39,7 +40,7 @@ class BudgetEnforcementService:
                 "budget_checked": False,
             }
 
-        now = datetime.utcnow()
+        now = now_cn_naive()
         await self._ensure_current_period(budget, now)
 
         current_usage = float(budget.current_usage_usd or 0.0)
@@ -122,7 +123,7 @@ class BudgetEnforcementService:
         if not budget:
             return {"updated": False, "reason": "no_budget_configured"}
 
-        now = datetime.utcnow()
+        now = now_cn_naive()
         await self._ensure_current_period(budget, now)
 
         cost = max(float(actual_cost_usd or 0.0), 0.0)
@@ -255,7 +256,7 @@ class BudgetEnforcementService:
         if not budget:
             raise ValueError(f"预算 {budget_id} 不存在")
 
-        now = datetime.utcnow()
+        now = now_cn_naive()
         expires_at = now + timedelta(hours=max(duration_hours, 1))
         history = dict(budget.override_history or {})
         records = list(history.get("records", []))

backend/app/services/codegen.py

@@ -15,6 +15,7 @@ from pydantic import BaseModel, Field
 from datetime import datetime
 from pathlib import Path
 
+from ..utils.timezone import now_cn_aware
 logger = logging.getLogger(__name__)
 
 
@@ -91,7 +92,7 @@ class CodeDraftService:
         """
         生成代码草案（激进策略）
         """
-        start_time = datetime.utcnow().timestamp()
+        start_time = now_cn_aware().timestamp()
 
         try:
             # 1. 读取目标文件
@@ -130,7 +131,7 @@ class CodeDraftService:
             # 10. 收集警告
             warnings = self._collect_warnings(generated_files, file_contexts)
 
-            generation_time = datetime.utcnow().timestamp() - start_time
+            generation_time = now_cn_aware().timestamp() - start_time
 
             return CodeDraftResponse(
                 success=True,
@@ -158,7 +159,7 @@ class CodeDraftService:
                 confidence=0.0,
                 warnings=[f"生成过程出错: {str(e)}"],
                 review_points=[],
-                generation_time=datetime.utcnow().timestamp() - start_time,
+                generation_time=now_cn_aware().timestamp() - start_time,
             )
 
     async def _read_target_files(

backend/app/services/context_cache.py

@@ -15,6 +15,7 @@ from sqlalchemy.orm import Session
 
 from ..models import Project, ProjectSignalLink, Signal, Task, User, UserProject, UserWorkload
 
+from ..utils.timezone import now_cn_aware
 try:
     import redis.asyncio as redis_async
     from redis import Redis as RedisSync
@@ -178,7 +179,7 @@ class ContextCacheService:
             "projects": projects.get("items", []),
             "team_members": team,
             "pending_signals": pending,
-            "snapshot_at": datetime.now(timezone.utc).isoformat(),
+            "snapshot_at": now_cn_aware().isoformat(),
         }
 
     @staticmethod
@@ -558,7 +559,7 @@ class ContextCacheService:
                 "backend_root": str(backend_root),
                 "app_python_files": app_python_files,
                 "feature_catalog_source": str(feature_catalog.get("source") or "unknown"),
-                "scanned_at": datetime.now(timezone.utc).isoformat(),
+                "scanned_at": now_cn_aware().isoformat(),
             },
         }
 
@@ -654,7 +655,7 @@ class ContextCacheService:
         payload = {
             "items": items,
             "count": len(items),
-            "snapshot_at": datetime.now(timezone.utc).isoformat(),
+            "snapshot_at": now_cn_aware().isoformat(),
         }
         await self._set_json(key, payload, PROJECT_LIST_TTL_SECONDS)
         return payload
@@ -759,7 +760,7 @@ class ContextCacheService:
             "p0_count": int(p0_count or 0),
             "p1_count": int(p1_count or 0),
             "p2_count": int(p2_count or 0),
-            "snapshot_at": datetime.now(timezone.utc).isoformat(),
+            "snapshot_at": now_cn_aware().isoformat(),
         }
         await self._set_json(key, payload, SIGNAL_PENDING_TTL_SECONDS)
         return payload
@@ -892,7 +893,7 @@ class ContextCacheService:
             ],
             "pending_signals": pending_signals,
             "workload_ratio": workload_ratio,
-            "snapshot_at": datetime.now(timezone.utc).isoformat(),
+            "snapshot_at": now_cn_aware().isoformat(),
         }
 
     async def get_session_messages(self, *, tenant_id: int, session_id: Optional[int]) -> list[dict[str, str]]:

backend/app/services/daily_briefing.py

@@ -28,6 +28,7 @@ from ..models import (
 from .llm import LLMService
 
 
+from ..utils.timezone import now_cn_aware
 def _parse_involved_user_ids(raw_value: Any) -> List[int]:
     """兼容 involved_user_ids 的 list / json-string / 单值字符串。"""
     if raw_value is None:
@@ -86,7 +87,7 @@ class DailyBriefingService:
             raise ValueError(f"User {user_id} not found")
 
         # 计算时间范围
-        now = datetime.now(timezone.utc)
+        now = now_cn_aware()
         yesterday = now - timedelta(days=1)
 
         # 根据角色收集相关信息
@@ -456,7 +457,7 @@ class DailyBriefingService:
         return {
             'project_id': project_id,
             'project_name': project.title,
-            'generated_at': datetime.now(timezone.utc).isoformat(),
+            'generated_at': now_cn_aware().isoformat(),
             'task_summary': {
                 'total': len(tasks),
                 'by_status': status_counts,

backend/app/services/domain.py

@@ -13,6 +13,7 @@ from datetime import datetime
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from ..utils.timezone import now_cn_naive
 logger = logging.getLogger(__name__)
 
 
@@ -216,7 +217,7 @@ class ProjectDomainService:
                 await self._clear_default_domains()
             domain.is_default = request.is_default
 
-        domain.updated_at = datetime.utcnow()
+        domain.updated_at = now_cn_naive()
 
         await self.db.commit()
         await self.db.refresh(domain)
@@ -308,7 +309,7 @@ class ProjectDomainService:
             raise ValueError("Domain is not active")
 
         # 更新最后同步时间
-        domain.last_synced_at = datetime.utcnow()
+        domain.last_synced_at = now_cn_naive()
         await self.db.commit()
 
         # 设置活动域

backend/app/services/event_workflow.py

@@ -30,6 +30,7 @@ from .llm import LLMService
 from ..events import EventType, Event, get_event_bus
 
 
+from ..utils.timezone import now_cn_aware
 class WorkflowEventType:
     """工作流事件类型"""
     HIGH_IMPACT_SIGNAL = "high_impact_signal"
@@ -92,7 +93,7 @@ class EventDrivenWorkflowEngine:
                 {
                     'workflow_type': event_type,
                     'result': result,
-                    'timestamp': datetime.now(timezone.utc).isoformat()
+                    'timestamp': now_cn_aware().isoformat()
                 }
             )
 

backend/app/services/experiment_sync_service.py

@@ -9,6 +9,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from ..models import Experiment, ExperimentTruthNodeSync, TruthNode
 
