feat: split schedule view horizontal axis into AM/PM half-day slots

Agent-Logs-Url: https://github.com/pdf114514/CarReservation/sessions/b0f3486c-edf5-4c08-b1e8-161b380aa0a0

Co-authored-by: pdf114514 <57948770+pdf114514@users.noreply.github.com>

.gitignore

@@ -0,0 +1,6 @@
+node_modules/
+dist/
+*.db
+*.db-journal
+.env
+.DS_Store

README.md

@@ -1 +1,86 @@
 # CarReservation
+
+代車スケジュール管理システム — Car Rental Schedule Management System
+
+## Overview
+
+A web application for managing loaner car (代車) schedules at an auto shop.
+
+- **Frontend**: React + Vite
+- **Backend**: Express + SQLite (better-sqlite3)
+
+## Features
+
+- **Schedule View**: Table with cars as rows and dates as columns (21 days)
+- **Drag to Create**: Click and drag horizontally on empty cells to create a reservation
+- **Drag to Move**: Drag existing reservation blocks to move them to a new date/car
+- **Reservation Modal**: Create or edit reservations with car, dates, customer name, and notes
+- **Car Management**: Add, edit, and delete loaner cars
+
+## Getting Started
+
+### Prerequisites
+
+- Node.js 18+
+
+### Setup
+
+```bash
+# Install root dependencies (concurrently for dev)
+npm install
+
+# Install backend dependencies
+cd backend && npm install && cd ..
+
+# Install frontend dependencies
+cd frontend && npm install && cd ..
+```
+
+### Running
+
+```bash
+# Start backend (port 3001)
+npm run dev:backend
+
+# Start frontend (port 5173) in another terminal
+npm run dev:frontend
+
+# Or start both concurrently
+npm run dev
+```
+
+Open http://localhost:5173 in your browser.
+
+### Configuration
+
+#### Backend URL (development proxy)
+
+By default the Vite dev server proxies `/api` requests to `http://localhost:3001`.
+To point to a different backend server, set the `BACKEND_URL` environment variable when starting the frontend:
+
+```bash
+BACKEND_URL=http://192.168.1.10:3001 npm run dev:frontend
+```
+
+#### Backend URL (production build)
+
+When the frontend is deployed separately from the backend, set `VITE_API_BASE_URL` to the backend server's origin before building:
+
+```bash
+VITE_API_BASE_URL=https://api.example.com npm run build
+```
+
+This makes the built frontend send API requests to `https://api.example.com/api`.
+
+### API Endpoints
+
+| Method | Path | Description |
+|--------|------|-------------|
+| GET | /api/cars | List all cars |
+| POST | /api/cars | Create a car |
+| PUT | /api/cars/:id | Update a car |
+| DELETE | /api/cars/:id | Delete a car (cascades to reservations) |
+| GET | /api/reservations | List all reservations |
+| POST | /api/reservations | Create a reservation |
+| PUT | /api/reservations/:id | Update a reservation |
+| DELETE | /api/reservations/:id | Delete a reservation |

backend/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node server.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "type": "commonjs",
+  "dependencies": {
+    "better-sqlite3": "^12.8.0",
+    "cors": "^2.8.6",
+    "express": "^5.2.1",
+    "express-rate-limit": "^8.3.1",
+    "ws": "^8.20.0"
+  }
+}

backend/server.js

@@ -0,0 +1,239 @@
+const express = require('express');
+const cors = require('cors');
+const rateLimit = require('express-rate-limit');
+const Database = require('better-sqlite3');
+const path = require('path');
+const http = require('http');
+const { WebSocketServer } = require('ws');
+
+const app = express();
+const PORT = process.env.PORT || 3001;
+const server = http.createServer(app);
+
+// Trust the first proxy (nginx) so that express-rate-limit can correctly
+// identify clients by their real IP from the X-Forwarded-For header.
+app.set('trust proxy', 1);
+
+app.use(cors());
+app.use(express.json());
+
+// Serve the built frontend (production mode)
+const distPath = path.join(__dirname, '..', 'frontend', 'dist');
+app.use(express.static(distPath));
+
+// Apply rate limiting to all API routes
+const apiLimiter = rateLimit({
+  windowMs: 15 * 60 * 1000, // 15 minutes
+  max: 300, // limit each IP to 300 requests per windowMs
+  standardHeaders: true,
+  legacyHeaders: false,
+  message: { error: 'リクエストが多すぎます。しばらくしてから再試行してください。' },
+});
+app.use('/api', apiLimiter);
+
+const dbPath = path.join(__dirname, 'data.db');
+const db = new Database(dbPath);
+
+// Initialize database schema
+db.exec(`
+  CREATE TABLE IF NOT EXISTS cars (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL,
+    description TEXT DEFAULT ''
+  );
+
+  CREATE TABLE IF NOT EXISTS reservations (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    car_id INTEGER NOT NULL,
+    start_date TEXT NOT NULL,
+    end_date TEXT NOT NULL,
+    customer_name TEXT DEFAULT '',
+    notes TEXT DEFAULT '',
+    FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE
+  );
+`);
+
+// Migrate: add new car fields if they don't exist yet
+const carCols = db.prepare("PRAGMA table_info(cars)").all().map((c) => c.name);
+if (!carCols.includes('inspection_expiry')) {
+  db.exec("ALTER TABLE cars ADD COLUMN inspection_expiry TEXT DEFAULT ''");
+}
+if (!carCols.includes('has_etc')) {
+  db.exec('ALTER TABLE cars ADD COLUMN has_etc INTEGER DEFAULT 0');
+}
+if (!carCols.includes('tire_type')) {
+  db.exec("ALTER TABLE cars ADD COLUMN tire_type TEXT DEFAULT 'ノーマル'");
+}
+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);
+if (!resCols.includes('start_period')) {
+  db.exec("ALTER TABLE reservations ADD COLUMN start_period TEXT DEFAULT ''");
+}
+if (!resCols.includes('end_period')) {
+  db.exec("ALTER TABLE reservations ADD COLUMN end_period TEXT DEFAULT ''");
+}
+
+// Seed some initial cars if none exist
+const carCount = db.prepare('SELECT COUNT(*) as cnt FROM cars').get();
+if (carCount.cnt === 0) {
+  const insertCar = db.prepare('INSERT INTO cars (name, description, sort_order) VALUES (?, ?, ?)');
+  insertCar.run('代車 A', '', 1);
+  insertCar.run('代車 B', '', 2);
+  insertCar.run('代車 C', '', 3);
+}
+
+// --- WebSocket Server ---
+const wss = new WebSocketServer({ server, path: '/api/ws' });
+
+function broadcast(message) {
+  const data = JSON.stringify(message);
+  wss.clients.forEach((client) => {
+    if (client.readyState === client.OPEN) {
+      client.send(data);
+    }
+  });
+}
+
+function normalizeTireType(value) {
+  return value === 'スタットレス' ? 'スタッドレス' : value;
+}
+
+function normalizeCar(car) {
+  if (!car) {
+    return car;
+  }
+  return {
+    ...car,
+    tire_type: normalizeTireType(car.tire_type),
+  };
+}
+
+wss.on('connection', (ws) => {
+  ws.on('error', () => {}); // suppress unhandled error events
+});
+
+// --- Cars API ---
+app.get('/api/cars', (req, res) => {
+  const cars = db.prepare('SELECT * FROM cars ORDER BY sort_order, id').all().map(normalizeCar);
+  res.json(cars);
+});
+
+app.post('/api/cars', (req, res) => {
+  const { name, description = '', inspection_expiry = '', has_etc = 0, tire_type = 'ノーマル' } = req.body;
+  if (!name || !name.trim()) {
+    return res.status(400).json({ error: '車名は必須です' });
+  }
+  const maxOrder = db.prepare('SELECT MAX(sort_order) as m FROM cars').get().m ?? 0;
+  const result = db.prepare(
+    'INSERT INTO cars (name, description, inspection_expiry, has_etc, tire_type, sort_order) VALUES (?, ?, ?, ?, ?, ?)'
+  ).run(name.trim(), description, inspection_expiry, has_etc ? 1 : 0, tire_type, maxOrder + 1);
+  const car = normalizeCar(db.prepare('SELECT * FROM cars WHERE id = ?').get(result.lastInsertRowid));
+  broadcast({ type: 'data_changed', entity: 'cars' });
+  res.status(201).json(car);
+});
+
+app.put('/api/cars/reorder', (req, res) => {
+  const { ids } = req.body;
+  if (!Array.isArray(ids) || ids.length === 0) {
+    return res.status(400).json({ error: 'ids は配列で指定してください' });
+  }
+  const updateOrder = db.prepare('UPDATE cars SET sort_order = ? WHERE id = ?');
+  const transaction = db.transaction((orderedIds) => {
+    orderedIds.forEach((id, index) => {
+      updateOrder.run(index + 1, id);
+    });
+  });
+  transaction(ids);
+  broadcast({ type: 'data_changed', entity: 'cars' });
+  res.json({ success: true });
+});
+
+app.put('/api/cars/:id', (req, res) => {
+  const { name, description, inspection_expiry, has_etc, tire_type } = req.body;
+  if (!name || !name.trim()) {
+    return res.status(400).json({ error: '車名は必須です' });
+  }
+  const result = db.prepare(
+    'UPDATE cars SET name = ?, description = ?, inspection_expiry = ?, has_etc = ?, tire_type = ? WHERE id = ?'
+  ).run(name.trim(), description ?? '', inspection_expiry ?? '', has_etc ? 1 : 0, tire_type ?? 'ノーマル', req.params.id);
+  if (result.changes === 0) {
+    return res.status(404).json({ error: '車が見つかりません' });
+  }
+  const car = normalizeCar(db.prepare('SELECT * FROM cars WHERE id = ?').get(req.params.id));
+  broadcast({ type: 'data_changed', entity: 'cars' });
+  res.json(car);
+});
+
+app.delete('/api/cars/:id', (req, res) => {
+  const result = db.prepare('DELETE FROM cars WHERE id = ?').run(req.params.id);
+  if (result.changes === 0) {
+    return res.status(404).json({ error: '車が見つかりません' });
+  }
+  broadcast({ type: 'data_changed', entity: 'all' });
+  res.json({ success: true });
+});
+
+// --- Reservations API ---
+app.get('/api/reservations', (req, res) => {
+  const reservations = db.prepare('SELECT * FROM reservations ORDER BY start_date').all();
+  res.json(reservations);
+});
+
+app.post('/api/reservations', (req, res) => {
+  const { car_id, start_date, end_date, customer_name = '', notes = '', start_period = '', end_period = '' } = req.body;
+  if (!car_id || !start_date || !end_date) {
+    return res.status(400).json({ error: 'car_id, start_date, end_date は必須です' });
+  }
+  if (start_date > end_date) {
+    return res.status(400).json({ error: '開始日は終了日以前である必要があります' });
+  }
+  const result = db.prepare(
+    'INSERT INTO reservations (car_id, start_date, end_date, customer_name, notes, start_period, end_period) VALUES (?, ?, ?, ?, ?, ?, ?)'
+  ).run(car_id, start_date, end_date, customer_name, notes, start_period, end_period);
+  const reservation = db.prepare('SELECT * FROM reservations WHERE id = ?').get(result.lastInsertRowid);
+  broadcast({ type: 'data_changed', entity: 'reservations' });
+  res.status(201).json(reservation);
+});
+
+app.put('/api/reservations/:id', (req, res) => {
+  const { car_id, start_date, end_date, customer_name, notes, start_period, end_period } = req.body;
+  if (!car_id || !start_date || !end_date) {
+    return res.status(400).json({ error: 'car_id, start_date, end_date は必須です' });
+  }
+  if (start_date > end_date) {
+    return res.status(400).json({ error: '開始日は終了日以前である必要があります' });
+  }
+  const result = db.prepare(
+    'UPDATE reservations SET car_id = ?, start_date = ?, end_date = ?, customer_name = ?, notes = ?, start_period = ?, end_period = ? WHERE id = ?'
+  ).run(car_id, start_date, end_date, customer_name ?? '', notes ?? '', start_period ?? '', end_period ?? '', req.params.id);
+  if (result.changes === 0) {
+    return res.status(404).json({ error: '予約が見つかりません' });
+  }
+  const reservation = db.prepare('SELECT * FROM reservations WHERE id = ?').get(req.params.id);
+  broadcast({ type: 'data_changed', entity: 'reservations' });
+  res.json(reservation);
+});
+
+app.delete('/api/reservations/:id', (req, res) => {
+  const result = db.prepare('DELETE FROM reservations WHERE id = ?').run(req.params.id);
+  if (result.changes === 0) {
+    return res.status(404).json({ error: '予約が見つかりません' });
+  }
+  broadcast({ type: 'data_changed', entity: 'reservations' });
+  res.json({ success: true });
+});
+
+// SPA fallback: serve index.html for any non-API route
+app.get('/*path', apiLimiter, (req, res) => {
+  res.sendFile(path.join(distPath, 'index.html'));
+});
+
+server.listen(PORT, () => {
+  console.log(`Server running on http://localhost:${PORT}`);
+});

