Fix schedule start date and timeline sort order

Agent-Logs-Url: https://github.com/h/CarReservation/sessions/47d2417d-06f8-4edb-95cc-c0d838df7be0

Co-authored-by: h <57948770+h@users.noreply.github.com>

backend/server.js

@@ -68,7 +68,6 @@ if (!carCols.includes('sort_order')) {
   db.exec('ALTER TABLE cars ADD COLUMN sort_order INTEGER DEFAULT 0');
   db.exec('UPDATE cars SET sort_order = id');
 }
-db.prepare("UPDATE cars SET tire_type = 'スタッドレス' WHERE tire_type = 'スタットレス'").run();
 
 // Migrate: add period fields to reservations if they don't exist yet
 const resCols = db.prepare("PRAGMA table_info(reservations)").all().map((c) => c.name);
@@ -100,17 +99,13 @@ function broadcast(message) {
   });
 }
 
-function normalizeTireType(value) {
-  return value === 'スタットレス' ? 'スタッドレス' : value;
-}
-
+// for future use
 function normalizeCar(car) {
   if (!car) {
     return car;
   }
   return {
     ...car,
-    tire_type: normalizeTireType(car.tire_type),
   };
 }
 

frontend/src/components/CarManagement.jsx

@@ -1,4 +1,4 @@
-import { useState, useEffect, useCallback } from 'react';
+import { useState, useEffect, useCallback, useRef } from 'react';
 import { api } from '../api.js';
 import { isInspectionExpirySoon } from '../utils/carUtils.js';
 import styles from './CarManagement.module.css';
@@ -20,6 +20,8 @@ export default function CarManagement({ reloadKey = 0 }) {
   const [editEtc, setEditEtc] = useState(false);
   const [editTire, setEditTire] = useState('ノーマル');
   const [submitting, setSubmitting] = useState(false);
+  const [dragOverIdx, setDragOverIdx] = useState(null);
+  const dragSrcIdx = useRef(null);
 
   const loadCars = useCallback(async () => {
     try {
@@ -116,11 +118,7 @@ export default function CarManagement({ reloadKey = 0 }) {
     }
   };
 
-  const handleReorder = async (index, direction) => {
-    const newCars = [...cars];
-    const swapIndex = index + direction;
-    if (swapIndex < 0 || swapIndex >= newCars.length) return;
-    [newCars[index], newCars[swapIndex]] = [newCars[swapIndex], newCars[index]];
+  const applyReorder = async (newCars) => {
     setCars(newCars);
     try {
       await api.reorderCars(newCars.map((c) => c.id));
@@ -130,6 +128,40 @@ export default function CarManagement({ reloadKey = 0 }) {
     }
   };
 
+  const handleReorder = async (index, direction) => {
+    const swapIndex = index + direction;
+    if (swapIndex < 0 || swapIndex >= cars.length) return;
+    const newCars = [...cars];
+    [newCars[index], newCars[swapIndex]] = [newCars[swapIndex], newCars[index]];
+    await applyReorder(newCars);
+  };
+
+  const handleDragStart = (index) => {
+    dragSrcIdx.current = index;
+  };
+
+  const handleDragOver = (e, index) => {
+    e.preventDefault();
+    setDragOverIdx(index);
+  };
+
+  const handleDragEnd = () => {
+    setDragOverIdx(null);
+    dragSrcIdx.current = null;
+  };
+
+  const handleDrop = async (e, dropIndex) => {
+    e.preventDefault();
+    const srcIndex = dragSrcIdx.current;
+    setDragOverIdx(null);
+    dragSrcIdx.current = null;
+    if (srcIndex === null || srcIndex === dropIndex) return;
+    const newCars = [...cars];
+    const [moved] = newCars.splice(srcIndex, 1);
+    newCars.splice(dropIndex, 0, moved);
+    await applyReorder(newCars);
+  };
+
   return (
     <div className={styles.container}>
       <h2 className={styles.heading}>代車管理</h2>
@@ -217,7 +249,15 @@ export default function CarManagement({ reloadKey = 0 }) {
                 </tr>
               )}
               {cars.map((car, carIdx) => (
-                <tr key={car.id}>
+                <tr
+                  key={car.id}
+                  draggable
+                  onDragStart={() => handleDragStart(carIdx)}
+                  onDragOver={(e) => handleDragOver(e, carIdx)}
+                  onDragEnd={handleDragEnd}
+                  onDrop={(e) => handleDrop(e, carIdx)}
+                  className={dragOverIdx === carIdx ? styles.dragOver : ''}
+                >
                   <td className={styles.idCell}>
                     <div className={styles.orderBtns}>
                       <button

