Label native result observation times accurately

apps/presentation/dashboard/src/features/personal-workspace/goal-research-progress.tsx

@@ -187,7 +187,7 @@ function NativeResults({native, zh, onCitation}: {native: ResearchProgressPack["
         <div><dt>{zh ? "来源" : "Source"}</dt><dd>{native.artifact}<br/><code>{native.artifact_sha256}</code></dd></div></dl>
       <dl>{points.map(([key, cn, en]) => {
         const point = outcomes[key];
-        return point ? <div key={key}><dt>{zh ? cn : en}</dt><dd>{String(point.value)} {outcomes.metric.unit}<br/><code>{point.candidate_ref}</code><br/>{zh ? "提交" : "Submission"} {point.submission_index} · {zh ? "提交时间" : "Submitted at"}: {point.submitted_at ?? (zh ? "未知" : "Unknown")}<br/>{zh ? "收到结果" : "Result received"}: {point.observed_at}</dd></div> : null;
+        return point ? <div key={key}><dt>{zh ? cn : en}</dt><dd>{String(point.value)} {outcomes.metric.unit}<br/><code>{point.candidate_ref}</code><br/>{zh ? "提交" : "Submission"} {point.submission_index} · {zh ? "提交时间" : "Submitted at"}: {point.submitted_at ?? (zh ? "未知" : "Unknown")}<br/>{zh ? "观测时间" : "Observed at"}: <time dateTime={point.observed_at}>{point.observed_at}</time></dd></div> : null;
       })}</dl>
       <ul>{outcomes.limitations.map((line, i) => <li key={i}>{line}</li>)}</ul>
     </details></div>

examples/personal-workspace-browser/research-native-reading.mjs

@@ -142,6 +142,12 @@ export const researchNativeReadingScenario = {
         assert.match(await native.locator(".research-native-best .research-native-unit").textContent(), new RegExp(c.unit ?? "points"), "The raw unit remains visible even when no valid measurement exists");
         assert.match(await native.locator(".research-native-scope").innerText(), new RegExp(`${c.values.filter(v => v !== null).length} / ${c.values.length}.*有效结果`));
         if (c.partial) assert.match(await native.innerText(), /部分窗口 · 起点未知/);
+        if (c.id === "partial") {
+          const sources = native.locator(".research-native-basis");
+          await sources.locator("summary").click();
+          assert.match(await sources.innerText(), /提交时间: 未知\s+观测时间: 2026-01-01T00:03:00Z/);
+          await sources.locator("summary").click();
+        }
         if (c.id === "invalid-first") {
           const measureUnknownRetention = () => native.evaluate(section => {
             const retained = section.querySelector('[data-native-point="retained"]');
@@ -267,6 +273,10 @@ export const researchNativeReadingScenario = {
       await selector.selectOption({label: "decimal"});
       await page.waitForFunction(() => document.querySelector('[data-native-point="best_valid"] strong')?.textContent === "0.8765");
       assert.equal(await page.locator("[data-retained-improvement]").textContent(), "+0.0642");
+      const sources = page.locator(".research-native-basis");
+      await sources.locator("summary").click();
+      assert.match(await sources.innerText(), /Submitted at: Unknown\s+Observed at: 2026-01-01T00:02:00Z/);
+      await sources.locator("summary").click();
       await page.getByRole("button", {name: "About native measurements", exact: true}).focus();
       await page.getByRole("tooltip").waitFor({state: "visible"});
       await page.keyboard.press("Escape");