car-login.html

@@ -0,0 +1,112 @@
+<!DOCTYPE html> <!-- Gemini ありがとう -->
+<html lang="ja">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>ログイン</title>
+    <style>
+        /* CSS（見た目）の設定 */
+        body {
+            font-family: 'Helvetica Neue', Arial, 'Hiragino Sans', sans-serif;
+            background-color: #f3f4f6;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+        }
+        .login-box {
+            background-color: #ffffff;
+            padding: 40px;
+            border-radius: 8px;
+            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
+            width: 100%;
+            max-width: 320px;
+            text-align: center;
+        }
+        .login-box h2 {
+            margin: 0 0 20px;
+            color: #333;
+        }
+        .input-group {
+            margin-bottom: 20px;
+            text-align: left;
+        }
+        .input-group label {
+            display: block;
+            font-size: 14px;
+            color: #666;
+            margin-bottom: 8px;
+        }
+        .input-group input {
+            width: 100%;
+            padding: 10px;
+            border: 1px solid #ccc;
+            border-radius: 4px;
+            box-sizing: border-box;
+            font-size: 16px;
+        }
+        .login-btn {
+            width: 100%;
+            padding: 12px;
+            background-color: #2563eb;
+            color: white;
+            border: none;
+            border-radius: 4px;
+            font-size: 16px;
+            cursor: pointer;
+            transition: background-color 0.2s;
+        }
+        .login-btn:hover {
+            background-color: #1d4ed8;
+        }
+        .error-msg {
+            color: #ef4444;
+            font-size: 14px;
+            margin-top: 15px;
+            display: none; /* 初期状態は隠しておく */
+        }
+    </style>
+</head>
+<body>
+
+<div class="login-box">
+    <h2>システムログイン</h2>
+    <form id="loginForm">
+        <div class="input-group">
+            <label for="password">パスワード</label>
+            <input type="password" id="password" required placeholder="パスワードを入力">
+        </div>
+        <button type="submit" class="login-btn">ログイン</button>
+        <div id="errorMsg" class="error-msg">パスワードが違います</div>
+    </form>
+</div>
+
+<script>
+    // 【おまけのUX向上】
+    // もしログイン画面を開いた時点で「site_auth」クッキーが残っている場合、
+    // それは「Nginxにパスワードが違うと弾かれて戻ってきた」証拠です。
+    // エラーメッセージを出して、間違ったクッキーはお掃除しておきます。
+    if (document.cookie.includes('site_auth=')) {
+        document.getElementById('errorMsg').style.display = 'block';
+        document.cookie = "site_auth=; path=/; max-age=0"; // クッキーを削除
+    }
+
+    // フォーム送信時の処理
+    document.getElementById('loginForm').addEventListener('submit', function(e) {
+        e.preventDefault(); 
+
+        // 入力されたパスワードを取得
+        const passwordInput = document.getElementById('password').value;
+
+        // 入力値をそのままCookie（site_auth）としてセットする
+        // encodeURIComponent を挟むことで、記号などが入力されても安全にCookie化します
+        document.cookie = "site_auth=" + encodeURIComponent(passwordInput) + "; path=/; max-age=86400";
+        
+        // Nginx（トップページ）へリクエストを送る
+        window.location.href = "/";
+    });
+</script>
+
+</body>
+</html>

frontend/index.html

@@ -0,0 +1,12 @@
+<!doctype html>
+<html lang="ja">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>代車スケジュール管理</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>

frontend/package-lock.json

@@ -0,0 +1,894 @@
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+  "name": "frontend",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "frontend",
+      "version": "1.0.0",
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+        "date-fns": "^4.1.0",
+        "react": "^19.2.4",
+        "react-dom": "^19.2.4",
+        "vite": "^8.0.1"
+      }
+    },
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+      "optional": true,
+      "dependencies": {
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+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/Boshen"
+      }
+    },
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+      "cpu": [
+        "arm64"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
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+}

frontend/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "frontend",
+  "version": "1.0.0",
+  "description": "Car Reservation Frontend",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@vitejs/plugin-react": "^6.0.1",
+    "date-fns": "^4.1.0",
+    "react": "^19.2.4",
+    "react-dom": "^19.2.4",
+    "vite": "^8.0.1"
+  }
+}