frontend/src/components/CarManagement.module.css

@@ -111,6 +111,16 @@
   background: #fafafa;
 }
 
+.table tbody tr[draggable] {
+  cursor: grab;
+}
+
+.dragOver {
+  background: #eff6ff !important;
+  outline: 2px dashed #1a56db;
+  outline-offset: -2px;
+}
+
 .idCell {
   color: #9ca3af;
   width: 80px;

frontend/src/components/ScheduleView.jsx

@@ -1,16 +1,17 @@
 import { useState, useEffect, useRef, useCallback } from 'react';
-import { format, addDays, startOfWeek, parseISO, differenceInDays, isSameDay } from 'date-fns';
+import { format, addDays, parseISO, differenceInDays } from 'date-fns';
 import { ja } from 'date-fns/locale';
 import { api } from '../api.js';
 import { isInspectionExpirySoon, formatDateRange, formatReservationTooltip } from '../utils/carUtils.js';
 import ReservationModal from './ReservationModal.jsx';
 import styles from './ScheduleView.module.css';
 
-const CELL_WIDTH = 52; // px per day column
+const CELL_WIDTH = 52; // px per half-day slot (午前 or 午後)
 const ROW_HEIGHT = 64; // px per car row
 const LABEL_WIDTH = 140; // px for car name column
-const HEADER_HEIGHT = 72; // px for the date header row
+const HEADER_HEIGHT = 80; // px for the date header row (top: date+dow, bottom: 午前/午後)
 const DAYS_SHOWN = 21; // number of days to show
+const HALF_SLOTS = DAYS_SHOWN * 2; // total half-day slot columns (AM + PM per day)
 
 // Detect touch-primary device to disable mouse-only drag & drop
 const isTouchDevice = typeof window !== 'undefined' &&
@@ -42,10 +43,8 @@ export default function ScheduleView({ reloadKey = 0 }) {
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState(null);
 
-  // The first date shown in the grid
-  const [viewStart, setViewStart] = useState(() =>
-    startOfWeek(new Date(), { weekStartsOn: 1 })
-  );
+  // The first date shown in the grid (start from today)
+  const [viewStart, setViewStart] = useState(() => new Date());
 
   // Drag-to-create state
   const [creating, setCreating] = useState(null);
@@ -91,17 +90,18 @@ export default function ScheduleView({ reloadKey = 0 }) {
   // --- Navigation ---
   const prevWeek = () => setViewStart((d) => addDays(d, -7));
   const nextWeek = () => setViewStart((d) => addDays(d, 7));
-  const goToday = () => setViewStart(startOfWeek(new Date(), { weekStartsOn: 1 }));
+  const goToday = () => setViewStart(new Date());
 
   // --- Grid position helpers ---
-  // Given a mouse clientX within the grid scroll area, get the day index (0-based)
-  const getColFromX = useCallback((clientX) => {
+  // Given a mouse clientX within the grid scroll area, get the half-day slot index (0-based)
+  // Each slot is CELL_WIDTH wide; even slots = 午前, odd slots = 午後
+  const getSlotFromX = useCallback((clientX) => {
     if (!gridRef.current) return -1;
     const rect = gridRef.current.getBoundingClientRect();
     const scrollLeft = gridRef.current.scrollLeft;
     const x = clientX - rect.left + scrollLeft - LABEL_WIDTH;
     if (x < 0) return -1;
-    return Math.floor(x / CELL_WIDTH);
+    return Math.min(Math.floor(x / CELL_WIDTH), HALF_SLOTS - 1);
   }, []);
 
   const getRowFromY = useCallback((clientY) => {
@@ -114,59 +114,62 @@ export default function ScheduleView({ reloadKey = 0 }) {
   }, []);
 
   // --- Cell drag to create ---
-  const handleCellMouseDown = (e, carId, dateStr) => {
+  const handleCellMouseDown = (e, carId, slot) => {
     if (isTouchDevice) return; // drag-to-create is mouse-only
     if (e.button !== 0) return;
     e.preventDefault();
-    setCreating({ carId, startDateStr: dateStr, endDateStr: dateStr });
+    setCreating({ carId, startSlot: slot, endSlot: slot });
   };
 
