Add simplified Open Practice flow and reorganize

tests/race_timing_logic.test.js

@@ -3,10 +3,12 @@ import assert from "node:assert/strict";
 
 import {
   applyBumpsForRace,
+  buildOpenPracticeBundle,
   buildRaceFormatConfigFromForm,
   buildRaceSessionsFromWizard,
   generateFinalsForRace,
   generateQualifyingForRace,
+  normalizeEvent,
   reseedUpcomingQualifying,
 } from "../src/event_race_logic.js";
 import {
@@ -91,6 +93,46 @@ test("race format form normalizes limits and preserves participants and teams",
   assert.deepEqual(config.teams, [{ id: "team_1", name: "Red" }]);
 });
 
+test("open practice bundle is untimed, unrestricted, and independent of race presets", () => {
+  const uid = createUid();
+  const bundle = buildOpenPracticeBundle(
+    { name: "Friday Practice", date: "2026-08-24" },
+    {
+      uid,
+      normalizeEvent: (event) => ({ ...event, raceConfig: { presetId: "club_qualifying", driverIds: ["old"] } }),
+      buildRaceSession: (eventId, name, type, durationMin, overrides) => ({ eventId, name, type, durationMin, ...overrides }),
+    }
+  );
+
+  assert.equal(bundle.event.name, "Friday Practice");
+  assert.equal(bundle.event.classId, "");
+  assert.equal(bundle.event.mode, "race");
+  assert.equal(bundle.event.raceConfig.presetId, "custom");
+  assert.equal(bundle.event.raceConfig.practiceOnly, true);
+  assert.equal(bundle.event.raceConfig.participantsConfigured, false);
+  assert.deepEqual(bundle.event.raceConfig.driverIds, []);
+  assert.equal(bundle.session.eventId, bundle.event.id);
+  assert.equal(bundle.session.type, "open_practice");
+  assert.equal(bundle.session.startMode, "mass");
+  assert.equal(bundle.session.followUpSec, 0);
+  assert.deepEqual(bundle.session.driverIds, []);
+  assert.equal(isUntimedSession(bundle.session), true);
+});
+
+test("event normalization preserves the practice-only marker", () => {
+  const event = normalizeEvent(
+    { id: "event_1", raceConfig: { practiceOnly: true } },
+    {
+      normalizeBrandingConfig: (branding) => branding || {},
+      normalizeStartMode,
+      normalizeRaceTeam: (team) => team,
+    }
+  );
+
+  assert.equal(event.raceConfig.practiceOnly, true);
+  assert.equal(event.raceConfig.presetId, "custom");
+});
+
 test("race wizard creates configured practice, qualifying, and endurance sessions", () => {
   const event = {
     id: "event_1",