frontend/src/App.jsx

@@ -0,0 +1,69 @@
+import { useState, useCallback } from 'react';
+import ScheduleView from './components/ScheduleView.jsx';
+import CarManagement from './components/CarManagement.jsx';
+import TimelineView from './components/TimelineView.jsx';
+import useWebSocket from './hooks/useWebSocket.js';
+import styles from './App.module.css';
+
+export default function App() {
+  const [page, setPage] = useState('schedule');
+  const [reloadKey, setReloadKey] = useState(0);
+
+  const handleWsMessage = useCallback((msg) => {
+    if (msg.type === 'data_changed') {
+      setReloadKey((k) => k + 1);
+    }
+  }, []);
+
+  const { status: wsStatus } = useWebSocket(handleWsMessage);
+
+  return (
+    <div className={styles.app}>
+      <header className={styles.header}>
+        <div className={styles.headerLeft}>
+          <span
+            className={`${styles.wsIndicator} ${styles['wsIndicator_' + wsStatus]}`}
+            title={
+              wsStatus === 'connected' ? 'リアルタイム同期: 接続中' :
+              wsStatus === 'connecting' || wsStatus === 'disconnected' ? 'リアルタイム同期: 再接続中...' :
+              'リアルタイム同期: 接続失敗'
+            }
+          />
+          <h1 className={styles.title}>🚗 代車スケジュール管理</h1>
+        </div>
+        <nav className={styles.nav}>
+          <button
+            className={`${styles.navBtn} ${page === 'schedule' ? styles.active : ''}`}
+            onClick={() => setPage('schedule')}
+          >
+            📅 スケジュール
+          </button>
+          <button
+            className={`${styles.navBtn} ${page === 'timeline' ? styles.active : ''}`}
+            onClick={() => setPage('timeline')}
+          >
+            📊 タイムライン
+          </button>
+          <button
+            className={`${styles.navBtn} ${page === 'cars' ? styles.active : ''}`}
+            onClick={() => setPage('cars')}
+          >
+            🚙 代車管理
+          </button>
+        </nav>
+      </header>
+
+      {wsStatus === 'error' && (
+        <div className={styles.wsError}>
+          ⚠️ サーバーとの接続が切断されました。ページを再読み込みしてください。
+        </div>
+      )}
+
+      <main className={styles.main}>
+        {page === 'schedule' && <ScheduleView reloadKey={reloadKey} />}
+        {page === 'timeline' && <TimelineView reloadKey={reloadKey} />}
+        {page === 'cars' && <CarManagement reloadKey={reloadKey} />}
+      </main>
+    </div>
+  );
+}

frontend/src/App.module.css

@@ -0,0 +1,104 @@
+.app {
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+}
+
+.header {
+  background: #1a56db;
+  color: white;
+  padding: 0 24px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  height: 56px;
+  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
+  position: sticky;
+  top: 0;
+  z-index: 100;
+}
+
+.headerLeft {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.title {
+  font-size: 20px;
+  font-weight: 700;
+  letter-spacing: 0.5px;
+}
+
+/* WebSocket connection indicator dot */
+.wsIndicator {
+  display: inline-block;
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+  flex-shrink: 0;
+  transition: background 0.3s;
+}
+
+.wsIndicator_connected {
+  background: #4ade80; /* green */
+  box-shadow: 0 0 6px #4ade80;
+}
+
+.wsIndicator_connecting,
+.wsIndicator_disconnected {
+  background: #fbbf24; /* amber */
+  animation: pulse 1s infinite;
+}
+
+.wsIndicator_error {
+  background: #f87171; /* red */
+}
+
+@keyframes pulse {
+  0%, 100% { opacity: 1; }
+  50% { opacity: 0.4; }
+}
+
+/* Disconnection warning banner */
+.wsError {
+  background: #fef3c7;
+  border-bottom: 2px solid #f59e0b;
+  color: #92400e;
+  padding: 8px 24px;
+  font-size: 14px;
+  font-weight: 500;
+  text-align: center;
+}
+
+.nav {
+  display: flex;
+  gap: 8px;
+}
+
+.navBtn {
+  background: rgba(255,255,255,0.15);
+  border: 1px solid rgba(255,255,255,0.3);
+  color: white;
+  padding: 6px 16px;
+  border-radius: 6px;
+  font-size: 14px;
+  font-weight: 500;
+  transition: background 0.15s;
+}
+
+.navBtn:hover {
+  background: rgba(255,255,255,0.25);
+}
+
+.navBtn.active {
+  background: white;
+  color: #1a56db;
+  border-color: white;
+}
+
+.main {
+  flex: 1;
+  overflow: hidden;
+}
+

frontend/src/api.js

@@ -0,0 +1,33 @@
+const API_BASE = (import.meta.env.VITE_API_BASE_URL ?? '') + '/api';
+
+async function request(path, options = {}) {
+  const hasBody = options.body !== undefined;
+  const res = await fetch(`${API_BASE}${path}`, {
+    credentials: 'include',
+    headers: {
+      ...(hasBody ? { 'Content-Type': 'application/json' } : {}),
+      ...(options.headers ?? {}),
+    },
+    ...options,
+  });
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({ error: 'Unknown error' }));
+    throw new Error(err.error || `HTTP ${res.status}`);
+  }
+  return res.json();
+}
+
+export const api = {
+  // Cars
+  getCars: () => request('/cars'),
+  createCar: (data) => request('/cars', { method: 'POST', body: JSON.stringify(data) }),
+  updateCar: (id, data) => request(`/cars/${id}`, { method: 'PUT', body: JSON.stringify(data) }),
+  deleteCar: (id) => request(`/cars/${id}`, { method: 'DELETE' }),
+  reorderCars: (ids) => request('/cars/reorder', { method: 'PUT', body: JSON.stringify({ ids }) }),
+
+  // Reservations
+  getReservations: () => request('/reservations'),
+  createReservation: (data) => request('/reservations', { method: 'POST', body: JSON.stringify(data) }),
+  updateReservation: (id, data) => request(`/reservations/${id}`, { method: 'PUT', body: JSON.stringify(data) }),
+  deleteReservation: (id) => request(`/reservations/${id}`, { method: 'DELETE' }),
+};