   // --- Cell tap to create (touch devices) ---
   const handleCellClick = useCallback((e, carId) => {
     if (!isTouchDevice) return;
-    const col = getColFromX(e.clientX);
-    if (col >= 0 && col < DAYS_SHOWN) {
-      const dateStr = dateToStr(dates[col]);
+    const slot = getSlotFromX(e.clientX);
+    if (slot >= 0 && slot < HALF_SLOTS) {
+      const dayIdx = Math.floor(slot / 2);
+      const dateStr = dateToStr(dates[dayIdx]);
+      const period = slot % 2 === 0 ? '午前' : '午後';
       setModal({
         mode: 'create',
-        prefill: { car_id: carId, start_date: dateStr, end_date: dateStr },
+        prefill: { car_id: carId, start_date: dateStr, start_period: period, end_date: dateStr, end_period: period },
       });
     }
-  }, [dates, getColFromX]);
+  }, [dates, getSlotFromX]);
 
   const handleGridMouseMove = useCallback((e) => {
     if (creating) {
-      const col = getColFromX(e.clientX);
-      if (col >= 0 && col < DAYS_SHOWN) {
-        const hoveredDate = dateToStr(dates[col]);
+      const slot = getSlotFromX(e.clientX);
+      if (slot >= 0 && slot < HALF_SLOTS) {
         setCreating((prev) => {
           if (!prev) return null;
-          // Ensure start <= end
-          const s = prev.startDateStr;
-          const h = hoveredDate;
+          const s = prev.startSlot;
+          const h = slot;
           return {
             ...prev,
-            endDateStr: h >= s ? h : s,
-            startDateStr: h < s ? h : prev.startDateStr,
+            endSlot: h >= s ? h : s,
+            startSlot: h < s ? h : prev.startSlot,
           };
         });
       }
     }
 
     if (moving) {
-      const col = getColFromX(e.clientX);
+      const slot = getSlotFromX(e.clientX);
       const row = getRowFromY(e.clientY);
       movingRef.current = { ...movingRef.current };
 
-      if (col >= 0 && col < DAYS_SHOWN) {
-        const newStartCol = Math.max(0, col - moving.grabDayOffset);
-        const duration = differenceInDays(
-          parseISO(moving.reservation.end_date),
-          parseISO(moving.reservation.start_date)
-        );
-        const clampedStartCol = Math.min(newStartCol, DAYS_SHOWN - 1 - duration);
-        const newStartDate = dateToStr(dates[Math.max(0, clampedStartCol)]);
-        const newEndDate = dateToStr(addDays(dates[Math.max(0, clampedStartCol)], duration));
+      if (slot >= 0 && slot < HALF_SLOTS) {
+        const durationSlots = moving.durationSlots;
+        const newStartSlot = Math.max(0, slot - moving.grabSlotOffset);
+        const clampedStartSlot = Math.min(newStartSlot, HALF_SLOTS - 1 - durationSlots);
+        const clampedEndSlot = clampedStartSlot + durationSlots;
+
+        const newStartDayIdx = Math.max(0, Math.min(Math.floor(clampedStartSlot / 2), DAYS_SHOWN - 1));
+        const newEndDayIdx = Math.max(0, Math.min(Math.floor(clampedEndSlot / 2), DAYS_SHOWN - 1));
+        const newStartDate = dateToStr(dates[newStartDayIdx]);
+        const newStartPeriod = clampedStartSlot % 2 === 0 ? '午前' : '午後';
+        const newEndDate = dateToStr(dates[newEndDayIdx]);
+        const newEndPeriod = clampedEndSlot % 2 === 0 ? '午前' : '午後';
 
         let newCarId = moving.currentCarId;
         if (row >= 0 && row < cars.length) {
@@ -176,54 +179,56 @@ export default function ScheduleView({ reloadKey = 0 }) {
         setMoving((prev) => prev ? {
           ...prev,
           currentCarId: newCarId,
+          currentStartSlot: clampedStartSlot,
           currentStartDate: newStartDate,
+          currentStartPeriod: newStartPeriod,
           currentEndDate: newEndDate,
-          col: clampedStartCol,
+          currentEndPeriod: newEndPeriod,
+          col: clampedStartSlot,
           row: row >= 0 && row < cars.length ? row : prev.row,
         } : null);
       }
     }
-  }, [creating, moving, dates, cars, getColFromX, getRowFromY]);
+  }, [creating, moving, dates, cars, getSlotFromX, getRowFromY]);
 
