Add regression test: a DNS heat must not drop a driver's other heats

The user asked specifically to confirm this: a driver who DNS'd in one
qualifying heat but raced normally in others must still be fully
counted across all of them, not dropped. Traced through the fix
(buildQualifyingStandings backfills a DNS row per finished heat,
accumulating into the same per-driver entry across every heat they're
in) and confirmed it already handles this correctly - added a test
that exercises exactly this scenario (DNS in heat 1, wins heat 2 and
3) to lock it in, since this specific multi-heat aggregation path had
no prior coverage.

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

tests/race_timing_logic.test.js

@@ -657,6 +657,50 @@ test("qualifying standings keep a driver who never recorded a passing (DNS) so t
   assert.equal(standings[1].bestSingleLapMs, Number.MAX_SAFE_INTEGER, "a DNS driver's missing lap is never confused for a 0ms fastest lap");
 });
 
+test("a driver who DNS'd in one heat but raced normally in the others is still fully counted across all of them, not dropped", () => {
+  const sessions = [
+    { id: "q1h1", type: "qualification", name: "Q1 H1", status: "finished" },
+    { id: "q2h1", type: "qualification", name: "Q2 H1", status: "finished" },
+    { id: "q3h1", type: "qualification", name: "Q3 H1", status: "finished" },
+  ];
+  // driver_2 DNS'd heat 1 (dead battery), but raced - and won - heats 2 and 3.
+  const rowsBySession = {
+    q1h1: [{ driverId: "driver_1", driverName: "One", comparisonMs: 16000, bestLapMs: 16000, resultDisplay: "16.000" }],
+    q2h1: [
+      { driverId: "driver_2", driverName: "Two", comparisonMs: 15000, bestLapMs: 15000, resultDisplay: "15.000" },
+      { driverId: "driver_1", driverName: "One", comparisonMs: 16500, bestLapMs: 16500, resultDisplay: "16.500" },
+    ],
+    q3h1: [
+      { driverId: "driver_2", driverName: "Two", comparisonMs: 14800, bestLapMs: 14800, resultDisplay: "14.800" },
+      { driverId: "driver_1", driverName: "One", comparisonMs: 16200, bestLapMs: 16200, resultDisplay: "16.200" },
+    ],
+  };
+  const entrants = [{ id: "driver_1", name: "One" }, { id: "driver_2", name: "Two" }];
+  const standings = buildQualifyingStandings(
+    // Counting all 3 rounds (not just the best one) so a dropped round would be visible
+    // in the total score, not silently hidden by "best of N" already excluding it.
+    { id: "event_1", raceConfig: { countedQualRounds: 3 } },
+    {
+      getSessionsForEvent: () => sessions,
+      buildLeaderboard: (session) => rowsBySession[session.id],
+      getSessionEntrants: () => entrants,
+      isHighPointsTable,
+      getQualifyingPointsValue,
+      compareNumberSet,
+      buildQualifyingTieBreakNote: (row, tieBreak) => buildQualifyingTieBreakNoteLogic(row, tieBreak, { t: testTranslate, formatLap: testFormatLap }),
+      formatLap: testFormatLap,
+      formatRaceClock: testFormatRaceClock,
+      t: testTranslate,
+      hasQualifyingPrimaryTie,
+    }
+  );
+
+  const driverTwo = standings.find((row) => row.driverId === "driver_2");
+  assert.ok(driverTwo, "driver_2 still appears at all - not dropped because of the heat 1 DNS");
+  assert.deepEqual(driverTwo.ranks.sort((a, b) => a - b), [1, 1, 2], "won heat 2 and heat 3 outright (rank 1), only heat 1's DNS counts against them (rank 2 of 2)");
+  assert.equal(driverTwo.countedPoints.length, 3, "all three heats count toward the score, including the DNS one - it isn't excluded or silently skipped");
+});
+
 test("session channel statistics summarize splits and pit stops per competitor", () => {
   const result = {
     competitors: {