frontend/src/components/CarManagement.jsx

@@ -0,0 +1,369 @@
+import { useState, useEffect, useCallback, useRef } from 'react';
+import { api } from '../api.js';
+import { isInspectionExpirySoon } from '../utils/carUtils.js';
+import styles from './CarManagement.module.css';
+
+export default function CarManagement({ reloadKey = 0 }) {
+  const [cars, setCars] = useState([]);
+  const [reservations, setReservations] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState(null);
+  const [newCarName, setNewCarName] = useState('');
+  const [newCarDesc, setNewCarDesc] = useState('');
+  const [newCarExpiry, setNewCarExpiry] = useState('');
+  const [newCarEtc, setNewCarEtc] = useState(false);
+  const [newCarTire, setNewCarTire] = useState('ノーマル');
+  const [editingId, setEditingId] = useState(null);
+  const [editName, setEditName] = useState('');
+  const [editDesc, setEditDesc] = useState('');
+  const [editExpiry, setEditExpiry] = useState('');
+  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 {
+      setLoading(true);
+      const [carsData, resData] = await Promise.all([api.getCars(), api.getReservations()]);
+      setCars(carsData);
+      setReservations(resData);
+      setError(null);
+    } catch (e) {
+      setError(e.message);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    loadCars();
+  }, [loadCars, reloadKey]);
+
+  const handleAdd = async (e) => {
+    e.preventDefault();
+    if (!newCarName.trim()) return;
+    try {
+      setSubmitting(true);
+      await api.createCar({
+        name: newCarName.trim(),
+        description: newCarDesc.trim(),
+        inspection_expiry: newCarExpiry,
+        has_etc: newCarEtc,
+        tire_type: newCarTire,
+      });
+      setNewCarName('');
+      setNewCarDesc('');
+      setNewCarExpiry('');
+      setNewCarEtc(false);
+      setNewCarTire('ノーマル');
+      await loadCars();
+    } catch (e) {
+      setError(e.message);
+    } finally {
+      setSubmitting(false);
+    }
+  };
+
+  const handleDelete = async (id, name) => {
+    const carReservations = reservations.filter((r) => r.car_id === id);
+    const message = carReservations.length > 0
+      ? `「${name}」を削除しますか？\n⚠ この代車には ${carReservations.length} 件の予約があります。削除するとこれらの予約もすべて削除されます。`
+      : `「${name}」を削除しますか？\n関連する予約もすべて削除されます。`;
+    if (!confirm(message)) return;
+    try {
+      await api.deleteCar(id);
+      await loadCars();
+    } catch (e) {
+      setError(e.message);
+    }
+  };
+
+  const startEdit = (car) => {
+    setEditingId(car.id);
+    setEditName(car.name);
+    setEditDesc(car.description || '');
+    setEditExpiry(car.inspection_expiry || '');
+    setEditEtc(!!car.has_etc);
+    setEditTire(car.tire_type || 'ノーマル');
+  };
+
+  const cancelEdit = () => {
+    setEditingId(null);
+    setEditName('');
+    setEditDesc('');
+    setEditExpiry('');
+    setEditEtc(false);
+    setEditTire('ノーマル');
+  };
+
+  const handleUpdate = async (id) => {
+    if (!editName.trim()) return;
+    try {
+      setSubmitting(true);
+      await api.updateCar(id, {
+        name: editName.trim(),
+        description: editDesc.trim(),
+        inspection_expiry: editExpiry,
+        has_etc: editEtc,
+        tire_type: editTire,
+      });
+      cancelEdit();
+      await loadCars();
+    } catch (e) {
+      setError(e.message);
+    } finally {
+      setSubmitting(false);
+    }
+  };
+
+  const applyReorder = async (newCars) => {
+    setCars(newCars);
+    try {
+      await api.reorderCars(newCars.map((c) => c.id));
+    } catch (e) {
+      setError(e.message);
+      await loadCars();
+    }
+  };
+
+  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>
+
+      <div className={styles.addCard}>
+        <h3 className={styles.subHeading}>代車を追加</h3>
+        <form className={styles.form} onSubmit={handleAdd}>
+          <div className={styles.formRow}>
+            <input
+              type="text"
+              className={styles.input}
+              placeholder="車名（例：プリウス A）"
+              value={newCarName}
+              onChange={(e) => setNewCarName(e.target.value)}
+              required
+            />
+            <input
+              type="text"
+              className={styles.input}
+              placeholder="備考（任意）"
+              value={newCarDesc}
+              onChange={(e) => setNewCarDesc(e.target.value)}
+            />
+          </div>
+          <div className={styles.formRow}>
+            <label className={styles.fieldLabel}>
+              車検満了日
+              <input
+                type="date"
+                className={styles.input}
+                value={newCarExpiry}
+                onChange={(e) => setNewCarExpiry(e.target.value)}
+              />
+            </label>
+            <label className={styles.fieldLabel}>
+              ETC
+              <select
+                className={styles.input}
+                value={newCarEtc ? 'あり' : 'なし'}
+                onChange={(e) => setNewCarEtc(e.target.value === 'あり')}
+              >
+                <option value="なし">なし</option>
+                <option value="あり">あり</option>
+              </select>
+            </label>
+            <label className={styles.fieldLabel}>
+              タイヤ
+              <select
+                className={styles.input}
+                value={newCarTire}
+                onChange={(e) => setNewCarTire(e.target.value)}
+              >
+                <option value="ノーマル">ノーマル</option>
+                <option value="スタッドレス">スタッドレス</option>
+              </select>
+            </label>
+            <button type="submit" className={styles.btnPrimary} disabled={submitting || !newCarName.trim()}>
+              + 追加
+            </button>
+          </div>
+        </form>
+      </div>
+
+      {loading && <p className={styles.message}>読み込み中...</p>}
+      {error && <p className={styles.error}>エラー: {error}</p>}
+
+      {!loading && !error && (
+        <div className={styles.tableWrapper}>
+          <table className={styles.table}>
+            <thead>
+              <tr>
+                <th>順番</th>
+                <th>車名</th>
+                <th>備考</th>
+                <th>車検満了日</th>
+                <th>ETC</th>
+                <th>タイヤ</th>
+                <th>操作</th>
+              </tr>
+            </thead>
+            <tbody>
+              {cars.length === 0 && (
+                <tr>
+                  <td colSpan={7} className={styles.empty}>代車がありません</td>
+                </tr>
+              )}
+              {cars.map((car, carIdx) => (
+                <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
+                        className={styles.btnOrder}
+                        onClick={() => handleReorder(carIdx, -1)}
+                        disabled={carIdx === 0}
+                        title="上に移動"
+                        aria-label="上に移動"
+                      >▲</button>
+                      <button
+                        className={styles.btnOrder}
+                        onClick={() => handleReorder(carIdx, 1)}
+                        disabled={carIdx === cars.length - 1}
+                        title="下に移動"
+                        aria-label="下に移動"
+                      >▼</button>
+                    </div>
+                  </td>
+                  {editingId === car.id ? (
+                    <>
+                      <td>
+                        <input
+                          type="text"
+                          className={styles.input}
+                          value={editName}
+                          onChange={(e) => setEditName(e.target.value)}
+                        />
+                      </td>
+                      <td>
+                        <input
+                          type="text"
+                          className={styles.input}
+                          value={editDesc}
+                          onChange={(e) => setEditDesc(e.target.value)}
+                        />
+                      </td>
+                      <td>
+                        <input
+                          type="date"
+                          className={styles.input}
+                          value={editExpiry}
+                          onChange={(e) => setEditExpiry(e.target.value)}
+                        />
+                      </td>
+                      <td>
+                        <select
+                          className={styles.input}
+                          value={editEtc ? 'あり' : 'なし'}
+                          onChange={(e) => setEditEtc(e.target.value === 'あり')}
+                        >
+                          <option value="なし">なし</option>
+                          <option value="あり">あり</option>
+                        </select>
+                      </td>
+                      <td>
+                        <select
+                          className={styles.input}
+                          value={editTire}
+                          onChange={(e) => setEditTire(e.target.value)}
+                        >
+                          <option value="ノーマル">ノーマル</option>
+                          <option value="スタッドレス">スタッドレス</option>
+                        </select>
+                      </td>
+                      <td className={styles.actions}>
+                        <button
+                          className={styles.btnSave}
+                          onClick={() => handleUpdate(car.id)}
+                          disabled={submitting}
+                        >
+                          保存
+                        </button>
+                        <button className={styles.btnCancel} onClick={cancelEdit}>
+                          キャンセル
+                        </button>
+                      </td>
+                    </>
+                  ) : (
+                    <>
+                      <td>{car.name}</td>
+                      <td className={styles.descCell}>{car.description || '-'}</td>
+                      <td className={styles.descCell}>
+                        {car.inspection_expiry
+                          ? isInspectionExpirySoon(car.inspection_expiry)
+                            ? <span className={styles.expiryWarn}>⚠️ {car.inspection_expiry}</span>
+                            : car.inspection_expiry
+                          : '-'}
+                      </td>
+                      <td>{car.has_etc ? <span className={styles.badgeEtc}>ETC</span> : 'なし'}</td>
+                      <td>{car.tire_type === 'スタッドレス' ? <span className={styles.badgeStudless}>スタッドレス</span> : 'ノーマル'}</td>
+                      <td className={styles.actions}>
+                        <button className={styles.btnEdit} onClick={() => startEdit(car)}>
+                          編集
+                        </button>
+                        <button className={styles.btnDelete} onClick={() => handleDelete(car.id, car.name)}>
+                          削除
+                        </button>
+                      </td>
+                    </>
+                  )}
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/components/CarManagement.module.css