   const handleGridMouseUp = useCallback(async (e) => {
     if (creating) {
-      const { carId, startDateStr, endDateStr } = creating;
+      const { carId, startSlot, endSlot } = creating;
       setCreating(null);
+      const startDayIdx = Math.max(0, Math.min(Math.floor(startSlot / 2), DAYS_SHOWN - 1));
+      const endDayIdx = Math.max(0, Math.min(Math.floor(endSlot / 2), DAYS_SHOWN - 1));
       // Open modal to confirm/fill details
       setModal({
         mode: 'create',
         prefill: {
           car_id: carId,
-          start_date: startDateStr,
-          end_date: endDateStr,
+          start_date: dateToStr(dates[startDayIdx]),
+          start_period: startSlot % 2 === 0 ? '午前' : '午後',
+          end_date: dateToStr(dates[endDayIdx]),
+          end_period: endSlot % 2 === 0 ? '午前' : '午後',
         },
       });
     }
 
     if (moving) {
-      const { reservation, currentCarId, currentStartDate, currentEndDate } = moving;
+      const { reservation, currentCarId, origStartSlot, currentStartSlot, currentStartDate, currentStartPeriod, currentEndDate, currentEndPeriod } = moving;
       setMoving(null);
       movingRef.current = null;
 
-      const duration = differenceInDays(
-        parseISO(reservation.end_date),
-        parseISO(reservation.start_date)
-      );
-      const newEndDate = currentEndDate ||
-        dateToStr(addDays(parseISO(currentStartDate), duration));
-
       // Only update if something changed
       if (
         currentCarId !== reservation.car_id ||
-        currentStartDate !== reservation.start_date
+        currentStartSlot !== origStartSlot
       ) {
         try {
           await api.updateReservation(reservation.id, {
             car_id: currentCarId,
             start_date: currentStartDate,
-            end_date: newEndDate,
+            end_date: currentEndDate,
             customer_name: reservation.customer_name,
             notes: reservation.notes,
+            start_period: currentStartPeriod,
+            end_period: currentEndPeriod,
           });
           await loadData();
         } catch (err) {
@@ -232,7 +237,7 @@ export default function ScheduleView({ reloadKey = 0 }) {
         }
       }
     }
-  }, [creating, moving, loadData]);
+  }, [creating, moving, dates, loadData]);
 
   useEffect(() => {
     window.addEventListener('mousemove', handleGridMouseMove);
@@ -263,18 +268,28 @@ export default function ScheduleView({ reloadKey = 0 }) {
     if (e.button !== 0) return;
     e.preventDefault();
 
-    const col = getColFromX(e.clientX);
-    const startCol = Math.max(0, dates.findIndex((d) => dateToStr(d) === reservation.start_date));
-    const grabOffset = col >= 0 ? col - startCol : 0;
+    const slot = getSlotFromX(e.clientX);
+    // Compute the reservation's start/end slot within the current view
+    const startDayCol = Math.max(0, differenceInDays(parseISO(reservation.start_date), viewStart));
+    const endDayCol = Math.max(0, differenceInDays(parseISO(reservation.end_date), viewStart));
+    const startSlot = startDayCol * 2 + (reservation.start_period === '午後' ? 1 : 0);
+    const endSlot = endDayCol * 2 + (reservation.end_period === '午前' ? 0 : 1);
+    const durationSlots = Math.max(0, endSlot - startSlot);
+    const grabOffset = slot >= 0 ? slot - startSlot : 0;
     const carRow = cars.findIndex((c) => c.id === reservation.car_id);
 
     setMoving({
       reservation,
-      grabDayOffset: Math.max(0, grabOffset),
+      grabSlotOffset: Math.max(0, grabOffset),
+      durationSlots,
+      origStartSlot: startSlot,
       currentCarId: reservation.car_id,
+      currentStartSlot: startSlot,
       currentStartDate: reservation.start_date,
+      currentStartPeriod: reservation.start_period || '午前',
       currentEndDate: reservation.end_date,
-      col: startCol,
+      currentEndPeriod: reservation.end_period || '午後',
+      col: startSlot,
       row: carRow,
     });
   };
@@ -313,26 +328,26 @@ export default function ScheduleView({ reloadKey = 0 }) {
     (r) => r.end_date >= viewStartStr && r.start_date <= viewEndStr
   );
 