 
+from ..utils.timezone import now_cn_aware, now_cn_naive
 class ExperimentSyncService:
     """实验结果 -> 宪章同步，支持自动应用、人工审核与回滚。"""
 
@@ -147,7 +148,7 @@ class ExperimentSyncService:
             return {"sync_id": record.id, "apply_status": record.apply_status}
 
         record.reviewed_by = reviewer_id
-        record.reviewed_at = datetime.now(timezone.utc)
+        record.reviewed_at = now_cn_naive()
         record.review_notes = review_notes
 
         if action == "approve":
@@ -192,7 +193,7 @@ class ExperimentSyncService:
 
         record.apply_status = "requires_review"
         record.reviewed_by = reviewer_id
-        record.reviewed_at = datetime.now(timezone.utc)
+        record.reviewed_at = now_cn_naive()
         record.review_notes = rollback_notes or "manual rollback"
 
         await self.db.commit()
@@ -293,7 +294,7 @@ class ExperimentSyncService:
             "sync_type": record.sync_type,
             "confidence_score": record.confidence_score,
             "experiment_summary": (record.sync_data or {}).get("experiment_summary", {}),
-            "applied_at": datetime.now(timezone.utc).isoformat(),
+            "applied_at": now_cn_aware().isoformat(),
         }
         content["experiment_sync"] = sync_section
         truth_node.content = content

backend/app/services/feishu_integration.py

@@ -41,10 +41,12 @@ from .notification_service import NotificationService
 from .signal_capture import ProactiveSignalCaptureService
 from .llm import LLMService
 
+from ..utils.timezone import now_cn_naive
 CN_TZ = timezone(timedelta(hours=8))
 WEEKDAY_CN = ["周一", "周二", "周三", "周四", "周五", "周六", "周日"]
 OUTBOX_MAX_ATTEMPTS = 3
 OUTBOX_STALE_SENDING_SECONDS = 120
+_OUTBOX_PERF_T0_BY_ID: dict[int, float] = {}
 
 
 class FeishuIntegrationService:
@@ -213,6 +215,15 @@ class FeishuIntegrationService:
         chat = event.get('chat', {}) if isinstance(event.get('chat', {}), dict) else {}
         sender = event.get('sender', {}) if isinstance(event.get('sender', {}), dict) else {}
         message_id = (message.get("message_id") or "").strip() or "unknown"
+        perf_t0_raw = event.get("_perf_t0")
+        perf_t0: Optional[float] = None
+        if isinstance(perf_t0_raw, (int, float)):
+            perf_t0 = float(perf_t0_raw)
+        else:
+            try:
+                perf_t0 = float(str(perf_t0_raw).strip())
+            except Exception:
+                perf_t0 = None
         self._emit_state_transition(
             trace_id=state_trace_id,
             state="RECEIVED",
@@ -254,6 +265,7 @@ class FeishuIntegrationService:
                     text="我已收到你的消息，但目前无法直接解析纯图片内容。请补充 1-2 句文字需求，我会立即给出分派建议。",
                     trace_id=state_trace_id,
                     source_message_id=message_id,
+                    perf_t0=perf_t0,
                 )
                 self._emit_state_transition(
                     trace_id=state_trace_id,
@@ -318,6 +330,7 @@ class FeishuIntegrationService:
                     text=self._build_error_reply_text(),
                     trace_id=state_trace_id,
                     source_message_id=message_id,
+                    perf_t0=perf_t0,
                 )
                 self._emit_state_transition(
                     trace_id=state_trace_id,
@@ -401,6 +414,7 @@ class FeishuIntegrationService:
                         text=deterministic_reply,
                         trace_id=state_trace_id,
                         source_message_id=message_id,
+                        perf_t0=perf_t0,
                     )
                     reply_route = "execute_template"
         elif scene == "qa":
@@ -417,6 +431,7 @@ class FeishuIntegrationService:
                     text=str(result.get("direct_reply_text") or "已收到，正在处理。"),
                     trace_id=state_trace_id,
                     source_message_id=message_id,
+                    perf_t0=perf_t0,
                 )
                 reply_route = "qa_direct"
             elif (
@@ -434,6 +449,7 @@ class FeishuIntegrationService:
                     capture_result=result,
                     trace_id=state_trace_id,
                     source_message_id=message_id,
+                    perf_t0=perf_t0,
                 )
                 reply_route = "qa_llm"
         else:
@@ -451,6 +467,7 @@ class FeishuIntegrationService:
                     text=self._build_error_reply_text(),
                     trace_id=state_trace_id,
                     source_message_id=message_id,
+                    perf_t0=perf_t0,
                 )
                 reply_route = "error_template"
 
@@ -589,6 +606,7 @@ class FeishuIntegrationService:
         capture_result: Dict[str, Any],
         trace_id: Optional[str] = None,
         source_message_id: Optional[str] = None,
+        perf_t0: Optional[float] = None,
     ) -> None:
         """被 @ 时回复一条有人味的执行反馈。"""
         deterministic_time_reply = self._build_time_truth_reply(message_content)
@@ -600,6 +618,7 @@ class FeishuIntegrationService:
                 text=deterministic_time_reply,
                 trace_id=trace_id,
                 source_message_id=source_message_id,
+                perf_t0=perf_t0,
             )
             return
 
@@ -619,6 +638,7 @@ class FeishuIntegrationService:
                 text=execution_receipt,
                 trace_id=trace_id,
                 source_message_id=source_message_id,
+                perf_t0=perf_t0,
             )
             return
 
@@ -631,6 +651,7 @@ class FeishuIntegrationService:
                 text=butler_reply,
                 trace_id=trace_id,
                 source_message_id=source_message_id,
+                perf_t0=perf_t0,
             )
             return
 
@@ -683,6 +704,7 @@ class FeishuIntegrationService:
             text=reply_text,
             trace_id=trace_id,
             source_message_id=source_message_id,
+            perf_t0=perf_t0,
         )
 