@@ -0,0 +1,279 @@
+.container {
+  max-width: 900px;
+  margin: 32px auto;
+  padding: 0 24px;
+}
+
+.heading {
+  font-size: 22px;
+  font-weight: 700;
+  margin-bottom: 24px;
+  color: #1a56db;
+}
+
+.subHeading {
+  font-size: 16px;
+  font-weight: 600;
+  margin-bottom: 12px;
+  color: #374151;
+}
+
+.addCard {
+  background: white;
+  border-radius: 10px;
+  padding: 20px;
+  margin-bottom: 24px;
+  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
+}
+
+.form {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.formRow {
+  display: flex;
+  gap: 12px;
+  align-items: center;
+  flex-wrap: wrap;
+}
+
+.input {
+  border: 1.5px solid #d1d5db;
+  border-radius: 6px;
+  padding: 8px 12px;
+  font-size: 14px;
+  outline: none;
+  transition: border-color 0.15s;
+  flex: 1;
+  min-width: 120px;
+}
+
+.input:focus {
+  border-color: #1a56db;
+}
+
+.btnPrimary {
+  background: #1a56db;
+  color: white;
+  border: none;
+  padding: 8px 20px;
+  border-radius: 6px;
+  font-size: 14px;
+  font-weight: 600;
+  white-space: nowrap;
+  transition: background 0.15s;
+}
+
+.btnPrimary:hover:not(:disabled) {
+  background: #1447c0;
+}
+
+.btnPrimary:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.tableWrapper {
+  background: white;
+  border-radius: 10px;
+  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
+  overflow-x: auto;
+}
+
+.table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 14px;
+}
+
+.table th {
+  background: #f3f4f6;
+  padding: 12px 16px;
+  text-align: left;
+  font-weight: 600;
+  color: #374151;
+  border-bottom: 1.5px solid #e5e7eb;
+}
+
+.table td {
+  padding: 12px 16px;
+  border-bottom: 1px solid #f0f0f0;
+  vertical-align: middle;
+}
+
+.table tr:last-child td {
+  border-bottom: none;
+}
+
+.table tbody tr:hover {
+  background: #fafafa;
+}
+
+.table tbody tr[draggable] {
+  cursor: grab;
+}
+
+.dragOver {
+  background: #eff6ff !important;
+  outline: 2px dashed #1a56db;
+  outline-offset: -2px;
+}
+
+.idCell {
+  color: #9ca3af;
+  width: 80px;
+}
+
+.orderBtns {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  align-items: center;
+}
+
+.btnOrder {
+  background: #f3f4f6;
+  border: 1px solid #d1d5db;
+  color: #374151;
+  padding: 1px 8px;
+  border-radius: 4px;
+  font-size: 10px;
+  line-height: 1.4;
+  transition: background 0.15s;
+}
+
+.btnOrder:hover:not(:disabled) {
+  background: #e5e7eb;
+}
+
+.btnOrder:disabled {
+  opacity: 0.3;
+  cursor: not-allowed;
+}
+
+.descCell {
+  color: #6b7280;
+}
+
+.actions {
+  display: flex;
+  gap: 8px;
+}
+
+.btnEdit {
+  background: #f3f4f6;
+  border: 1px solid #d1d5db;
+  color: #374151;
+  padding: 5px 14px;
+  border-radius: 5px;
+  font-size: 13px;
+  transition: background 0.15s;
+}
+
+.btnEdit:hover {
+  background: #e5e7eb;
+}
+
+.btnDelete {
+  background: #fee2e2;
+  border: 1px solid #fca5a5;
+  color: #dc2626;
+  padding: 5px 14px;
+  border-radius: 5px;
+  font-size: 13px;
+  transition: background 0.15s;
+}
+
+.btnDelete:hover {
+  background: #fecaca;
+}
+
+.btnSave {
+  background: #d1fae5;
+  border: 1px solid #6ee7b7;
+  color: #059669;
+  padding: 5px 14px;
+  border-radius: 5px;
+  font-size: 13px;
+  transition: background 0.15s;
+}
+
+.btnSave:hover:not(:disabled) {
+  background: #a7f3d0;
+}
+
+.btnCancel {
+  background: #f3f4f6;
+  border: 1px solid #d1d5db;
+  color: #6b7280;
+  padding: 5px 14px;
+  border-radius: 5px;
+  font-size: 13px;
+}
+
+.btnCancel:hover {
+  background: #e5e7eb;
+}
+
+.message {
+  text-align: center;
+  color: #6b7280;
+  padding: 24px;
+}
+
+.error {
+  color: #dc2626;
+  background: #fee2e2;
+  padding: 12px 16px;
+  border-radius: 6px;
+  margin-bottom: 16px;
+}
+
+.empty {
+  text-align: center;
+  color: #9ca3af;
+  padding: 32px;
+}
+
+.fieldLabel {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  font-size: 12px;
+  color: #6b7280;
+  font-weight: 500;
+}
+
+.fieldLabel .input {
+  min-width: 130px;
+}
+
+.expiryWarn {
+  color: #b45309;
+  font-weight: 600;
+}
+
+.badgeEtc {
+  display: inline-block;
+  background: #7c3aed;
+  color: #fff;
+  font-size: 11px;
+  font-weight: 700;
+  padding: 2px 7px;
+  border-radius: 4px;
+  letter-spacing: 0.04em;
+}
+
+.badgeStudless {
+  display: inline-block;
+  background: #0ea5e9;
+  color: #fff;
+  font-size: 11px;
+  font-weight: 700;
+  padding: 2px 7px;
+  border-radius: 4px;
+  letter-spacing: 0.03em;
+}
+

frontend/src/components/ReservationModal.jsx

@@ -0,0 +1,191 @@
+import { useState, useEffect } from 'react';
+import { format } from 'date-fns';
+import styles from './ReservationModal.module.css';
+
+const PERIOD_OPTIONS = [
+  { value: '', label: '指定なし' },
+  { value: '午前', label: '午前' },
+  { value: '午後', label: '午後' },
+];
+
+export default function ReservationModal({ cars, reservation, onSave, onDelete, onClose }) {
+  const isEdit = !!reservation?.id;
+
+  const [carId, setCarId] = useState('');
+  const [startDate, setStartDate] = useState('');
+  const [startPeriod, setStartPeriod] = useState('');
+  const [endDate, setEndDate] = useState('');
+  const [endPeriod, setEndPeriod] = useState('');
+  const [customerName, setCustomerName] = useState('');
+  const [notes, setNotes] = useState('');
+  const [submitting, setSubmitting] = useState(false);
+
+  useEffect(() => {
+    if (reservation) {
+      setCarId(String(reservation.car_id || (cars[0]?.id ?? '')));
+      setStartDate(reservation.start_date || format(new Date(), 'yyyy-MM-dd'));
+      setStartPeriod(reservation.start_period || '');
+      setEndDate(reservation.end_date || format(new Date(), 'yyyy-MM-dd'));
+      setEndPeriod(reservation.end_period || '');
+      setCustomerName(reservation.customer_name || '');
+      setNotes(reservation.notes || '');
+    }
+  }, [reservation, cars]);
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    if (!carId || !startDate || !endDate) return;
+    if (startDate > endDate) {
+      alert('開始日は終了日以前に設定してください');
+      return;
+    }
+    try {
+      setSubmitting(true);
+      await onSave({
+        car_id: Number(carId),
+        start_date: startDate,
+        start_period: startPeriod,
+        end_date: endDate,
+        end_period: endPeriod,
+        customer_name: customerName,
+        notes,
+      });
+    } finally {
+      setSubmitting(false);
+    }
+  };
+
+  const handleDelete = async () => {
+    if (!confirm('この予約を削除しますか？')) return;
+    try {
+      setSubmitting(true);
+      await onDelete(reservation.id);
+    } finally {
+      setSubmitting(false);
+    }
+  };
+
+  return (
+    <div className={styles.overlay} onMouseDown={(e) => e.target === e.currentTarget && onClose()}>
+      <div className={styles.modal}>
+        <div className={styles.modalHeader}>
+          <h2 className={styles.modalTitle}>
+            {isEdit ? '予約を編集' : '新しい予約を作成'}
+          </h2>
+          <button className={styles.closeBtn} onClick={onClose}>✕</button>
+        </div>
+
+        <form className={styles.form} onSubmit={handleSubmit}>
+          <div className={styles.field}>
+            <label className={styles.label}>代車 <span className={styles.required}>*</span></label>
+            <select
+              className={styles.select}
+              value={carId}
+              onChange={(e) => setCarId(e.target.value)}
+              required
+            >
+              <option value="">選択してください</option>
+              {cars.map((car) => (
+                <option key={car.id} value={car.id}>{car.name}</option>
+              ))}
+            </select>
+          </div>
+
+          <div className={styles.fieldRow}>
+            <div className={styles.field}>
+              <label className={styles.label}>開始日 <span className={styles.required}>*</span></label>
+              <input
+                type="date"
+                className={styles.input}
+                value={startDate}
+                onChange={(e) => setStartDate(e.target.value)}
+                required
+              />
+            </div>
+            <div className={styles.field}>
+              <label className={styles.label}>開始時間帯</label>
+              <select
+                className={styles.select}
+                value={startPeriod}
+                onChange={(e) => setStartPeriod(e.target.value)}
+              >
+                {PERIOD_OPTIONS.map((o) => (
+                  <option key={o.value} value={o.value}>{o.label}</option>
+                ))}
+              </select>
+            </div>
+          </div>
+
+          <div className={styles.fieldRow}>
+            <div className={styles.field}>
+              <label className={styles.label}>終了日 <span className={styles.required}>*</span></label>
+              <input
+                type="date"
+                className={styles.input}
+                value={endDate}
+                min={startDate}
+                onChange={(e) => setEndDate(e.target.value)}
+                required
+              />
+            </div>
+            <div className={styles.field}>
+              <label className={styles.label}>終了時間帯</label>
+              <select
+                className={styles.select}
+                value={endPeriod}
+                onChange={(e) => setEndPeriod(e.target.value)}
+              >
+                {PERIOD_OPTIONS.map((o) => (
+                  <option key={o.value} value={o.value}>{o.label}</option>
+                ))}
+              </select>
+            </div>
+          </div>
+
+          <div className={styles.field}>
+            <label className={styles.label}>お客様名</label>
+            <input
+              type="text"
+              className={styles.input}
+              placeholder="例：山田 太郎"
+              value={customerName}
+              onChange={(e) => setCustomerName(e.target.value)}
+            />
+          </div>
+
+          <div className={styles.field}>
+            <label className={styles.label}>備考</label>
+            <textarea
+              className={styles.textarea}
+              placeholder="メモを入力..."
+              value={notes}
+              onChange={(e) => setNotes(e.target.value)}
+              rows={3}
+            />
+          </div>
+
+          <div className={styles.actions}>
+            {isEdit && (
+              <button
+                type="button"
+                className={styles.btnDelete}
+                onClick={handleDelete}
+                disabled={submitting}
+              >
+                削除
+              </button>
+            )}
+            <div className={styles.rightActions}>
+              <button type="button" className={styles.btnCancel} onClick={onClose} disabled={submitting}>
+                キャンセル
+              </button>
+              <button type="submit" className={styles.btnSave} disabled={submitting}>
+                {submitting ? '保存中...' : (isEdit ? '更新' : '作成')}
+              </button>
+            </div>
+          </div>
+        </form>
+      </div>
+    </div>
+  );
+}

