fix: 补充 wire_gen_test.go 中 provideCleanup 缺少的 backupSvc 参数

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/cmd/server/wire_gen_test.go

@@ -75,6 +75,7 @@ func TestProvideCleanup_WithMinimalDependencies_NoPanic(t *testing.T) {
 		antigravityOAuthSvc,
 		nil, // openAIGateway
 		nil, // scheduledTestRunner
+		nil, // backupSvc
 	)
 
 	require.NotPanics(t, func() {