     async def _safe_reply_text(
@@ -694,6 +716,7 @@ class FeishuIntegrationService:
         mention_name: Optional[str] = None,
         trace_id: Optional[str] = None,
         source_message_id: Optional[str] = None,
+        perf_t0: Optional[float] = None,
     ) -> None:
         try:
             plain_text = self._normalize_outgoing_reply_text(text)
@@ -702,12 +725,27 @@ class FeishuIntegrationService:
                 display_name=mention_name,
             )
             final_text = f"{mention_prefix}{plain_text}".strip()
-            await self._enqueue_reply_outbox(
+            outbox_id = await self._enqueue_reply_outbox(
                 chat_id=chat_id,
                 message_text=final_text,
                 trace_id=trace_id,
                 source_message_id=source_message_id,
             )
+            perf_t1 = time.perf_counter()
+            if outbox_id > 0 and perf_t0 is not None:
+                _OUTBOX_PERF_T0_BY_ID[int(outbox_id)] = float(perf_t0)
+            if perf_t0 is not None:
+                print(
+                    f"[PERF] outbox_written ts={now_cn_naive().isoformat()} T1={perf_t1:.6f} "
+                    f"delta={perf_t1 - perf_t0:.2f}s "
+                    f"outbox_id={outbox_id}"
+                )
+            else:
+                print(
+                    f"[PERF] outbox_written ts={now_cn_naive().isoformat()} T1={perf_t1:.6f} "
+                    f"delta=N/A "
+                    f"outbox_id={outbox_id}"
+                )
         except Exception as exc:
             print(f"[Feishu] enqueue reply outbox failed: chat_id={chat_id}, error={exc}")
             # 统一由 drain_loop 消费 outbox，禁止业务路径直发，避免双发送。
@@ -783,7 +821,7 @@ class FeishuIntegrationService:
         fetch_limit = max(1, min(200, int(limit)))
         dispatched = 0
         for _ in range(fetch_limit):
-            claimed = await cls._claim_next_outbox_entry(now=datetime.utcnow())
+            claimed = await cls._claim_next_outbox_entry(now=now_cn_naive())
             if claimed is None:
                 break
             await cls._dispatch_claimed_outbox_entry(claimed=claimed)
@@ -883,10 +921,11 @@ class FeishuIntegrationService:
                     ).scalar_one_or_none()
                     if row is not None and str(row.status or "").lower() == "sending":
                         row.status = "sent"
-                        row.sent_at = datetime.utcnow()
+                        row.sent_at = now_cn_naive()
                         row.next_retry_at = None
                         row.last_error = f"dedupe_skip_sent:{int(sent_duplicate)}"
                         await db_skip.commit()
+                _OUTBOX_PERF_T0_BY_ID.pop(outbox_id, None)
                 return
 
         send_error: Optional[str] = None
@@ -914,18 +953,33 @@ class FeishuIntegrationService:
             attempts = int(row.attempts or claimed.get("attempts") or 0)
             if send_error is None:
                 row.status = "sent"
-                row.sent_at = datetime.utcnow()
+                row.sent_at = now_cn_naive()
                 row.next_retry_at = None
                 row.last_error = None
                 await db_update.commit()
+                perf_t2 = time.perf_counter()
+                perf_t0 = _OUTBOX_PERF_T0_BY_ID.pop(outbox_id, None)
+                if perf_t0 is not None:
+                    print(
+                        f"[PERF] reply_dispatched ts={now_cn_naive().isoformat()} T2={perf_t2:.6f} "
+                        f"delta={perf_t2 - perf_t0:.2f}s "
+                        f"outbox_id={outbox_id}"
+                    )
+                else:
+                    print(
+                        f"[PERF] reply_dispatched ts={now_cn_naive().isoformat()} T2={perf_t2:.6f} "
+                        f"delta=N/A "
+                        f"outbox_id={outbox_id}"
+                    )
                 return
             if attempts >= OUTBOX_MAX_ATTEMPTS:
                 row.status = "failed"
                 row.next_retry_at = None
+                _OUTBOX_PERF_T0_BY_ID.pop(outbox_id, None)
             else:
                 row.status = "retrying"
                 delay_seconds = min(30, 2 * (2 ** max(0, attempts - 1)))
-                row.next_retry_at = datetime.utcnow() + timedelta(seconds=delay_seconds)
+                row.next_retry_at = now_cn_naive() + timedelta(seconds=delay_seconds)
             row.last_error = (send_error or "unknown_send_error")[:1000]
             await db_update.commit()
 
@@ -1466,7 +1520,7 @@ class FeishuIntegrationService:
             ts = int(str(raw).strip())
             if ts > 10_000_000_000:
                 ts = ts / 1000.0
-            return datetime.fromtimestamp(ts, tz=timezone.utc)
+            return datetime.fromtimestamp(ts, tz=CN_TZ)
         except Exception:
             return None
 

backend/app/services/feishu_long_connection.py

@@ -18,6 +18,7 @@ from ..core.logging import get_logger
 from ..models import Integration
 from .feishu_integration import FeishuIntegrationService
 
+from ..utils.timezone import CN_TZ, now_cn_aware
 logger = get_logger(__name__)
 DEFAULT_FEISHU_LONG_CONNECTION_RETRY_MAX_ATTEMPTS = 3
 DEFAULT_FEISHU_LONG_CONNECTION_RETRY_BASE_SECONDS = 1.0
@@ -144,7 +145,7 @@ class FeishuLongConnectionManager:
             "last_disconnect_at": self._last_disconnect_at,
             "restart_attempts": self._restart_attempts,
             "next_retry_at": (
-                datetime.fromtimestamp(self._next_retry_at, tz=timezone.utc).isoformat()
+                datetime.fromtimestamp(self._next_retry_at, tz=CN_TZ).isoformat()
                 if self._next_retry_at > 0
                 else None
             ),
@@ -249,7 +250,7 @@ class FeishuLongConnectionManager:
 
             try:
                 await self._preflight_auth(tenant_id=self._tenant_id)
-                self._last_auth_at = datetime.now(timezone.utc).isoformat()
+                self._last_auth_at = now_cn_aware().isoformat()
             except Exception as exc:
                 code, retryable = self._classify_error(exc)
                 self._set_error(str(exc), code=code, retryable=retryable)
@@ -266,7 +267,7 @@ class FeishuLongConnectionManager:
                 return False
 
             self._clear_error()
-            self._last_connect_at = datetime.now(timezone.utc).isoformat()
+            self._last_connect_at = now_cn_aware().isoformat()
             self._last_disconnect_at = None
             self._restart_attempts = 0
             self._next_retry_at = 0.0
@@ -403,7 +404,7 @@ class FeishuLongConnectionManager:
                     logger.warning(f"feishu_long_connection_client_cleanup_failed: {exc}")
             self._client = None
             if self._running and not self._stopping:
-                self._last_disconnect_at = datetime.now(timezone.utc).isoformat()
+                self._last_disconnect_at = now_cn_aware().isoformat()
                 if not self._last_error_code:
                     self._set_error("feishu long connection thread exited", code="thread_exited", retryable=True)
                     self._schedule_retry()
@@ -416,6 +417,7 @@ class FeishuLongConnectionManager:
             return
 
         try:
+            perf_t0 = time.perf_counter()
             payload = self._to_dict(data)
             message_id = ""
             event_type = ""
@@ -432,6 +434,13 @@ class FeishuLongConnectionManager:
                 ).strip()
             except Exception:
                 pass
+            if isinstance(payload, dict):
+                payload["_perf_t0"] = float(perf_t0)
+            print(
+                f"[PERF] message_received ts={now_cn_aware().isoformat()} T0={perf_t0:.6f} "
+                f"message_id={message_id or 'unknown'} "
+                f"event_type={event_type or 'unknown'}"
+            )
             logger.info(
                 "feishu_long_connection_event_received: "
                 f"event_type={event_type or 'unknown'}, message_id={message_id or 'unknown'}"
@@ -468,7 +477,7 @@ class FeishuLongConnectionManager:
 
             try:
                 await self._process_payload(payload)
-                self._last_event_at = datetime.now(timezone.utc).isoformat()
+                self._last_event_at = now_cn_aware().isoformat()
             except Exception as exc:
                 self._set_error(str(exc), code="event_process_failed", retryable=True)
                 logger.warning(f"feishu_long_connection_process_failed: {exc}")
@@ -506,6 +515,10 @@ class FeishuLongConnectionManager:
         if event_type:
             event_data = {**event_data, "type": event_type}
 