frontend/src/components/ReservationModal.module.css

@@ -0,0 +1,177 @@
+.overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0,0,0,0.45);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+  padding: 16px;
+}
+
+.modal {
+  background: white;
+  border-radius: 12px;
+  width: 100%;
+  max-width: 520px;
+  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
+  overflow: hidden;
+}
+
+.modalHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 20px 24px 16px;
+  border-bottom: 1px solid #e5e7eb;
+}
+
+.modalTitle {
+  font-size: 18px;
+  font-weight: 700;
+  color: #111827;
+}
+
+.closeBtn {
+  background: none;
+  border: none;
+  font-size: 18px;
+  color: #6b7280;
+  width: 32px;
+  height: 32px;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: background 0.15s;
+}
+
+.closeBtn:hover {
+  background: #f3f4f6;
+  color: #374151;
+}
+
+.form {
+  padding: 20px 24px 24px;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  flex: 1;
+}
+
+.fieldRow {
+  display: flex;
+  gap: 16px;
+}
+
+.label {
+  font-size: 13px;
+  font-weight: 600;
+  color: #374151;
+}
+
+.required {
+  color: #ef4444;
+}
+
+.input,
+.select {
+  border: 1.5px solid #d1d5db;
+  border-radius: 7px;
+  padding: 9px 12px;
+  font-size: 14px;
+  outline: none;
+  transition: border-color 0.15s;
+  background: white;
+  width: 100%;
+}
+
+.input:focus,
+.select:focus {
+  border-color: #1a56db;
+}
+
+.textarea {
+  border: 1.5px solid #d1d5db;
+  border-radius: 7px;
+  padding: 9px 12px;
+  font-size: 14px;
+  outline: none;
+  transition: border-color 0.15s;
+  resize: vertical;
+  width: 100%;
+  font-family: inherit;
+}
+
+.textarea:focus {
+  border-color: #1a56db;
+}
+
+.actions {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-top: 4px;
+}
+
+.rightActions {
+  display: flex;
+  gap: 10px;
+  margin-left: auto;
+}
+
+.btnSave {
+  background: #1a56db;
+  color: white;
+  border: none;
+  padding: 9px 24px;
+  border-radius: 7px;
+  font-size: 14px;
+  font-weight: 600;
+  transition: background 0.15s;
+}
+
+.btnSave:hover:not(:disabled) {
+  background: #1447c0;
+}
+
+.btnSave:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.btnCancel {
+  background: #f3f4f6;
+  border: 1.5px solid #d1d5db;
+  color: #374151;
+  padding: 9px 20px;
+  border-radius: 7px;
+  font-size: 14px;
+  font-weight: 500;
+  transition: background 0.15s;
+}
+
+.btnCancel:hover:not(:disabled) {
+  background: #e5e7eb;
+}
+
+.btnDelete {
+  background: #fee2e2;
+  border: 1.5px solid #fca5a5;
+  color: #dc2626;
+  padding: 9px 20px;
+  border-radius: 7px;
+  font-size: 14px;
+  font-weight: 500;
+  transition: background 0.15s;
+}
+
+.btnDelete:hover:not(:disabled) {
+  background: #fecaca;
+}

