fix(ui): use effective pull date in colophon to avoid false pull overdue diagnoses

Derive source pull date from confirmation and recent content updates, preventing recently updated sources from displaying as pulled never or pull overdue.

test/custom-ui.test.tsx

@@ -304,6 +304,44 @@ describe("Colophon freshness notice (PRD F7)", () => {
     expect(html).toContain("site has no new updates");
   });
 
+  test("source breakdown does not report recent content updates as pulled never or overdue", () => {
+    const PULL_TIME = new Date(NOW - 11 * HOUR).toISOString();
+    const OLD_SITE = new Date(NOW - 57 * HOUR).toISOString();
+    const RECENT_CONTENT = new Date(NOW - 1 * HOUR).toISOString();
+    const html = renderToStaticMarkup(
+      <Colophon
+        sources={[
+          fresh,
+          {
+            ...fresh,
+            sourceId: "endfield-wikigg-events",
+            game: "endfield",
+            url: "https://endfield.wiki.gg/wiki/Event",
+            lastSuccessAt: OLD_SITE,
+            lastConfirmedAt: PULL_TIME,
+            contentChangedAt: OLD_SITE,
+          },
+          {
+            ...fresh,
+            sourceId: "endfield-game8-events",
+            game: "endfield",
+            url: "https://game8.co/games/Arknights-Endfield/archives/535443",
+            lastSuccessAt: RECENT_CONTENT,
+            lastConfirmedAt: null,
+            contentChangedAt: RECENT_CONTENT,
+          },
+        ]}
+        now={NOW}
+      />,
+    );
+    expect(html).toContain("Arknights: Endfield");
+    expect(html).toContain("data pulled 11h 0m ago, site updated 2d 9h ago");
+    expect(html).toContain("Game8");
+    expect(html).toContain("pulled 1h 0m ago, site updated 1h 0m ago (up to date)");
+    expect(html).not.toContain("pulled never");
+    expect(html).not.toContain("pull overdue");
+  });
+
   test("summarises instead of listing when every game is behind", () => {
     // What a refresh that stopped running looks like. Ten names each repeating
     // the same age is less readable than the count this replaced.