Add moving a driver between qualifying heats

The user asked whether a lone driver left in the last heat (e.g. 7
drivers at 3 per heat) could be moved into another heat manually.
Investigated first: neither "Reseed" (redistributes every not-yet-run
heat by current standings, not a targeted move) nor the grid editor
(reorders start position within one heat, never moves a driver
between heats) could do this - there was genuinely no path to it.

moveDriversIntoQualifyingHeat (src/event_race_logic.js) adds the same
"checking them elsewhere is the move" pattern already used for team
rosters: a new driver checklist on the qualification session edit
form pulls a checked driver out of whichever other heat they're
currently on, scoped to the same round only ("Q2 H2" never touches
"Q1"/"Q3", since heat composition can legitimately differ round to
round after a reseed). The checklist names the driver's current heat
before saving, mirroring the team-roster warning.

Also confirmed, per the user's earlier questions, already correct
with no changes needed: practice's per-driver "best 3 laps"/"best
5-minute result" stats, and that heats are already seeded fastest-
first from practice results. Flagged one real, deliberately unbuilt
gap while investigating: a true per-driver rolling "5 minutes from
your own first crossing" qualifying *heat* clock isn't supported -
only the practice stats work that way today.

Verified with new unit tests for moveDriversIntoQualifyingHeat and
the extracted parseQualifyingHeatName helper, and a real headless-
browser run reproducing the exact reported scenario end to end
through the actual UI.

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

src/app.js

@@ -11,7 +11,7 @@ import { RACE_AUDIO_EVENT_DEFINITIONS, createRaceAudioEngine, normalizeRaceAudio
 
 import { renderRaceFormatField, renderRaceFormatContextCard, getRaceSummaryItems, getRaceSummaryWarnings, renderManageStatusBadge, renderRaceWizardSteps, renderRaceWizardContent, renderRaceStandingsTable } from "./race_setup_ui.js";
 
-import { normalizeRaceTeam as normalizeRaceTeamLogic, normalizeStoredRacePreset as normalizeStoredRacePresetLogic, getRaceFormatPresets as getRaceFormatPresetsLogic, applyRaceFormatPreset as applyRaceFormatPresetLogic, buildRaceFormatConfigFromForm as buildRaceFormatConfigFromFormLogic, normalizeEvent as normalizeEventLogic, normalizeBrandingConfig as normalizeBrandingConfigLogic, resolveEventBranding as resolveEventBrandingLogic, getRaceManageStatuses as getRaceManageStatusesLogic, buildDefaultRaceWizardDraft as buildDefaultRaceWizardDraftLogic, getRaceWizardPreset as getRaceWizardPresetLogic, applyRaceWizardPresetDefaults as applyRaceWizardPresetDefaultsLogic, ensureRaceParticipantsConfigured as ensureRaceParticipantsConfiguredLogic, buildRaceSession as buildRaceSessionLogic, buildOpenPracticeBundle as buildOpenPracticeBundleLogic, buildTrackSession as buildTrackSessionLogic, createSponsorRounds as createSponsorRoundsLogic, buildRaceSessionsFromWizard as buildRaceSessionsFromWizardLogic, getRaceWizardSessionPlan as getRaceWizardSessionPlanLogic, getEventDrivers as getEventDriversLogic, getEventTeams as getEventTeamsLogic, getTeamDriverPool as getTeamDriverPoolLogic, reassignTeamMembers as reassignTeamMembersLogic, findEventTeamForPassing as findEventTeamForPassingLogic, generateQualifyingForRace as generateQualifyingForRaceLogic, reseedUpcomingQualifying as reseedUpcomingQualifyingLogic, generateFinalsForRace as generateFinalsForRaceLogic, applyBumpsForRace as applyBumpsForRaceLogic } from "./event_race_logic.js";
+import { normalizeRaceTeam as normalizeRaceTeamLogic, normalizeStoredRacePreset as normalizeStoredRacePresetLogic, getRaceFormatPresets as getRaceFormatPresetsLogic, applyRaceFormatPreset as applyRaceFormatPresetLogic, buildRaceFormatConfigFromForm as buildRaceFormatConfigFromFormLogic, normalizeEvent as normalizeEventLogic, normalizeBrandingConfig as normalizeBrandingConfigLogic, resolveEventBranding as resolveEventBrandingLogic, getRaceManageStatuses as getRaceManageStatusesLogic, buildDefaultRaceWizardDraft as buildDefaultRaceWizardDraftLogic, getRaceWizardPreset as getRaceWizardPresetLogic, applyRaceWizardPresetDefaults as applyRaceWizardPresetDefaultsLogic, ensureRaceParticipantsConfigured as ensureRaceParticipantsConfiguredLogic, buildRaceSession as buildRaceSessionLogic, buildOpenPracticeBundle as buildOpenPracticeBundleLogic, buildTrackSession as buildTrackSessionLogic, createSponsorRounds as createSponsorRoundsLogic, buildRaceSessionsFromWizard as buildRaceSessionsFromWizardLogic, getRaceWizardSessionPlan as getRaceWizardSessionPlanLogic, getEventDrivers as getEventDriversLogic, getEventTeams as getEventTeamsLogic, getTeamDriverPool as getTeamDriverPoolLogic, reassignTeamMembers as reassignTeamMembersLogic, findEventTeamForPassing as findEventTeamForPassingLogic, generateQualifyingForRace as generateQualifyingForRaceLogic, reseedUpcomingQualifying as reseedUpcomingQualifyingLogic, moveDriversIntoQualifyingHeat as moveDriversIntoQualifyingHeatLogic, parseQualifyingHeatName as parseQualifyingHeatNameLogic, generateFinalsForRace as generateFinalsForRaceLogic, applyBumpsForRace as applyBumpsForRaceLogic } from "./event_race_logic.js";
 