frontend/src/components/ScheduleView.jsx

@@ -0,0 +1,642 @@
+import { useState, useEffect, useRef, useCallback } from 'react';
+import { format, addDays, startOfWeek, 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 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 = 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' &&
+  ('ontouchstart' in window || navigator.maxTouchPoints > 0);
+
+// Palette for reservation colors (cycle through them by car index)
+const COLORS = [
+  { bg: '#dbeafe', border: '#3b82f6', text: '#1e3a8a' },
+  { bg: '#dcfce7', border: '#22c55e', text: '#14532d' },
+  { bg: '#fef9c3', border: '#eab308', text: '#713f12' },
+  { bg: '#fce7f3', border: '#ec4899', text: '#831843' },
+  { bg: '#ede9fe', border: '#8b5cf6', text: '#3b0764' },
+  { bg: '#ffedd5', border: '#f97316', text: '#7c2d12' },
+  { bg: '#e0f2fe', border: '#0ea5e9', text: '#0c4a6e' },
+  { bg: '#f0fdf4', border: '#16a34a', text: '#14532d' },
+];
+
+function getColor(index) {
+  return COLORS[index % COLORS.length];
+}
+
+function dateToStr(date) {
+  return format(date, 'yyyy-MM-dd');
+}
+
+export default function ScheduleView({ reloadKey = 0 }) {
+  const [cars, setCars] = useState([]);
+  const [reservations, setReservations] = useState([]);
+  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 })
+  );
+
+  // Drag-to-create state
+  const [creating, setCreating] = useState(null);
+  // { carId, startDateStr, endDateStr }
+
+  // Drag-to-move state
+  const [moving, setMoving] = useState(null);
+  // { reservation, grabDayOffset, currentCarId, currentStartDate }
+
+  // Modal state
+  const [modal, setModal] = useState(null);
+  // null | { mode: 'create', prefill: {...} } | { mode: 'edit', reservation: {...} }
+
+  // Context menu state (right-click on reservation)
+  const [contextMenu, setContextMenu] = useState(null);
+  // null | { x, y, reservation }
+
+  const gridRef = useRef(null);
+  const movingRef = useRef(null); // keeps latest moving state for event handlers
+
+  // Generate the array of dates shown
+  const dates = Array.from({ length: DAYS_SHOWN }, (_, i) => addDays(viewStart, i));
+
+  // --- Data loading ---
+  const loadData = useCallback(async () => {
+    try {
+      setLoading(true);
+      const [carsData, resData] = await Promise.all([api.getCars(), api.getReservations()]);
+      setCars(carsData);
+      setReservations(resData);
+      setError(null);
+    } catch (e) {
+      setError(e.message);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    loadData();
+  }, [loadData, reloadKey]);
+
+  // --- Navigation ---
+  const prevWeek = () => setViewStart((d) => addDays(d, -7));
+  const nextWeek = () => setViewStart((d) => addDays(d, 7));
+  const goToday = () => setViewStart(startOfWeek(new Date(), { weekStartsOn: 1 }));
+
+  // --- Grid position helpers ---
+  // 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.min(Math.floor(x / CELL_WIDTH), HALF_SLOTS - 1);
+  }, []);
+
+  const getRowFromY = useCallback((clientY) => {
+    if (!gridRef.current) return -1;
+    const rect = gridRef.current.getBoundingClientRect();
+    const scrollTop = gridRef.current.scrollTop;
+    const y = clientY - rect.top + scrollTop - HEADER_HEIGHT;
+    if (y < 0) return -1;
+    return Math.floor(y / ROW_HEIGHT);
+  }, []);
+
+  // --- Cell drag to create ---
+  const handleCellMouseDown = (e, carId, slot) => {
+    if (isTouchDevice) return; // drag-to-create is mouse-only
+    if (e.button !== 0) return;
+    e.preventDefault();
+    setCreating({ carId, startSlot: slot, endSlot: slot });
+  };
+
+  // --- Cell tap to create (touch devices) ---
+  const handleCellClick = useCallback((e, carId) => {
+    if (!isTouchDevice) return;
+    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, start_period: period, end_date: dateStr, end_period: period },
+      });
+    }
+  }, [dates, getSlotFromX]);
+
+  const handleGridMouseMove = useCallback((e) => {
+    if (creating) {
+      const slot = getSlotFromX(e.clientX);
+      if (slot >= 0 && slot < HALF_SLOTS) {
+        setCreating((prev) => {
+          if (!prev) return null;
+          const s = prev.startSlot;
+          const h = slot;
+          return {
+            ...prev,
+            endSlot: h >= s ? h : s,
+            startSlot: h < s ? h : prev.startSlot,
+          };
+        });
+      }
+    }
+
+    if (moving) {
+      const slot = getSlotFromX(e.clientX);
+      const row = getRowFromY(e.clientY);
+      movingRef.current = { ...movingRef.current };
+
+      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) {
+          newCarId = cars[row].id;
+        }
+
+        setMoving((prev) => prev ? {
+          ...prev,
+          currentCarId: newCarId,
+          currentStartSlot: clampedStartSlot,
+          currentStartDate: newStartDate,
+          currentStartPeriod: newStartPeriod,
+          currentEndDate: newEndDate,
+          currentEndPeriod: newEndPeriod,
+          col: clampedStartSlot,
+          row: row >= 0 && row < cars.length ? row : prev.row,
+        } : null);
+      }
+    }
+  }, [creating, moving, dates, cars, getSlotFromX, getRowFromY]);
+
+  const handleGridMouseUp = useCallback(async (e) => {
+    if (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: 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, origStartSlot, currentStartSlot, currentStartDate, currentStartPeriod, currentEndDate, currentEndPeriod } = moving;
+      setMoving(null);
+      movingRef.current = null;
+
+      // Only update if something changed
+      if (
+        currentCarId !== reservation.car_id ||
+        currentStartSlot !== origStartSlot
+      ) {
+        try {
+          await api.updateReservation(reservation.id, {
+            car_id: currentCarId,
+            start_date: currentStartDate,
+            end_date: currentEndDate,
+            customer_name: reservation.customer_name,
+            notes: reservation.notes,
+            start_period: currentStartPeriod,
+            end_period: currentEndPeriod,
+          });
+          await loadData();
+        } catch (err) {
+          setError(`予約の移動に失敗しました: ${err.message}`);
+          await loadData();
+        }
+      }
+    }
+  }, [creating, moving, dates, loadData]);
+
+  useEffect(() => {
+    window.addEventListener('mousemove', handleGridMouseMove);
+    window.addEventListener('mouseup', handleGridMouseUp);
+    return () => {
+      window.removeEventListener('mousemove', handleGridMouseMove);
+      window.removeEventListener('mouseup', handleGridMouseUp);
+    };
+  }, [handleGridMouseMove, handleGridMouseUp]);
+
+  // Close context menu on any click or Escape
+  useEffect(() => {
+    if (!contextMenu) return;
+    const close = () => setContextMenu(null);
+    const onKey = (e) => { if (e.key === 'Escape') close(); };
+    window.addEventListener('click', close);
+    window.addEventListener('keydown', onKey);
+    return () => {
+      window.removeEventListener('click', close);
+      window.removeEventListener('keydown', onKey);
+    };
+  }, [contextMenu]);
+
+  // --- Reservation drag to move ---
+  const handleReservationMouseDown = (e, reservation) => {
+    e.stopPropagation();
+    if (isTouchDevice) return; // drag-to-move is mouse-only
+    if (e.button !== 0) return;
+    e.preventDefault();
+
+    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,
+      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,
+      currentEndPeriod: reservation.end_period || '午後',
+      col: startSlot,
+      row: carRow,
+    });
+  };
+
+  // --- Modal save/delete handlers ---
+  const handleModalSave = async (data) => {
+    try {
+      if (modal.mode === 'edit') {
+        await api.updateReservation(modal.reservation.id, data);
+      } else {
+        await api.createReservation(data);
+      }
+      setModal(null);
+      await loadData();
+    } catch (e) {
+      setError(`予約の保存に失敗しました: ${e.message}`);
+    }
+  };
+
+  const handleModalDelete = async (id) => {
+    try {
+      await api.deleteReservation(id);
+      setModal(null);
+      await loadData();
+    } catch (e) {
+      setError(`予約の削除に失敗しました: ${e.message}`);
+    }
+  };
+
+  // --- Rendering ---
+  // Build a map of reservations visible in the date range
+  const viewStartStr = dateToStr(viewStart);
+  const viewEndStr = dateToStr(dates[dates.length - 1]);
+
+  const visibleReservations = reservations.filter(
+    (r) => r.end_date >= viewStartStr && r.start_date <= viewEndStr
+  );
+
+  // 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 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 col = moving.col ?? 0;
+    const durationSlots = moving.durationSlots;
+    const left = col * CELL_WIDTH;
+    const width = (durationSlots + 1) * CELL_WIDTH;
+    return { col, left, width, row: moving.row };
+  })() : null;
+
+  // Today column
+  const todayStr = dateToStr(new Date());
+
+  const carColorMap = {};
+  cars.forEach((car, i) => { carColorMap[car.id] = getColor(i); });
+
+  return (
+    <div className={styles.container}>
+      {/* Toolbar */}
+      <div className={styles.toolbar}>
+        <div className={styles.navGroup}>
+          <button className={styles.toolBtn} onClick={prevWeek}>‹ 前週</button>
+          <button className={styles.toolBtn} onClick={goToday}>今日</button>
+          <button className={styles.toolBtn} onClick={nextWeek}>次週 ›</button>
+        </div>
+        <div className={styles.dateRange}>
+          {format(viewStart, 'yyyy年M月d日', { locale: ja })} 〜{' '}
+          {format(dates[dates.length - 1], 'yyyy年M月d日', { locale: ja })}
+        </div>
+        <button
+          className={styles.addBtn}
+          onClick={() =>
+            setModal({
+              mode: 'create',
+              prefill: {
+                car_id: cars[0]?.id,
+                start_date: todayStr,
+                end_date: todayStr,
+              },
+            })
+          }
+        >
+          + 予約を追加
+        </button>
+      </div>
+
+      {error && <div className={styles.error}>エラー: {error}</div>}
+
+      {/* Grid */}
+      <div
+        className={styles.gridWrapper}
+        ref={gridRef}
+        onMouseLeave={() => {
+          // don't cancel on leave — handled by global events
+        }}
+      >
+        {loading && (
+          <div
+            className={styles.loadingOverlay}
+            style={{ height: HEADER_HEIGHT }}
+          >
+            読み込み中...
+          </div>
+        )}
+        <div
+          className={styles.grid}
+          style={{ width: LABEL_WIDTH + DAYS_SHOWN * 2 * CELL_WIDTH }}
+        >
+          {/* Header row */}
+          <div className={styles.headerRow} style={{ height: HEADER_HEIGHT }}>
+            {/* Corner cell */}
+            <div
+              className={styles.cornerCell}
+              style={{ width: LABEL_WIDTH, height: HEADER_HEIGHT }}
+            />
+            {/* Date headers — each day spans two half-day slots (午前 + 午後) */}
+            {dates.map((date) => {
+              const ds = dateToStr(date);
+              const isToday = ds === todayStr;
+              const dow = format(date, 'E', { locale: ja });
+              const isWeekend = dow === '土' || dow === '日';
+              return (
+                <div
+                  key={ds}
+                  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>
+
+          {/* Car rows */}
+          {cars.map((car, carIdx) => {
+            const color = carColorMap[car.id];
+            const carReservations = visibleReservations.filter((r) => {
+              if (moving && r.id === moving.reservation.id) return false; // hide while moving
+              return r.car_id === car.id;
+            });
+
+            // Creating highlight for this row
+            const isCreatingRow = creating && creating.carId === car.id;
+            let creatingLeft = 0, creatingWidth = 0;
+            if (isCreatingRow) {
+              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
+            const showGhost = moving && moving.row === carIdx && movingGhost;
+
+            return (
+              <div key={car.id} className={styles.carRow} style={{ height: ROW_HEIGHT }}>
+                {/* Car label */}
+                <div
+                  className={styles.carLabel}
+                  style={{ width: LABEL_WIDTH, height: ROW_HEIGHT }}
+                  title={car.description || car.name}
+                >
+                  <span className={styles.carDot} style={{ background: color.border }} />
+                  <span className={styles.carLabelContent}>
+                    <span className={styles.carName}>{car.name}</span>
+                    <span className={styles.carBadges}>
+                      {car.has_etc ? <span className={styles.badgeEtc}>ETC</span> : null}
+                      {car.tire_type === 'スタッドレス' ? <span className={styles.badgeStudless}>スタッドレス</span> : null}
+                    </span>
+                    {isInspectionExpirySoon(car.inspection_expiry) ? (
+                      <span
+                        className={`${styles.badgeWarn} ${styles.badgeWarnWide}`}
+                        title={`車検満了日: ${car.inspection_expiry}（まもなく期限切れ）`}
+                      >
+                        ⚠️ 車検
+                      </span>
+                    ) : null}
+                  </span>
+                </div>
+
+                {/* Day cells — two per day (午前 then 午後) */}
+                <div
+                  className={styles.cellArea}
+                  style={{ width: DAYS_SHOWN * 2 * CELL_WIDTH, height: ROW_HEIGHT }}
+                  onClick={(e) => handleCellClick(e, car.id)}
+                >
+                  {dates.flatMap((date, dayIdx) => {
+                    const ds = dateToStr(date);
+                    const isToday = ds === todayStr;
+                    const dow = format(date, 'E', { locale: ja });
+                    const isWeekend = dow === '土' || dow === '日';
+                    return ['午前', '午後'].map((period, pIdx) => (
+                      <div
+                        key={`${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, dayIdx * 2 + pIdx)}
+                      />
+                    ));
+                  })}
+
+                  {/* Creating highlight */}
+                  {isCreatingRow && creatingWidth > 0 && (
+                    <div
+                      className={styles.creatingHighlight}
+                      style={{
+                        left: creatingLeft,
+                        width: creatingWidth,
+                        top: 4,
+                        height: ROW_HEIGHT - 8,
+                      }}
+                    />
+                  )}
+
+                  {/* Ghost while moving */}
+                  {showGhost && (
+                    <div
+                      className={styles.reservationBlock}
+                      style={{
+                        left: movingGhost.left,
+                        width: movingGhost.width,
+                        top: 5,
+                        height: ROW_HEIGHT - 10,
+                        background: color.bg,
+                        borderColor: color.border,
+                        color: color.text,
+                        opacity: 0.6,
+                        cursor: 'grabbing',
+                      }}
+                    >
+                      <span className={styles.blockText}>
+                        {moving.reservation.customer_name || '予約'}
+                      </span>
+                    </div>
+                  )}
+
+                  {/* Reservation blocks */}
+                  {carReservations.map((r) => {
+                    const { left, width } = getReservationLayout(r);
+                    return (
+                      <div
+                        key={r.id}
+                        className={styles.reservationBlock}
+                        style={{
+                          left,
+                          width: width - 4,
+                          top: 5,
+                          height: ROW_HEIGHT - 10,
+                          background: color.bg,
+                          borderColor: color.border,
+                          color: color.text,
+                          cursor: isTouchDevice ? 'pointer' : 'grab',
+                        }}
+                        onMouseDown={(e) => handleReservationMouseDown(e, r)}
+                        onClick={(e) => {
+                          if (!moving) {
+                            e.stopPropagation();
+                            setModal({ mode: 'edit', reservation: r });
+                          }
+                        }}
+                        onContextMenu={(e) => {
+                          e.preventDefault();
+                          e.stopPropagation();
+                          setContextMenu({ x: e.clientX, y: e.clientY, reservation: r });
+                        }}
+                        title={formatReservationTooltip(r)}
+                      >
+                        <span className={styles.blockText}>
+                          {r.customer_name || '予約'}
+                        </span>
+                        {width > 80 && (
+                          <span className={styles.blockDates}>
+                            {formatDateRange(r.start_date, r.start_period, r.end_date, r.end_period)}
+                          </span>
+                        )}
+                      </div>
+                    );
+                  })}
+                </div>
+              </div>
+            );
+          })}
+
+          {cars.length === 0 && !loading && (
+            <div className={styles.noCars}>
+              代車が登録されていません。「代車管理」から追加してください。
+            </div>
+          )}
+        </div>
+      </div>
+
+      {/* Reservation Modal */}
+      {modal && (
+        <ReservationModal
+          cars={cars}
+          reservation={modal.mode === 'edit' ? modal.reservation : modal.prefill}
+          onSave={handleModalSave}
+          onDelete={handleModalDelete}
+          onClose={() => setModal(null)}
+        />
+      )}
+
+      {/* Right-click context menu */}
+      {contextMenu && (
+        <div
+          className={styles.contextMenu}
+          style={{ left: contextMenu.x, top: contextMenu.y }}
+          onClick={(e) => e.stopPropagation()}
+        >
+          <button
+            className={styles.contextMenuItem}
+            onClick={() => {
+              setModal({ mode: 'edit', reservation: contextMenu.reservation });
+              setContextMenu(null);
+            }}
+          >
+            ✏️ 編集
+          </button>
+          <button
+            className={`${styles.contextMenuItem} ${styles.contextMenuItemDelete}`}
+            onClick={async () => {
+              setContextMenu(null);
+              await handleModalDelete(contextMenu.reservation.id);
+            }}
+          >
+            🗑️ 削除
+          </button>
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/components/ScheduleView.module.css