+        perf_t0 = payload.get("_perf_t0")
+        if isinstance(perf_t0, (int, float)):
+            event_data = {**event_data, "_perf_t0": float(perf_t0)}
+
         if event_data:
             event_data = {**event_data, "_ingress_source": "long_connection"}
 

backend/app/services/feishu_signal_pipeline.py

@@ -42,8 +42,8 @@ from .notification_service import NotificationService
 from .openclaw_commander_service import OpenClawCommanderService, OperationExecutorService
 from ..utils.project_members import ensure_project_default_members
 from ..utils.sequence import ensure_project_id_sequence
-from ..utils.timezone import CN_TZ, now_cn_aware
 
+from ..utils.timezone import CN_TZ, now_cn_aware
 logger = get_logger(__name__)
 
 PROJECT_PRIORITY_ORDER = {
@@ -4048,7 +4048,7 @@ class FeishuSignalPipelineService:
         pending_rows = self._dedupe_queue_items(pending_rows)
         pending_rows = [row for row in pending_rows if not self._should_hide_pending_item_from_inbox(row)]
 
-        # DB 列是 timestamp without time zone，比较值必须使用 naive UTC，避免 asyncpg aware/naive 报错。
+        # DB 列是 timestamp without time zone，比较值必须使用 naive 北京时间，避免 asyncpg aware/naive 报错。
         today_start = _utc_now().astimezone(CN_TZ).replace(
             hour=0,
             minute=0,

backend/app/services/integration.py

@@ -16,6 +16,7 @@ from datetime import datetime, timedelta
 from enum import Enum
 import httpx
 
+from ..utils.timezone import now_cn_naive
 logger = logging.getLogger(__name__)
 
 
@@ -118,12 +119,12 @@ class IntegrationService:
             IntegrationType.PLANE: IntegrationHealth(
                 type=IntegrationType.PLANE,
                 status=IntegrationStatus.PENDING,
-                last_check=datetime.utcnow(),
+                last_check=now_cn_naive(),
             ),
             IntegrationType.LARK: IntegrationHealth(
                 type=IntegrationType.LARK,
                 status=IntegrationStatus.PENDING,
-                last_check=datetime.utcnow(),
+                last_check=now_cn_naive(),
             ),
         }
 
@@ -180,7 +181,7 @@ class IntegrationService:
                 errors=[f"Plane integration is {health.status.value}"],
             )
 
-        start_time = datetime.utcnow()
+        start_time = now_cn_naive()
 
         try:
             # 获取 Plane 服务
@@ -198,7 +199,7 @@ class IntegrationService:
                 await self._record_failure(integration_type, ", ".join(result.get("errors", [])))
 
             # 计算延迟
-            latency = (datetime.utcnow() - start_time).total_seconds() * 1000
+            latency = (now_cn_naive() - start_time).total_seconds() * 1000
             health.latency_ms = latency
 
             return TaskSyncResult(
@@ -245,7 +246,7 @@ class IntegrationService:
                 error=f"Lark integration is {health.status.value}",
             )
 
-        start_time = datetime.utcnow()
+        start_time = now_cn_naive()
 
         try:
             # 获取飞书服务
@@ -259,7 +260,7 @@ class IntegrationService:
             await self._record_success(integration_type)
 
             # 计算延迟
-            latency = (datetime.utcnow() - start_time).total_seconds() * 1000
+            latency = (now_cn_naive() - start_time).total_seconds() * 1000
             health.latency_ms = latency
 
             # 发送事件
@@ -384,12 +385,12 @@ class IntegrationService:
         """检查 Plane 集成健康"""
         integration_type = IntegrationType.PLANE
         health = self._health_status[integration_type]
-        start_time = datetime.utcnow()
+        start_time = now_cn_naive()
 
         if not self.config.plane.enabled or not self.config.plane.api_key:
             health.status = IntegrationStatus.INACTIVE
             health.message = "Plane integration is disabled"
-            health.last_check = datetime.utcnow()
+            health.last_check = now_cn_naive()
             return health
 
         try:
@@ -399,14 +400,14 @@ class IntegrationService:
 
             health.status = IntegrationStatus.ACTIVE
             health.message = "Connected"
-            health.last_check = datetime.utcnow()
+            health.last_check = now_cn_naive()
-            health.latency_ms = (datetime.utcnow() - start_time).total_seconds() * 1000
+            health.latency_ms = (now_cn_naive() - start_time).total_seconds() * 1000
 
         except Exception as e:
             logger.warning(f"[Integration] Plane health check failed: {e}")
             health.status = IntegrationStatus.ERROR
             health.message = f"Health check failed: {str(e)}"
-            health.last_check = datetime.utcnow()
+            health.last_check = now_cn_naive()
 
         return health
 
@@ -414,12 +415,12 @@ class IntegrationService:
         """检查飞书集成健康"""
         integration_type = IntegrationType.LARK
         health = self._health_status[integration_type]
-        start_time = datetime.utcnow()
+        start_time = now_cn_naive()
 
         if not self.config.lark.enabled or not self.config.lark.app_id:
             health.status = IntegrationStatus.INACTIVE
             health.message = "Lark integration is disabled"
-            health.last_check = datetime.utcnow()
+            health.last_check = now_cn_naive()
             return health
 
         try:
@@ -434,14 +435,14 @@ class IntegrationService:
                 health.status = IntegrationStatus.DEGRADED
                 health.message = "Running in simulation mode"
 
-            health.last_check = datetime.utcnow()
+            health.last_check = now_cn_naive()
-            health.latency_ms = (datetime.utcnow() - start_time).total_seconds() * 1000
+            health.latency_ms = (now_cn_naive() - start_time).total_seconds() * 1000
 
         except Exception as e:
             logger.warning(f"[Integration] Lark health check failed: {e}")
             health.status = IntegrationStatus.ERROR
             health.message = f"Health check failed: {str(e)}"
-            health.last_check = datetime.utcnow()
+            health.last_check = now_cn_naive()
 
         return health
 
@@ -494,7 +495,7 @@ class IntegrationService:
     async def _record_success(self, integration_type: IntegrationType) -> None:
         """记录成功操作"""
         health = self._health_status[integration_type]
-        health.last_success = datetime.utcnow()
+        health.last_success = now_cn_naive()
         health.consecutive_failures = 0
         if health.status == IntegrationStatus.ERROR:
             health.status = IntegrationStatus.ACTIVE
@@ -505,7 +506,7 @@ class IntegrationService:
         health.last_error = error
         health.error_count += 1
         health.consecutive_failures += 1
-        health.last_check = datetime.utcnow()
+        health.last_check = now_cn_naive()
 
