test(app): pin display withholding parity with MEASURED_POWER_METRIC_KEYS | 测试：前端展示层扣留逻辑与 MEASURED_POWER_METRIC_KEYS 保持一致

Drive rowToAggDataEntry with a power_valid=0 row carrying every key in
the shared constant and assert each corresponding output field (and
workers) comes back undefined — adding a key to the constant that the
frontend forgets to withhold now fails this test. The reverse direction
(frontend withholding a key missing from the constant) stays
hand-audited, as noted in the test comment.

以携带共享常量中全部键的 power_valid=0 行驱动 rowToAggDataEntry，断言
对应输出字段（含 workers）均为 undefined —— 若向常量新增了前端未扣留的
键，此测试即失败。反向情况（前端扣留了常量之外的键）仍由人工审计，测试
注释中已注明。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: Wenyao Gao

packages/app/src/lib/benchmark-transform.test.ts

@@ -1,3 +1,4 @@
+import { MEASURED_POWER_METRIC_KEYS } from '@semianalysisai/inferencex-constants';
 import { describe, it, expect, vi } from 'vitest';
 
 import { getPointLabel } from '@/components/inference/utils/tooltipUtils';
@@ -424,6 +425,28 @@ describe('rowToAggDataEntry', () => {
     expect(point.measuredPowerPercentTdp).toBeUndefined();
   });
 
+  it('withholds every MEASURED_POWER_METRIC_KEYS field when power_valid=0 (ETL parity)', () => {
+    // Parity with the ingest scrub (benchmark-mapper.ts
+    // scrubWithheldPowerMetrics): the shared constant is the single source of
+    // truth for the withheld set, so a key added there without a matching
+    // display-layer withholding fails here. The reverse direction — the
+    // display layer withholding a key missing from the constant — stays
+    // hand-audited.
+    const metrics: BenchmarkRow['metrics'] = { power_valid: 0 };
+    for (const key of MEASURED_POWER_METRIC_KEYS) metrics[key] = 123.45;
+    const entry = rowToAggDataEntry(
+      makeRow({
+        metrics,
+        workers: [{ role: 'agg', worker_idx: 0, num_gpus: 8, avg_power_w: 123.45 }],
+      }),
+    );
+
+    for (const key of MEASURED_POWER_METRIC_KEYS) {
+      expect((entry as unknown as Record<string, unknown>)[key]).toBeUndefined();
+    }
+    expect(entry.workers).toBeUndefined();
+  });
+
   it('keeps measured telemetry compatible when a legacy row omits power_valid', () => {
     const workers = [{ role: 'agg', worker_idx: 0, num_gpus: 8, avg_power_w: 560 }];
     const row = makeRow({