 import { getSessionTypeLabel as getSessionTypeLabelLogic, getStatusLabel as getStatusLabelLogic, isUntimedSession as isUntimedSessionLogic, getActiveSession as getActiveSessionLogic, getSessionTargetMs as getSessionTargetMsLogic, getSessionLapWindow as getSessionLapWindowLogic, isCountedPassing as isCountedPassingLogic, getVisiblePassings as getVisiblePassingsLogic, getPassingValidationLabel as getPassingValidationLabelLogic, getSessionTiming as getSessionTimingLogic, ensureSessionResult as ensureSessionResultLogic, buildLeaderboard as buildLeaderboardLogic, formatLapDelta as formatLapDeltaLogic, formatLeaderboardGap as formatLeaderboardGapLogic, getCompetitorElapsedMs as getCompetitorElapsedMsLogic, getCompetitorPassings as getCompetitorPassingsLogic, getCompetitorSeedMetric as getCompetitorSeedMetricLogic, getSessionEntrants as getSessionEntrantsLogic, buildPracticeStandings as buildPracticeStandingsLogic, getQualifyingPointsValue as getQualifyingPointsValueLogic, isHighPointsTable as isHighPointsTableLogic, compareNumberSet as compareNumberSetLogic, buildQualifyingTieBreakNote as buildQualifyingTieBreakNoteLogic, hasQualifyingPrimaryTie as hasQualifyingPrimaryTieLogic, buildQualifyingStandings as buildQualifyingStandingsLogic, formatTeamActiveMemberLabel as formatTeamActiveMemberLabelLogic, buildTeamRaceStandings as buildTeamRaceStandingsLogic, buildSessionChannelStats as buildSessionChannelStatsLogic, buildTeamStintLog as buildTeamStintLogLogic, getSessionGridEntries as getSessionGridEntriesLogic, getSessionGridOrder as getSessionGridOrderLogic, ensureSessionDriverOrder as ensureSessionDriverOrderLogic, buildFinalStandings as buildFinalStandingsLogic, getTrackRecordMs as getTrackRecordMsLogic } from "./timing_logic.js";
 import { normalizeTrackLayouts, getTrackLayoutIdAt, getTrackLayoutLabel, nextTrackLayoutLabel } from "./track_layouts_logic.js";
@@ -73,6 +73,8 @@ const getEventDrivers = (event) => getEventDriversLogic(event, { state });
 const getEventTeams = (event) => getEventTeamsLogic(event, { normalizeRaceTeam });
 const getTeamDriverPool = (event) => getTeamDriverPoolLogic(event, { getEventDrivers, state });
 const reassignTeamMembers = (teams, options) => reassignTeamMembersLogic(teams, options);
+const moveDriversIntoQualifyingHeat = (targetSessionId, driverIds) => moveDriversIntoQualifyingHeatLogic(state.sessions, targetSessionId, driverIds);
+const parseQualifyingHeatName = (name) => parseQualifyingHeatNameLogic(name);
 const findEventTeamForPassing = (event, driverId, carId) => findEventTeamForPassingLogic(event, driverId, carId, { getEventTeams });
 const generateQualifyingForRace = (event) => generateQualifyingForRaceLogic(event, { buildPracticeStandings, getEventDrivers, state, normalizeStartMode, normalizeSession, uid, chunkArray, clearGeneratedQualifying });
 const reseedUpcomingQualifying = (event) => reseedUpcomingQualifyingLogic(event, { buildQualifyingStandings, buildPracticeStandings, getEventDrivers, getSessionsForEvent, chunkArray });
@@ -1169,6 +1171,9 @@ const TRANSLATIONS = {
     "events.team_form_cars": "Markera lagbilar innan du sparar laget.",
     "events.team_driver_fallback": "Inga förare matchade race-klassen eller deltagarlistan. Visar alla förare som fallback.",
     "events.team_member_elsewhere": "Redan i {team} - kryssar du i flyttas den hit",
+    "events.heat_drivers": "Förare i heatet",
+    "events.heat_drivers_hint": "Kryssa i/ur för att ändra vilka förare som kör det här heatet. En förare som redan är i ett annat heat i samma omgång flyttas hit automatiskt när du sparar.",
+    "events.heat_member_elsewhere": "Redan i {heat} - kryssar du i flyttas den hit",
     "events.no_teams": "Inga lag skapade ännu.",
     "events.team_standings": "Lagställning",
     "events.no_team_results": "Inga teamresultat ännu.",
@@ -2677,6 +2682,9 @@ const TRANSLATIONS = {
     "events.team_form_cars": "Select team cars before saving the team.",
     "events.team_driver_fallback": "No drivers matched the race class or participant list. Showing all drivers as fallback.",
     "events.team_member_elsewhere": "Already on {team} - checking this moves them here",
+    "events.heat_drivers": "Heat drivers",
+    "events.heat_drivers_hint": "Tick/untick to change who races this heat. A driver already on another heat in the same round is moved here automatically when you save.",
+    "events.heat_member_elsewhere": "Already on {heat} - checking this moves them here",
     "events.no_teams": "No teams created yet.",
     "events.team_standings": "Team standings",
     "events.no_team_results": "No team results yet.",
@@ -5022,6 +5030,8 @@ function renderEventManager(eventId) {
     getTeamDriverPool,
     getEventTeams,
     reassignTeamMembers,
+    moveDriversIntoQualifyingHeat,
+    parseQualifyingHeatName,
     normalizeBrandingConfig,
     getSessionTypeChoices,
     getRaceFormatPresets,