         # 达到降级阈值
         if health.consecutive_failures >= self.MAX_CONSECUTIVE_FAILURES:

backend/app/services/llm.py

@@ -31,6 +31,7 @@ from ..config.ai_prompts import build_default_role_prompt_bundle
 from ..database import AsyncSessionLocal
 from ..models import AICallLog, Integration
 
+from ..utils.timezone import now_cn_aware
 try:
     import redis.asyncio as redis_async
 
@@ -290,10 +291,28 @@ def _cn_now_text() -> str:
     return datetime.now(cn_tz).strftime("%Y-%m-%d %H:%M:%S")
 
 
+def _cn_now_text_ms() -> str:
+    cn_tz = timezone(timedelta(hours=8))
+    return datetime.now(cn_tz).strftime("%Y-%m-%d %H:%M:%S.%f")[:-3]
+
+
 def _runtime_log(scope: str, message: str) -> None:
     print(f"[{_cn_now_text()}][{scope}] {message}")
 
 
+def _looks_like_openclaw_timeout_message(text: str) -> bool:
+    lowered = str(text or "").strip().lower()
+    if not lowered:
+        return False
+    timeout_signals = (
+        "request timed out before a response was generated",
+        "agents.defaults.timeoutseconds",
+        "timeoutseconds",
+        "before a response was generated",
+    )
+    return any(signal in lowered for signal in timeout_signals)
+
+
 @dataclass
 class ChatCompletionResult:
     text: str
@@ -460,7 +479,7 @@ class LLMService:
             raise ValueError("api_key 不能为空")
 
         integration, bundle = await self._get_or_init_bundle(db, tenant_id=tenant_id)
-        now = datetime.now(timezone.utc).isoformat()
+        now = now_cn_aware().isoformat()
         engine_id = str(uuid4())
         defaults = PROVIDER_DEFAULTS[provider]
         engine = {
@@ -521,7 +540,7 @@ class LLMService:
         if base_url is not None:
             target["base_url"] = (base_url or "").strip().rstrip("/") or defaults["base_url"]
 
-        target["updated_at"] = datetime.now(timezone.utc).isoformat()
+        target["updated_at"] = now_cn_aware().isoformat()
         integration.config = json.loads(json.dumps(bundle))
         await db.commit()
         return self._sanitize_engine_for_response(target)
@@ -1101,6 +1120,21 @@ class LLMService:
         if cleaned_system_prompt:
             messages.append({"role": "system", "content": cleaned_system_prompt})
         messages.append({"role": "user", "content": prompt})
+        request_trace_id = uuid4().hex[:12]
+        request_started_at_perf = time.perf_counter()
+        function_label = str(function_name or "llm_generate")
+        openclaw_agent_timeout = int(openclaw_agents_timeout_seconds) if is_openclaw_gateway_request else None
+
+        if is_openclaw_gateway_request:
+            _runtime_log(
+                "OpenClaw调用",
+                (
+                    f"start ts={_cn_now_text_ms()} trace_id={request_trace_id} "
+                    f"function={function_label} provider={provider_name} model={model} "
+                    f"request_timeout={float(request_timeout):.2f}s "
+                    f"agent_timeout={openclaw_agent_timeout if openclaw_agent_timeout is not None else 'N/A'}"
+                ),
+            )
 
         try:
             if provider_name == "ollama":
@@ -1150,6 +1184,25 @@ class LLMService:
             }
             async with httpx.AsyncClient(timeout=request_timeout, trust_env=False) as client:
                 resp = await client.post(endpoint, headers=headers, json=payload)
+                if is_openclaw_gateway_request:
+                    elapsed_ms = (time.perf_counter() - request_started_at_perf) * 1000.0
+                    _runtime_log(
+                        "OpenClaw调用",
+                        (
+                            f"http ts={_cn_now_text_ms()} trace_id={request_trace_id} "
+                            f"function={function_label} status={resp.status_code} elapsed_ms={elapsed_ms:.0f}"
+                        ),
+                    )
+                if resp.status_code >= 400:
+                    body_preview = str(resp.text or "").replace("\n", " ").strip()[:260]
+                    if is_openclaw_gateway_request:
+                        _runtime_log(
+                            "OpenClaw调用",
+                            (
+                                f"http_error ts={_cn_now_text_ms()} trace_id={request_trace_id} "
+                                f"function={function_label} status={resp.status_code} body={body_preview}"
+                            ),
+                        )
                     resp.raise_for_status()
                 data = resp.json()
             choices = data.get("choices") or []
@@ -1174,10 +1227,72 @@ class LLMService:
                     "LLM 返回空内容: "
                     f"message_keys={msg_keys}, choice_keys={choice_keys}, choice_preview={choice_preview}"
                 )
+            if _looks_like_openclaw_timeout_message(text):
+                elapsed_ms = (time.perf_counter() - request_started_at_perf) * 1000.0
+                _runtime_log(
+                    "OpenClaw超时" if is_openclaw_gateway_request else "LLM超时文本",
+                    (
+                        f"detected ts={_cn_now_text_ms()} trace_id={request_trace_id} "
+                        f"function={function_label} elapsed_ms={elapsed_ms:.0f} "
+                        f"text={text.replace(chr(10), ' ')[:260]}"
+                    ),
+                )
+                logger.warning(
+                    "llm_timeout_payload_detected",
+                    trace_id=request_trace_id,
+                    function_name=function_label,
+                    provider=provider_name,
+                    model=model,
+                    base_url=str(base_url or "")[:120],
+                    request_timeout_seconds=float(request_timeout),
+                    agent_timeout_seconds=openclaw_agent_timeout,
+                    text_preview=text.replace("\n", " ")[:260],
+                )
+            if is_openclaw_gateway_request:
+                elapsed_ms = (time.perf_counter() - request_started_at_perf) * 1000.0
+                _runtime_log(
+                    "OpenClaw调用",
+                    (
+                        f"end ts={_cn_now_text_ms()} trace_id={request_trace_id} "
+                        f"function={function_label} elapsed_ms={elapsed_ms:.0f} text_len={len(text)}"
+                    ),
+                )
             if use_provider_circuit_breaker:
                 self._record_provider_success(circuit_key)
             return ChatCompletionResult(text=text, raw_response=data)
         except Exception as exc:
+            if _looks_like_openclaw_timeout_message(str(exc)):
+                elapsed_ms = (time.perf_counter() - request_started_at_perf) * 1000.0
+                _runtime_log(
+                    "LLM超时异常",
+                    (
+                        f"detected ts={_cn_now_text_ms()} trace_id={request_trace_id} "
+                        f"function={function_label} elapsed_ms={elapsed_ms:.0f} "
+                        f"error={type(exc).__name__}:{str(exc)[:260]}"
+                    ),
+                )
+                logger.warning(
+                    "llm_timeout_exception_detected",
+                    trace_id=request_trace_id,
+                    function_name=function_label,
+                    provider=provider_name,
+                    model=model,
+                    base_url=str(base_url or "")[:120],
+                    request_timeout_seconds=float(request_timeout),
+                    agent_timeout_seconds=openclaw_agent_timeout,
+                    error_type=type(exc).__name__,
+                    error=str(exc)[:260],
+                )
+            if is_openclaw_gateway_request:
+                elapsed_ms = (time.perf_counter() - request_started_at_perf) * 1000.0
+                _runtime_log(
+                    "OpenClaw调用",
+                    (
+                        f"exception ts={_cn_now_text_ms()} trace_id={request_trace_id} "
+                        f"function={function_label} elapsed_ms={elapsed_ms:.0f} "
+                        f"error={type(exc).__name__}:{str(exc)[:260]}"
+                    ),
+                )
             if use_provider_circuit_breaker:
                 self._record_provider_failure(circuit_key, exc)
             raise

backend/app/services/model_capability_service.py

@@ -26,6 +26,7 @@ from ..models import (
 from ..services.ai_service import AIService
 