-  // For each reservation, calculate its left/width in the grid
+  // For each reservation, calculate its left/width in the grid (accounting for 午前/午後 periods)
   function getReservationLayout(r) {
     const rStart = r.start_date < viewStartStr ? viewStartStr : r.start_date;
     const rEnd = r.end_date > viewEndStr ? viewEndStr : r.end_date;
-    const startCol = differenceInDays(parseISO(rStart), viewStart);
-    const endCol = differenceInDays(parseISO(rEnd), viewStart);
-    const left = startCol * CELL_WIDTH;
-    const width = (endCol - startCol + 1) * CELL_WIDTH;
-    return { left, width, startCol, endCol };
+    const startDayCol = differenceInDays(parseISO(rStart), viewStart);
+    const endDayCol = differenceInDays(parseISO(rEnd), viewStart);
+    // Even slot = 午前, odd slot = 午後; empty period treated as 午前 for start, 午後 for end
+    const startSlot = startDayCol * 2 + (r.start_period === '午後' ? 1 : 0);
+    const endSlot = endDayCol * 2 + (r.end_period === '午前' ? 0 : 1);
+    const left = startSlot * CELL_WIDTH;
+    const width = (endSlot - startSlot + 1) * CELL_WIDTH;
+    return { left, width, startSlot, endSlot };
   }
 
   // Create ghost for currently moving reservation
   const movingGhost = moving ? (() => {
-    const duration = differenceInDays(
-      parseISO(moving.reservation.end_date),
-      parseISO(moving.reservation.start_date)
-    );
     const col = moving.col ?? 0;
+    const durationSlots = moving.durationSlots;
     const left = col * CELL_WIDTH;
-    const width = (duration + 1) * CELL_WIDTH;
+    const width = (durationSlots + 1) * CELL_WIDTH;
     return { col, left, width, row: moving.row };
   })() : null;
 
@@ -392,7 +407,7 @@ export default function ScheduleView({ reloadKey = 0 }) {
         )}
         <div
           className={styles.grid}
-          style={{ width: LABEL_WIDTH + DAYS_SHOWN * CELL_WIDTH }}
+          style={{ width: LABEL_WIDTH + DAYS_SHOWN * 2 * CELL_WIDTH }}
         >
           {/* Header row */}
           <div className={styles.headerRow} style={{ height: HEADER_HEIGHT }}>
@@ -401,7 +416,7 @@ export default function ScheduleView({ reloadKey = 0 }) {
               className={styles.cornerCell}
               style={{ width: LABEL_WIDTH, height: HEADER_HEIGHT }}
             />
-            {/* Date headers */}
+            {/* Date headers — each day spans two half-day slots (午前 + 午後) */}
             {dates.map((date) => {
               const ds = dateToStr(date);
               const isToday = ds === todayStr;
@@ -410,12 +425,18 @@ export default function ScheduleView({ reloadKey = 0 }) {
               return (
                 <div
                   key={ds}
-                  className={`${styles.dateHeader} ${isToday ? styles.todayHeader : ''} ${isWeekend ? styles.weekendHeader : ''}`}
-                  style={{ width: CELL_WIDTH, height: HEADER_HEIGHT }}
+                  className={`${styles.dateHeaderGroup} ${isToday ? styles.todayHeader : ''} ${isWeekend ? styles.weekendHeader : ''}`}
+                  style={{ width: CELL_WIDTH * 2, height: HEADER_HEIGHT }}
                 >
+                  <div className={styles.dateHeaderTop}>
                     <span className={styles.dateDay}>{format(date, 'd')}</span>
                     <span className={`${styles.dateDow} ${isWeekend ? styles.weekendDow : ''}`}>{dow}</span>
                   </div>
+                  <div className={styles.dateHeaderAmPm}>
+                    <div className={styles.periodLabel}>午前</div>
+                    <div className={styles.periodLabel}>午後</div>
+                  </div>
+                </div>
               );
             })}
           </div>
@@ -432,10 +453,8 @@ export default function ScheduleView({ reloadKey = 0 }) {
             const isCreatingRow = creating && creating.carId === car.id;
             let creatingLeft = 0, creatingWidth = 0;
             if (isCreatingRow) {
-              const startCol = differenceInDays(parseISO(creating.startDateStr), viewStart);
-              const endCol = differenceInDays(parseISO(creating.endDateStr), viewStart);
-              creatingLeft = Math.max(0, startCol) * CELL_WIDTH;
-              creatingWidth = (Math.min(endCol, DAYS_SHOWN - 1) - Math.max(0, startCol) + 1) * CELL_WIDTH;
+              creatingLeft = Math.max(0, creating.startSlot) * CELL_WIDTH;
+              creatingWidth = (Math.min(creating.endSlot, HALF_SLOTS - 1) - Math.max(0, creating.startSlot) + 1) * CELL_WIDTH;
             }
 
