Dual device on weekend feature

frontend/src/App.jsx

@@ -37,6 +37,33 @@ function addDays(date, n) {
   return d
 }
 
+function parseHolidayDates(raw = '') {
+  return new Set(
+    String(raw)
+      .split(',')
+      .map((token) => token.trim())
+      .filter(Boolean),
+  )
+}
+
+function isOffDay(date, holidaySet) {
+  const weekday = date.getDay()
+  if (weekday === 0 || weekday === 6) return true
+  return holidaySet.has(toKey(date))
+}
+
+function getWeekendStartDatesForWeek(weekStart, holidaySet) {
+  const dates = []
+  for (let offset = 0; offset < 7; offset += 1) {
+    const current = addDays(weekStart, offset)
+    const nextDay = addDays(current, 1)
+    if (!isOffDay(current, holidaySet) && isOffDay(nextDay, holidaySet)) {
+      dates.push(toKey(current))
+    }
+  }
+  return dates
+}
+
 function getTonightWindowKeys() {
   const now = new Date()
   const hour = now.getHours()
@@ -120,7 +147,7 @@ function sanitizeSettings(saved = {}) {
 export default function App() {
   const [settingsOpen,   setSettingsOpen]   = useState(false)
   const [settings,       setSettings]       = useState(DEFAULT_SETTINGS)
-  const [daytimeEnabled, setDaytimeEnabled] = useState(false)
+  const [dualDeviceWeekendWeekSelections, setDualDeviceWeekendWeekSelections] = useState({})
   const [topPriority,    setTopPriority]    = useState('')
   const [lowestPriority, setLowestPriority] = useState('')
   const [startDateOverride, setStartDateOverride] = useState('')
@@ -148,6 +175,13 @@ export default function App() {
     () => scheduleWindows.find((windowDetails) => windowDetails.window_id === selectedWindowId) ?? null,
     [scheduleWindows, selectedWindowId],
   )
+  const holidaySet = useMemo(() => parseHolidayDates(settings.holidays), [settings.holidays])
+  const activeWeekKey = useMemo(() => toKey(weekStart), [weekStart])
+  const dualDeviceWeekendWeekEnabled = Boolean(dualDeviceWeekendWeekSelections[activeWeekKey])
+  const dualDeviceWindowStartDates = useMemo(() => {
+    if (!dualDeviceWeekendWeekEnabled) return []
+    return getWeekendStartDatesForWeek(weekStart, holidaySet)
+  }, [dualDeviceWeekendWeekEnabled, weekStart, holidaySet])
 
   // Fetch schedule for the given weekStart (Monday)
   const fetchSchedule = useCallback(async (start) => {
@@ -245,7 +279,7 @@ export default function App() {
       const effectiveStartDate = startDateOverride.trim()
       const result = await api.compileSchedule({
         start_date: effectiveStartDate || null,
-        daytime_testing_today: daytimeEnabled,
+        dual_device_weekend_start_dates: dualDeviceWindowStartDates,
         top_priority_tests: topPriority.split(',').map(s => s.trim()).filter(Boolean),
         lowest_priority_tests: lowestPriority.split(',').map(s => s.trim()).filter(Boolean),
         rule: settings.testExclusion ?? '',
@@ -273,17 +307,13 @@ export default function App() {
     }
   }
 
-  function handleRerunDecision(rerunDuringDay) {
-    const rerunIds = failedTests.map(t => t.test_id).join(', ')
+  function handleRerunDecision(_rerunDuringDay) {
     setTopPriority(prev => {
       const existing = prev.split(',').map(s => s.trim()).filter(Boolean)
       const incoming = failedTests.map(t => t.test_id)
       const merged = [...new Set([...existing, ...incoming])]
       return merged.join(', ')
     })
-    if (rerunDuringDay) {
-      setDaytimeEnabled(true)
-    }
     setFailedTests([])
   }
 