 
+from ..utils.timezone import now_cn_naive
 class ModelCapabilityService:
     """模型能力矩阵核心服务"""
 
@@ -649,7 +650,7 @@ class ModelCapabilityService:
             raise ValueError(f"能力差距 {gap_id} 不存在")
 
         gap.status = "resolved"
-        gap.resolved_at = datetime.utcnow()
+        gap.resolved_at = now_cn_naive()
         gap.resolution_notes = resolution_notes
         await self.db.commit()
 

backend/app/services/notification_service.py

@@ -10,6 +10,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from ..models import Notification, User
 
 
+from ..utils.timezone import CN_TZ, now_cn_aware
 class NotificationService:
     def __init__(self, db: AsyncSession):
         self.db = db
@@ -215,9 +216,9 @@ class NotificationService:
     @staticmethod
     def _format_cn_time(dt: Optional[datetime]) -> str:
         if not dt:
-            dt = datetime.now(timezone.utc)
+            dt = now_cn_aware()
         if dt.tzinfo is None:
-            dt = dt.replace(tzinfo=timezone.utc)
+            dt = dt.replace(tzinfo=CN_TZ)
         cn_tz = timezone(timedelta(hours=8))
         return dt.astimezone(cn_tz).strftime("%Y-%m-%d %H:%M:%S")
 

backend/app/services/openclaw_commander_service.py

@@ -41,9 +41,9 @@ from .sstc_service import ALIGNED_STATUSES
 from .task_persistence import build_task_create_draft, persist_task
 from ..utils.project_members import ensure_project_default_members
 from ..utils.sequence import ensure_project_id_sequence
-from ..utils.timezone import now_cn_naive
 from ..utils.title import compact_title
 
+from ..utils.timezone import now_cn_naive
 SUPPORTED_COMMANDER_OPERATION_CODES = (
     "project.create",
     "project.update",
@@ -2025,7 +2025,7 @@ class OperationExecutorService:
 
         task.status = status
         if status in DONE_TASK_STATUSES:
-            task.completed_at = datetime.now(timezone.utc).replace(tzinfo=None)
+            task.completed_at = now_cn_naive()
 
         await log_operation(
             self.db,

backend/app/services/project_knowledge_graph.py

@@ -32,11 +32,11 @@ from ..models import (
     Task,
     User,
 )
-from ..utils.timezone import now_cn_naive
 from .context_cache import context_cache_service
 from .symbol_index_service import SymbolIndexService
 
 
+from ..utils.timezone import now_cn_naive
 def _utc_now_naive() -> datetime:
     return now_cn_naive()
 

backend/app/services/prompt_profile_service.py

@@ -13,6 +13,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from ..config.ai_prompts import build_default_role_prompt_bundle
 from ..models import Integration
 
+from ..utils.timezone import now_cn_aware
 INTEGRATION_TYPE = "ai_prompt_profiles"
 ROLE_KEY_RE = re.compile(r"^[a-z0-9][a-z0-9_-]{1,31}$")
 MAX_ROLES = 12
@@ -35,7 +36,7 @@ def _safe_json(value: Any) -> dict[str, Any]:
 
 
 def _now_iso() -> str:
-    return datetime.now(timezone.utc).isoformat()
+    return now_cn_aware().isoformat()
 
 
 class PromptProfileService:

backend/app/services/signal_capture.py

@@ -46,6 +46,7 @@ from ..utils.project_members import ensure_project_default_members
 from ..utils.sequence import ensure_project_id_sequence, ensure_signal_id_sequence
 
 
+from ..utils.timezone import CN_TZ, now_cn_aware
 EMOJI_UNICODE_RE = re.compile(
     r"[\U0001F300-\U0001F6FF\U0001F700-\U0001F77F\U0001F780-\U0001F7FF"
     r"\U0001F800-\U0001F8FF\U0001F900-\U0001F9FF\U0001FA00-\U0001FAFF"
@@ -196,9 +197,9 @@ class ProactiveSignalCaptureService:
         - 分享技术文章
         """
         trace_id = f"feishu-{uuid4().hex[:12]}"
-        captured_dt = captured_at or datetime.now(timezone.utc)
+        captured_dt = captured_at or now_cn_aware()
         if captured_dt.tzinfo is None:
-            captured_dt = captured_dt.replace(tzinfo=timezone.utc)
+            captured_dt = captured_dt.replace(tzinfo=CN_TZ)
 
         proposer_name = self._normalize_single_line_text(sender or "未知用户", max_len=80) or "未知用户"
         proposer_open_id = self._normalize_single_line_text(proposer_open_id or "", max_len=128) or None
@@ -803,7 +804,7 @@ class ProactiveSignalCaptureService:
             processed=True,
             strategic_analysis=json.dumps({
                 'url': url,
-                'captured_at': datetime.now(timezone.utc).isoformat(),
+                'captured_at': now_cn_aware().isoformat(),
                 'user_id': user_id,
                 'ai_analysis': analysis.get('analysis', {})
             }),
@@ -862,7 +863,7 @@ class ProactiveSignalCaptureService:
                 'repo_url': repo_url,
                 'event_type': event_type,
                 'event_data': event_data,
-                'captured_at': datetime.now(timezone.utc).isoformat(),
+                'captured_at': now_cn_aware().isoformat(),
                 'ai_analysis': analysis.get('analysis', {})
             }),
             tasks_generated=json.dumps([]),
@@ -922,7 +923,7 @@ class ProactiveSignalCaptureService:
                             strategic_analysis=json.dumps({
                                 'hn_url': story.get('url'),
                                 'hn_points': story.get('points'),
-                                'captured_at': datetime.now(timezone.utc).isoformat(),
+                                'captured_at': now_cn_aware().isoformat(),
                                 'ai_analysis': analysis.get('analysis', {})
                             }),
                             tasks_generated=json.dumps(analysis.get('suggested_tasks', [])),
@@ -970,7 +971,7 @@ class ProactiveSignalCaptureService:
         logger.info("signal_capture_ai_think", stage=stage, **safe_payload)
         try:
             stage_zh = AI_THINK_STAGE_ZH.get(stage, stage)
-            now_text = self._format_cn_time(datetime.now(timezone.utc))
+            now_text = self._format_cn_time(now_cn_aware())
             print(
                 f"[{now_text}][AI思考][SignalCapture] {stage_zh} "
                 + json.dumps({"stage": stage, **safe_payload}, ensure_ascii=False)
@@ -1851,7 +1852,7 @@ class ProactiveSignalCaptureService:
     def _format_cn_time(dt: datetime) -> str:
         safe_dt = dt
         if safe_dt.tzinfo is None:
-            safe_dt = safe_dt.replace(tzinfo=timezone.utc)
+            safe_dt = safe_dt.replace(tzinfo=CN_TZ)
         cn_tz = timezone(timedelta(hours=8))
         return safe_dt.astimezone(cn_tz).strftime("%Y-%m-%d %H:%M:%S")
 
