fix(pool): 优化批量删除性能，使用 SQL 批量删除替代逐条 ORM 删除

- 后端批量删除改用 sa_delete 直接执行 SQL，避免逐条加载和删除
- 前端删除操作批次大小从 2000 减小到 50，防止大批量删除超时
- 增加前端批量操作失败时的错误日志输出

frontend/src/features/pool/components/PoolAccountBatchDialog.vue

@@ -620,9 +620,8 @@ async function executeAction(): Promise<void> {
         progressDone.value = Math.min(i + BATCH_SIZE, targetIds.length)
       }
     } else if (['delete', 'enable', 'disable', 'clear_proxy', 'set_proxy'].includes(selectedAction.value)) {
-      // 使用 batch-action API，每批最多 2000 个
       const targetIds = selectedKeys.map((key) => key.key_id)
-      const BATCH_SIZE = 2000
+      const BATCH_SIZE = selectedAction.value === 'delete' ? 50 : 2000
       const totalBatches = Math.ceil(targetIds.length / BATCH_SIZE)
 
       for (let i = 0; i < targetIds.length; i += BATCH_SIZE) {
@@ -643,7 +642,9 @@ async function executeAction(): Promise<void> {
             ...(payload ? { payload } : {}),
           })
           successCount += result.affected
-        } catch {
+        } catch (err) {
+          // eslint-disable-next-line no-console
+          console.error(`batch ${selectedAction.value} failed (batch ${batchIndex}/${totalBatches}):`, err)
           failedCount += batch.length
         }
 

src/api/admin/pool/routes.py

@@ -16,7 +16,9 @@ from datetime import datetime, timezone
 from typing import Any
 
 from fastapi import APIRouter, Depends, Query, Request
-from sqlalchemy import case, func
+from sqlalchemy import case
+from sqlalchemy import delete as sa_delete
+from sqlalchemy import func
 from sqlalchemy.orm import Session, load_only
 
 from src.api.base.admin_adapter import AdminApiAdapter
@@ -1005,6 +1007,40 @@ class AdminBatchActionKeysAdapter(AdminApiAdapter):
         pid = str(provider.id)
         affected = 0
 
+        if self.body.action == "delete":
+            # 批量 SQL 删除，避免逐条 ORM delete
+            key_ids = self.body.key_ids
+            try:
+                result = db.execute(
+                    sa_delete(ProviderAPIKey).where(
+                        ProviderAPIKey.provider_id == pid,
+                        ProviderAPIKey.id.in_(key_ids),
+                    )
+                )
+                affected = result.rowcount  # type: ignore[assignment]
+                db.commit()
+            except Exception as exc:
+                db.rollback()
+                logger.error("batch delete commit failed: {}", exc)
+                return BatchActionResponse(affected=0, message=f"commit failed: {exc}")
+
+            if affected > 0:
+                from src.services.provider_keys.key_side_effects import (
+                    run_delete_key_side_effects,
+                )
+
+                try:
+                    await run_delete_key_side_effects(
+                        db=db,
+                        provider_id=pid,
+                        deleted_key_allowed_models=None,
+                    )
+                except Exception as exc:
+                    logger.error("batch delete side effects failed: {}", exc)
+
+            admin_name = context.user.username if context.user else "admin"
+            affected_ids = [kid[:8] for kid in key_ids[:20]]
+        else:
             keys = (
                 db.query(ProviderAPIKey)
                 .filter(
@@ -1025,10 +1061,6 @@ class AdminBatchActionKeysAdapter(AdminApiAdapter):
                     key.is_active = False
                     affected += 1
 
-            elif self.body.action == "delete":
-                db.delete(key)
-                affected += 1
-
                 elif self.body.action == "clear_cooldown":
                     await pool_redis.clear_cooldown(pid, kid)
                     affected += 1
@@ -1052,7 +1084,6 @@ class AdminBatchActionKeysAdapter(AdminApiAdapter):
             if self.body.action in {
                 "enable",
                 "disable",
-            "delete",
                 "regenerate_fingerprint",
                 "clear_proxy",
                 "set_proxy",
@@ -1064,17 +1095,8 @@ class AdminBatchActionKeysAdapter(AdminApiAdapter):
                     logger.error("batch action commit failed: {}", exc)
                     return BatchActionResponse(affected=0, message=f"commit failed: {exc}")
 
-        if self.body.action == "delete" and affected > 0:
+            admin_name = context.user.username if context.user else "admin"
-            from src.services.provider_keys.key_side_effects import run_delete_key_side_effects
+            affected_ids = [str(k.id)[:8] for k in keys]
-
-            try:
-                await run_delete_key_side_effects(
-                    db=db,
-                    provider_id=pid,
-                    deleted_key_allowed_models=None,
-                )
-            except Exception as exc:
-                logger.error("batch delete side effects failed: {}", exc)
 
         action_labels = {
             "enable": "enabled",
@@ -1086,9 +1108,6 @@ class AdminBatchActionKeysAdapter(AdminApiAdapter):
             "clear_proxy": "proxy cleared",
             "set_proxy": "proxy set",
         }
-
-        admin_name = context.user.username if context.user else "admin"
-        affected_ids = [str(k.id)[:8] for k in keys]
         logger.info(
             "Pool batch action by {}: provider={}, action={}, affected={}, key_ids={}",
             admin_name,