@@ -323,9 +353,16 @@ export default function App() {
         <div className="flex-1 min-w-0 flex flex-col">
           <Calendar
             scheduleData={scheduleData}
-            daytimeDateKey={daytimeEnabled ? toKey(new Date()) : null}
+            daytimeDateKey={null}
             weekStart={weekStart}
             onWeekChange={setWeekStart}
+            dualDeviceWeekendWeekEnabled={dualDeviceWeekendWeekEnabled}
+            onDualDeviceWeekendWeekEnabledChange={(enabled) => {
+              setDualDeviceWeekendWeekSelections((prev) => ({
+                ...prev,
+                [activeWeekKey]: enabled,
+              }))
+            }}
             windowLookup={windowLookup}
             onWindowSelect={handleWindowSelect}
           />
@@ -335,8 +372,6 @@ export default function App() {
           completionDate={completionDate}
           startDateOverride={startDateOverride}
           onStartDateOverrideChange={setStartDateOverride}
-          daytimeEnabled={daytimeEnabled}
-          onDaytimeEnabledChange={setDaytimeEnabled}
           topPriority={topPriority}
           onTopPriorityChange={setTopPriority}
           lowestPriority={lowestPriority}

frontend/src/components/Calendar.jsx

@@ -53,6 +53,8 @@ export default function Calendar({
   daytimeDateKey = null,
   weekStart,
   onWeekChange,
+  dualDeviceWeekendWeekEnabled = false,
+  onDualDeviceWeekendWeekEnabledChange,
   windowLookup = new Map(),
   onWindowSelect,
 }) {
@@ -111,6 +113,25 @@ export default function Calendar({
         >
           Today
         </button>
+        <div className="ml-auto flex items-center gap-2 text-xs text-gray-300 select-none">
+          <span>Run both devices on weekend this week</span>
+          <button
+            type="button"
+            role="switch"
+            aria-checked={dualDeviceWeekendWeekEnabled}
+            onClick={() => onDualDeviceWeekendWeekEnabledChange?.(!dualDeviceWeekendWeekEnabled)}
+            className={`relative inline-flex h-5 w-9 shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors focus:outline-none focus:ring-2 focus:ring-blue-500/70 ${
+              dualDeviceWeekendWeekEnabled ? 'bg-blue-600' : 'bg-gray-600'
+            }`}
+            title="Toggle dual-device weekend-start scheduling for this week"
+          >
+            <span
+              className={`pointer-events-none inline-block h-4 w-4 rounded-full bg-white shadow transform transition-transform ${
+                dualDeviceWeekendWeekEnabled ? 'translate-x-4' : 'translate-x-0'
+              }`}
+            />
+          </button>
+        </div>
       </div>
 
       {/* 7-day grid */}

frontend/src/components/RightPanel.jsx

@@ -16,8 +16,6 @@ export default function RightPanel({
   completionDate,
   startDateOverride,
   onStartDateOverrideChange,
-  daytimeEnabled,
-  onDaytimeEnabledChange,
   topPriority,
   onTopPriorityChange,
   lowestPriority,
@@ -40,29 +38,6 @@ export default function RightPanel({
         </p>
       </div>
 
-      {/* Daytime testing toggle */}
-      <div>
-        <div className="flex items-center justify-between">
-          <p className="text-[11px] font-semibold uppercase tracking-wider text-gray-500">
-            Day Time Testing (Today)
-          </p>
-          <button
-            role="switch"
-            aria-checked={daytimeEnabled}
-            onClick={() => onDaytimeEnabledChange(!daytimeEnabled)}
-            className={`relative inline-flex h-5 w-9 shrink-0 cursor-pointer rounded-full border-2 border-transparent transition-colors ${
-              daytimeEnabled ? 'bg-blue-600' : 'bg-gray-600'
-            }`}
-          >
-            <span
-              className={`pointer-events-none inline-block h-4 w-4 rounded-full bg-white shadow transform transition-transform ${
-                daytimeEnabled ? 'translate-x-4' : 'translate-x-0'
-              }`}
-            />
-          </button>
-        </div>
-      </div>
-
       {/* Top priority */}
       <div>
         <label className="block text-[11px] font-semibold uppercase tracking-wider text-gray-500 mb-1.5">