@@ -2135,9 +2136,9 @@ URL: {url}
         requested_at: Optional[datetime] = None,
     ) -> Optional[int]:
         """当分类为 new_project 时，自动创建项目并关联当前信号。"""
-        requested_dt = requested_at or datetime.now(timezone.utc)
+        requested_dt = requested_at or now_cn_aware()
         if requested_dt.tzinfo is None:
-            requested_dt = requested_dt.replace(tzinfo=timezone.utc)
+            requested_dt = requested_dt.replace(tzinfo=CN_TZ)
         project_brief = await self._draft_new_project_brief(
             message=message,
             tenant_id=tenant_id,

backend/app/services/signal_source_orchestration_service.py

@@ -28,11 +28,11 @@ from ..models import (
     User,
 )
 from ..database import AsyncSessionLocal
-from ..utils.timezone import now_cn_naive
 from .ai_orchestration_run_service import AIOrchestrationRunService
 from .prompt_profile_service import prompt_profile_service
 from .llm import llm_service
 
+from ..utils.timezone import now_cn_naive
 SOURCE_ONBOARDING_ACTION_RE = re.compile(
     r"(新增|增加|添加|接入|配置|注册|建立|加个|加一个|加).{0,8}(信号源|来源|监控源|channel|source|webhook|飞书|github|url|rss)",
     re.IGNORECASE,

backend/app/services/skill_score_service.py

@@ -14,6 +14,7 @@ from ..database import AsyncSessionLocal
 from ..models import AICallLog, Task, UserSkillBinding
 from .llm import llm_service
 
+from ..utils.timezone import now_cn_naive
 PRIORITY_WEIGHT = {
     "critical": 1.5,
     "high": 1.2,
@@ -117,8 +118,8 @@ async def _apply_skill_deltas(
             float(row.efficiency_score or 0.0) * 0.5
         )
         row.proficiency = int(_clamp(round(combined), 0, 100))
-        row.last_used_at = datetime.utcnow()
+        row.last_used_at = now_cn_naive()
-        row.updated_at = datetime.utcnow()
+        row.updated_at = now_cn_naive()
         touched += 1
 
     return touched

backend/app/services/skill_service.py

@@ -21,6 +21,7 @@ from .ai_pmo_kernel_service import AIPMOKernelService
 
 
 # 系统预设 AI 开发专属技能标签
+from ..utils.timezone import now_cn_naive
 SYSTEM_SKILL_TAGS = [
     {"name": "Python", "slug": "python", "category": "language", "sort_order": 1},
     {"name": "TypeScript", "slug": "typescript", "category": "language", "sort_order": 2},
@@ -196,7 +197,7 @@ async def update_skill_tag(
         tag.description = description
     if sort_order is not None:
         tag.sort_order = sort_order
-    tag.updated_at = datetime.utcnow()
+    tag.updated_at = now_cn_naive()
     await db.commit()
     await db.refresh(tag)
     return tag

backend/app/services/sstc_service.py

@@ -22,6 +22,7 @@ from ..models import (
 )
 from ..utils.project_members import ensure_project_default_members
 
+from ..utils.timezone import now_cn_aware
 DONE_STATUSES = {"done", "completed"}
 ACTIVE_STATUSES = {"in_progress", "review"}
 BLOCKED_STATUSES = {"blocked"}
@@ -248,7 +249,7 @@ class SSTCService:
             [
                 t
                 for t in tasks
-                if t.due_date and t.due_date < datetime.now(timezone.utc).replace(tzinfo=None) and (t.status or "").lower() not in DONE_STATUSES
+                if t.due_date and t.due_date < now_cn_aware().replace(tzinfo=None) and (t.status or "").lower() not in DONE_STATUSES
             ]
         )
         return {
@@ -453,7 +454,7 @@ class SSTCService:
         overdue_tasks = [
             t
             for t in tasks
-            if t.due_date and t.due_date < datetime.now(timezone.utc).replace(tzinfo=None) and (t.status or "").lower() not in DONE_STATUSES
+            if t.due_date and t.due_date < now_cn_aware().replace(tzinfo=None) and (t.status or "").lower() not in DONE_STATUSES
         ]
         risk_items = [
             {

backend/app/services/symbol_index_service.py

@@ -22,6 +22,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from ..models import SymbolDefinition, SymbolReference
 
 
+from ..utils.timezone import CN_TZ, now_cn_aware, now_cn_naive
 TS_SYMBOL_RE = re.compile(
     r"^\s*(?:export\s+)?(?:default\s+)?(?:async\s+)?(?:function|class|interface|type|const)\s+([A-Za-z_][A-Za-z0-9_]*)",
     re.MULTILINE,
@@ -127,7 +128,7 @@ class SymbolIndexService:
                 text = file_path.read_text(encoding="utf-8", errors="ignore")
                 rel_path = self._to_rel_path(file_path=file_path, workspace_root=workspace_root, backend_root=backend_root)
                 file_hash = hashlib.sha1(text.encode("utf-8")).hexdigest()
-                mtime = datetime.fromtimestamp(file_path.stat().st_mtime, tz=timezone.utc).replace(tzinfo=None)
+                mtime = datetime.fromtimestamp(file_path.stat().st_mtime, tz=CN_TZ).replace(tzinfo=None)
                 if not force_reindex:
                     latest_hash = await self._get_latest_file_hash(rel_path=rel_path)
                     if latest_hash and latest_hash == file_hash:
@@ -156,7 +157,7 @@ class SymbolIndexService:
 
         await self.db.commit()
         stats["errors"] = stats["errors"][:20]
-        stats["finished_at"] = datetime.now(timezone.utc).isoformat()
+        stats["finished_at"] = now_cn_aware().isoformat()
         return stats
 
     async def search_symbols(
@@ -327,7 +328,7 @@ class SymbolIndexService:
                 {"module": str(path), "symbols": int(cnt or 0)}
                 for path, cnt in file_groups
             ],
-            "snapshot_at": datetime.now(timezone.utc).isoformat(),
+            "snapshot_at": now_cn_aware().isoformat(),
         }
 
     async def _get_latest_file_hash(self, *, rel_path: str) -> Optional[str]:
@@ -391,7 +392,7 @@ class SymbolIndexService:
                 source_mtime=source_mtime,
                 status="active",
                 payload=item.payload,
-                last_indexed_at=datetime.now(timezone.utc).replace(tzinfo=None),
+                last_indexed_at=now_cn_naive(),
             )
             self.db.add(row)
             created_symbols.append(row)

backend/app/services/task_persistence.py

@@ -14,6 +14,7 @@ from ..utils.title import compact_title
 from . import workload_service
 from .operation_log_service import log_operation
 
