chore(P3): baseline 落库下沉 + MatchPredictPanel 拆分 + 多 worker/CSRF 文档

P3-2 baseline 落库从路由下沉到服务层(predict_baseline 内直接落库),
删除路由层 _persist_baseline,三种模式统一 result.prediction_id,对外 JSON 不变。

P3-1 MatchPredictPanel.PredictionPanel 拆为 OutcomePanel/AgentsPanel/ReasoningPanel
三个子组件,本文件保留 PredictModal/PredictProgress/Spinner,对外导出路径不变。

P3-3 docs 加 ⚠️ 多 worker 陷阱红字 + STRICT_SINGLE_WORKER 环境变量(启动期强制拒绝多 worker)。
P3-4 docs 新增「同站部署 vs 跨站 CSRF」节。

src/api/routes/predict.py

@@ -64,11 +64,9 @@ async def predict(req: PredictRequest, request: Request):
         raise HTTPException(500, "预测失败,请查看服务器日志")
 
     # D2: 三种模式统一返回 PredictResult —— 字段映射单一化,无 dict 分支。
-    # 仅 baseline 的 prediction_id 需要在此落库补齐(服务层不落库)。
-    if req.mode == "baseline":
-        prediction_id = await _persist_baseline(req.match_id, result)
-    else:
-        prediction_id = result.prediction_id
+    # P3-2:baseline 已在服务层(predict_baseline)落库并回填真实 prediction_id,
+    # 路由层不再需要特殊的 _persist_baseline,与 single/multi 路径统一。
+    prediction_id = result.prediction_id
 
     # 3. 结果映射(无 DB 访问)
     logger.info(
@@ -101,36 +99,6 @@ async def predict(req: PredictRequest, request: Request):
     )
 
 
-async def _persist_baseline(match_id: int, baseline: PredictResult) -> int:
-    """将基线预测结果写入 prediction 表,复用 upsert 语义。"""
-    from src.db.unit_of_work import get_uow
-    from src.llm.predict import _upsert_prediction
-
-    async with get_uow() as session:
-        pred = await _upsert_prediction(
-            session,
-            match_id=match_id,
-            provider_name="baseline",
-            model="baseline",
-            mode="baseline",
-            run_type="live",  # baseline 是 live 预测的变体,符合 ck_run_type_enum
-            values={
-                "prompt_version": baseline.prompt_version,
-                "prompt_tokens": baseline.prompt_tokens or 0,
-                "completion_tokens": baseline.completion_tokens or 0,
-                "latency_ms": baseline.latency_ms or 0,
-                "pred_home_goals": baseline.pred_home_goals,
-                "pred_away_goals": baseline.pred_away_goals,
-                "pred_1x2": baseline.pred_1x2,
-                "subjective_confidence": baseline.subjective_confidence,
-                "reasoning": baseline.reasoning,
-                "raw_response": baseline.raw,
-                "status": "success",
-            },
-        )
-        return pred.id
-
-
 @router.get("/predictions", response_model=list[PredictionOut], dependencies=[Depends(require_admin)])
 async def list_predictions(
     match_id: int | None = None,