             // Ghost reservation for this row
@@ -467,25 +486,25 @@ export default function ScheduleView({ reloadKey = 0 }) {
                   </span>
                 </div>
 
-                {/* Day cells */}
+                {/* Day cells — two per day (午前 then 午後) */}
                 <div
                   className={styles.cellArea}
-                  style={{ width: DAYS_SHOWN * CELL_WIDTH, height: ROW_HEIGHT }}
+                  style={{ width: DAYS_SHOWN * 2 * CELL_WIDTH, height: ROW_HEIGHT }}
                   onClick={(e) => handleCellClick(e, car.id)}
                 >
-                  {dates.map((date) => {
+                  {dates.flatMap((date, dayIdx) => {
                     const ds = dateToStr(date);
                     const isToday = ds === todayStr;
                     const dow = format(date, 'E', { locale: ja });
                     const isWeekend = dow === '土' || dow === '日';
-                    return (
+                    return ['午前', '午後'].map((period, pIdx) => (
                       <div
-                        key={ds}
-                        className={`${styles.cell} ${isToday ? styles.todayCell : ''} ${isWeekend ? styles.weekendCell : ''} ${isTouchDevice ? styles.cellTouch : ''}`}
+                        key={`${ds}-${period}`}
+                        className={`${styles.cell} ${isToday ? styles.todayCell : ''} ${isWeekend ? styles.weekendCell : ''} ${isTouchDevice ? styles.cellTouch : ''} ${pIdx === 1 ? styles.cellDayEnd : ''}`}
                         style={{ width: CELL_WIDTH, height: ROW_HEIGHT }}
-                        onMouseDown={(e) => handleCellMouseDown(e, car.id, ds)}
+                        onMouseDown={(e) => handleCellMouseDown(e, car.id, dayIdx * 2 + pIdx)}
                       />
-                    );
+                    ));
                   })}
 
                   {/* Creating highlight */}

frontend/src/components/ScheduleView.module.css

@@ -124,6 +124,47 @@
   z-index: 30;
 }
 
+.dateHeaderGroup {
+  flex-shrink: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: stretch;
+  border-right: 2px solid #d1d5db;
+  background: white;
+  overflow: hidden;
+}
+
+.dateHeaderTop {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 2px;
+  flex: 1;
+  border-bottom: 1px solid #e5e7eb;
+}
+
+.dateHeaderAmPm {
+  display: flex;
+  height: 22px;
+  flex-shrink: 0;
+}
+
+.periodLabel {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 9px;
+  font-weight: 500;
+  color: #9ca3af;
+  letter-spacing: 0.03em;
+}
+
+.periodLabel:first-child {
+  border-right: 1px solid #f0f0f0;
+}
+
 .dateHeader {
   flex-shrink: 0;
   display: flex;
@@ -281,6 +322,10 @@
   background: rgba(26, 86, 219, 0.04);
 }
 
+.cellDayEnd {
+  border-right: 1px solid #d1d5db;
+}
+
 .todayCell {
   background: rgba(59, 130, 246, 0.06);
 }

frontend/src/components/TimelineView.jsx

@@ -136,9 +136,9 @@ export default function TimelineView({ reloadKey = 0 }) {
   const carColorMap = {};
   cars.forEach((car, i) => { carColorMap[car.id] = getColor(i); });
 
-  // Sort reservations by start_date then car
+  // Sort reservations by start_date descending (newest first) then car
   const sortedReservations = [...reservations].sort((a, b) => {
-    if (a.start_date !== b.start_date) return a.start_date < b.start_date ? -1 : 1;
+    if (a.start_date !== b.start_date) return a.start_date > b.start_date ? -1 : 1;
     return a.car_id - b.car_id;
   });