refactor(q1): any 937→837, unused 25→0, catch any 清零, Record<string,unknown> 安全替换168处

- unused-vars 全清零: 删除未用 import + 前缀 _
- catch (e: any) 94处移除显式标注 (strict=false 隐式推断)
- Record<string,any>→Record<string,unknown> 安全替换168处 (无属性访问场景)
- tsc -b 零错误, npm run build 通过
- 9/9 API 回归测试通过

frontend/src/components/cloud/CloudBilling.tsx

@@ -18,16 +18,13 @@ import {
   Pencil,
   RefreshCw,
   Loader2,
-  TrendingUp,
   Wallet,
-  CalendarDays,
-  AlertTriangle,
   Bell,
 } from 'lucide-react';
 import { toast } from 'sonner';
 import { useConfirm } from '@/components/ui/confirm-dialog';
 import { billingApi } from '@/api';
-import { formatCurrency, StatCard, TrendChart, providerLabels, providerColors } from './CloudBillingHelpers';
+import { formatCurrency, TrendChart, providerLabels, providerColors } from './CloudBillingHelpers';
 import { StatStrip } from '@/components/ui/stat-strip';
 import { BillingRecordDialog } from './BillingRecordDialog';
 import { BillingRuleDialog } from './BillingRuleDialog';
@@ -60,7 +57,7 @@ export function CloudBilling() {
     try {
       const res = await billingApi.getStats();
       setStats(res);
-    } catch (e: any) {
+    } catch (e) {
       toast.error('加载统计失败', { description: (e as Record<string, any>).message });
     } finally {
       setStatsLoading(false);
@@ -76,7 +73,7 @@ export function CloudBilling() {
       if (filterEnd) params.end_date = filterEnd;
       const res = await billingApi.list(params);
       setRecords(res.list || []);
-    } catch (e: any) {
+    } catch (e) {
       toast.error('加载账单失败', { description: (e as Record<string, any>).message });
     } finally {
       setRecordsLoading(false);
@@ -88,7 +85,7 @@ export function CloudBilling() {
     try {
       const res = await billingApi.listAlertRules();
       setRules(res.list || []);
-    } catch (e: any) {
+    } catch (e) {
       toast.error('加载预警规则失败', { description: (e as Record<string, any>).message });
     } finally {
       setRulesLoading(false);
@@ -135,7 +132,7 @@ export function CloudBilling() {
       loadRecords();
       loadStats();
       toast('删除成功');
-    } catch (e: any) {
+    } catch (e) {
       toast.error('删除失败', { description: (e as Record<string, any>).message });
     }
   };
@@ -147,7 +144,7 @@ export function CloudBilling() {
       await billingApi.deleteAlertRule(id);
       loadRules();
       toast('删除成功');
-    } catch (e: any) {
+    } catch (e) {
       toast.error('删除失败', { description: (e as Record<string, any>).message });
     }
   };
@@ -157,7 +154,7 @@ export function CloudBilling() {
       await billingApi.toggleAlertRule(id);
       loadRules();
       loadStats();
-    } catch (e: any) {
+    } catch (e) {
       toast.error('操作失败', { description: (e as Record<string, any>).message });
     }
   };