fix: 诊断统计里选实验还没到的轮次不再写成不做（任务书 18 第三块）

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

eval/diagnosis/stats.ts

@@ -300,7 +300,7 @@ for (const s of summaries) {
   );
   for (const r of a.diagnosisRounds) {
     text.push(
-      `${r.round} | ${r.balanceBefore} | ${r.expectedDiagnosis ? (r.diagnosed ? "做" : "不做") : "无（余额<2）"} | ${r.chosen.join(",") || "—"} | ${r.verificationCount} | ${r.repairCount} | ${r.droppedCount} | ${r.ranCount} | ${r.charged} | ${r.predictionBeforeStart === null ? "—" : r.predictionBeforeStart ? "是" : "否"} | ${r.settlementCount}`,
+      `${r.round} | ${r.balanceBefore} | ${r.expectedDiagnosis ? (r.diagnosed ? "做" : r.selectDecided ? "不做" : "还没到选实验") : "无（余额<2）"} | ${r.chosen.join(",") || "—"} | ${r.verificationCount} | ${r.repairCount} | ${r.droppedCount} | ${r.ranCount} | ${r.charged} | ${r.predictionBeforeStart === null ? "—" : r.predictionBeforeStart ? "是" : "否"} | ${r.settlementCount}`,
     );
   }
   text.push(
@@ -379,7 +379,7 @@ for (const s of summaries) {
   for (const r of a.rounds) {
     const dRound = a.diagnosisRounds.find((x) => x.round === r.round)!;
     text.push(
-      `第 ${r.round} 轮（基线 ${r.baseline}）：诊断${dRound.diagnosed ? `做了，${dRound.ranCount} 个实验` : dRound.expectedDiagnosis ? "没做（净值不大于 0）" : "没有（余额<2）"}；采纳 ${r.adopted ?? "没有"}${r.adoptedScore === null ? "" : `，分数 ${f(r.adoptedScore)}，离已知最好 ${f(r.knownBestGap)}`}`,
+      `第 ${r.round} 轮（基线 ${r.baseline}）：诊断${dRound.diagnosed ? `做了，${dRound.ranCount} 个实验` : dRound.expectedDiagnosis ? (dRound.selectDecided ? "没做（净值不大于 0）" : "还没到选实验") : "没有（余额<2）"}；采纳 ${r.adopted ?? "没有"}${r.adoptedScore === null ? "" : `，分数 ${f(r.adoptedScore)}，离已知最好 ${f(r.knownBestGap)}`}`,
       ...r.candidates.map(
         (c) =>
           `  候选 ${c.candidate}：实测 ${f(c.score)}，合并 ${range(c.merged)}，落点 ${c.band ?? "—"}，作者自评 ${c.authorEstimates.map((u) => `${u.author} ${range(u.range)}`).join("、") || "—"}${c.notRunEvents.length > 0 ? "，不跑：" + c.notRunEvents[0]!.reason : ""}`,

eval/lib/diagnosis.ts

@@ -250,6 +250,7 @@ export function diagnosisAccounts(records: LedgerRecord[]) {
       balanceBefore,
       expectedDiagnosis: balanceBefore >= 2,
       anyDiagnosisRecord,
+      selectDecided: select !== null,
       diagnosed: select?.output.diagnose ?? false,
       chosen: select?.output.chosen ?? [],
       chosenNet: select?.output.chosenNet ?? null,