+from ..utils.timezone import CN_TZ
 TASK_PRIORITY_MAP = {
     "p0": "high",
     "critical": "high",
@@ -98,7 +99,7 @@ def normalize_due_date(value: Any) -> Optional[datetime]:
         return None
     if isinstance(value, datetime):
         if value.tzinfo is not None:
-            return value.astimezone(timezone.utc).replace(tzinfo=None)
+            return value.astimezone(CN_TZ).replace(tzinfo=None)
         return value
     text = str(value).strip()
     if not text:

backend/app/services/workload_alert_service.py

@@ -11,6 +11,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from ..models import OperationLog, Task, User, UserProject, UserWorkload
 from .lark import lark_service
 
+from ..utils.timezone import now_cn_naive
 DONE_STATUSES = {"done", "completed", "closed", "resolved", "archived"}
 
 
@@ -200,7 +201,7 @@ async def process_tenant_unresolved_overloads(
     user_rows = rows.all()
 
     created = 0
-    now = datetime.utcnow()
+    now = now_cn_naive()
     for user_id_raw, ratio_raw in user_rows:
         user_id = int(user_id_raw)
         ratio = float(ratio_raw or 0.0)

backend/app/services/workload_service.py

@@ -13,6 +13,7 @@ from ..config.ai_prompts import PROMPT_WORKLOAD_OPTIMIZATION
 from ..models import AICallLog, Task, User, UserProject, UserSkillBinding, UserWorkload
 from .llm import llm_service
 
+from ..utils.timezone import now_cn_naive
 LEVEL_HOURS_MULTIPLIER = {
     "expert": 0.8,
     "advanced": 0.9,
@@ -101,7 +102,7 @@ async def recalculate_user_workload_ratio(
     )
     workload.workload_ratio = ratio
     user.workload = int(max(0, min(200, ratio)))
-    user.updated_at = datetime.utcnow()
+    user.updated_at = now_cn_naive()
     try:
         from . import workload_alert_service
 

backend/app/websocket.py

@@ -11,6 +11,7 @@ import logging
 from fastapi import WebSocket, WebSocketDisconnect
 from enum import Enum
 
+from .utils.timezone import now_cn_aware, now_cn_naive
 logger = logging.getLogger(__name__)
 
 
@@ -29,7 +30,7 @@ class WebSocketConnection:
         self.websocket = websocket
         self.client_id = client_id
         self.subscriptions: Set[str] = set()
-        self.connected_at = datetime.utcnow()
+        self.connected_at = now_cn_naive()
         self.last_ping: Optional[datetime] = None
 
     async def send(self, data: Dict[str, Any]) -> bool:
@@ -44,8 +45,8 @@ class WebSocketConnection:
     async def ping(self) -> bool:
         """发送 ping"""
         try:
-            await self.websocket.send_json({"type": "ping", "timestamp": datetime.utcnow().timestamp()})
+            await self.websocket.send_json({"type": "ping", "timestamp": now_cn_aware().timestamp()})
-            self.last_ping = datetime.utcnow()
+            self.last_ping = now_cn_naive()
             return True
         except Exception as e:
             logger.error(f"Error pinging client {self.client_id}: {e}")
@@ -113,7 +114,7 @@ class WebSocketManager:
         await connection.send({
             "type": ConnectionEventType.CONNECTED,
             "client_id": client_id,
-            "timestamp": datetime.utcnow().timestamp(),
+            "timestamp": now_cn_aware().timestamp(),
         })
 
         logger.info(f"WebSocket client connected: {client_id}")
@@ -135,7 +136,7 @@ class WebSocketManager:
             await connection.send({
                 "type": ConnectionEventType.SUBSCRIBED,
                 "event_types": list(connection.subscriptions),
-                "timestamp": datetime.utcnow().timestamp(),
+                "timestamp": now_cn_aware().timestamp(),
             })
 
     async def unsubscribe(self, client_id: str, event_types: List[str]):
@@ -148,7 +149,7 @@ class WebSocketManager:
             await connection.send({
                 "type": ConnectionEventType.UNSUBSCRIBED,
                 "event_types": list(connection.subscriptions),
-                "timestamp": datetime.utcnow().timestamp(),
+                "timestamp": now_cn_aware().timestamp(),
             })
 
     async def broadcast(self, event_type: str, data: Dict[str, Any]) -> int:
@@ -166,7 +167,7 @@ class WebSocketManager:
             "type": "event",
             "event_type": event_type,
             "data": data,
-            "timestamp": datetime.utcnow().timestamp(),
+            "timestamp": now_cn_aware().timestamp(),
         }
 
         success_count = 0

scripts/ai_steward_eval.py

@@ -17,6 +17,7 @@ from datetime import datetime, timezone
 from pathlib import Path
 from typing import Any
 
+from backend.app.utils.timezone import now_cn_aware
 try:
     import httpx
 except Exception:  # pragma: no cover
@@ -259,7 +260,7 @@ def _build_report(
 
     return {
         "version": "v1",
-        "generated_at": datetime.now(timezone.utc).isoformat(),
+        "generated_at": now_cn_aware().isoformat(),
         "mode": mode,
         "api_url": api_url,
         "thresholds": thresholds,
@@ -297,7 +298,7 @@ def _build_report(
 
 def _write_report(report: dict[str, Any], output_dir: Path) -> Path:
     output_dir.mkdir(parents=True, exist_ok=True)
-    ts = datetime.now(timezone.utc).strftime("%Y%m%dT%H%M%SZ")
+    ts = now_cn_aware().strftime("%Y%m%dT%H%M%SZ")
     report_path = output_dir / f"ai_steward_eval_{ts}.json"
     report_path.write_text(json.dumps(report, ensure_ascii=False, indent=2), encoding="utf-8")
     latest = output_dir / "latest.json"

scripts/ai_steward_pressure_coach.py

@@ -26,6 +26,7 @@ from typing import Any, Iterable
 import httpx
 
 
+from backend.app.utils.timezone import now_cn_aware
 DEFAULT_TEMPLATE_LEAK_PATTERNS = [
     "当前系统采用前后端分层架构",
     "fastapi + sqlalchemy",
@@ -823,7 +824,7 @@ async def _amain() -> int:
     args.sleep_ms = max(0, min(args.sleep_ms, 10000))
     args.timeout_seconds = max(5.0, min(args.timeout_seconds, 300.0))
 
-    started_at = datetime.now(timezone.utc).isoformat()
+    started_at = now_cn_aware().isoformat()
     scenarios = _build_scenarios(args.mode)
     token = await _login_token(
         base_url=args.base_url,
@@ -853,7 +854,7 @@ async def _amain() -> int:
     ]
     results = await asyncio.gather(*tasks)
     metrics = _merge_metrics(results)
-    finished_at = datetime.now(timezone.utc).isoformat()
+    finished_at = now_cn_aware().isoformat()
 
     report = _build_report(
         started_at=started_at,