@@ -0,0 +1,428 @@
+.container {
+  display: flex;
+  flex-direction: column;
+  height: calc(100vh - 56px);
+  overflow: hidden;
+}
+
+.toolbar {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 10px 20px;
+  background: white;
+  border-bottom: 1px solid #e5e7eb;
+  flex-shrink: 0;
+  flex-wrap: wrap;
+}
+
+.navGroup {
+  display: flex;
+  gap: 4px;
+}
+
+.toolBtn {
+  background: #f3f4f6;
+  border: 1.5px solid #d1d5db;
+  color: #374151;
+  padding: 6px 14px;
+  border-radius: 6px;
+  font-size: 13px;
+  font-weight: 500;
+  transition: background 0.15s;
+}
+
+.toolBtn:hover {
+  background: #e5e7eb;
+}
+
+.dateRange {
+  font-size: 14px;
+  font-weight: 600;
+  color: #374151;
+  flex: 1;
+  text-align: center;
+}
+
+.addBtn {
+  background: #1a56db;
+  color: white;
+  border: none;
+  padding: 7px 18px;
+  border-radius: 6px;
+  font-size: 13px;
+  font-weight: 600;
+  transition: background 0.15s;
+  white-space: nowrap;
+}
+
+.addBtn:hover {
+  background: #1447c0;
+}
+
+.error {
+  background: #fee2e2;
+  color: #dc2626;
+  padding: 10px 20px;
+  font-size: 14px;
+}
+
+.loading {
+  padding: 20px;
+  text-align: center;
+  color: #6b7280;
+  font-size: 14px;
+}
+
+.loadingOverlay {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  z-index: 40;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #4b5563;
+  font-size: 14px;
+  font-weight: 600;
+  background: rgba(255, 255, 255, 0.92);
+  border-bottom: 2px solid #d1d5db;
+  pointer-events: none;
+}
+
+/* Grid wrapper - scrollable */
+.gridWrapper {
+  flex: 1;
+  overflow: auto;
+  position: relative;
+  user-select: none;
+}
+
+.grid {
+  position: relative;
+  min-height: 100%;
+}
+
+/* Sticky header row */
+.headerRow {
+  display: flex;
+  position: sticky;
+  top: 0;
+  z-index: 20;
+  background: white;
+  border-bottom: 2px solid #d1d5db;
+}
+
+.cornerCell {
+  flex-shrink: 0;
+  background: #f9fafb;
+  border-right: 2px solid #d1d5db;
+  border-bottom: 2px solid #d1d5db;
+  position: sticky;
+  left: 0;
+  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;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  border-right: 1px solid #e5e7eb;
+  gap: 2px;
+  background: white;
+}
+
+.todayHeader {
+  background: #eff6ff;
+}
+
+.weekendHeader {
+  background: #fafafa;
+}
+
+.dateDay {
+  font-size: 16px;
+  font-weight: 700;
+  color: #111827;
+  line-height: 1;
+}
+
+.dateDow {
+  font-size: 11px;
+  color: #6b7280;
+  line-height: 1;
+}
+
+.weekendDow {
+  color: #ef4444;
+}
+
+/* Car rows */
+.carRow {
+  display: flex;
+  border-bottom: 1px solid #e5e7eb;
+  position: relative;
+}
+
+.carRow:hover .cellArea {
+  background: #fafafa;
+}
+
+.carLabel {
+  flex-shrink: 0;
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  padding: 6px 12px;
+  border-right: 2px solid #d1d5db;
+  background: white;
+  position: sticky;
+  left: 0;
+  z-index: 10;
+  box-shadow: 2px 0 4px rgba(0,0,0,0.04);
+}
+
+.carDot {
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+  flex-shrink: 0;
+  align-self: center;
+}
+
+.carLabelContent {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  min-width: 0;
+  flex: 1;
+}
+
+.carName {
+  font-size: 13px;
+  font-weight: 600;
+  color: #374151;
+  width: 100%;
+  white-space: normal;
+  overflow-wrap: anywhere;
+  word-break: break-word;
+  line-height: 1.2;
+}
+
+.carBadges {
+  display: flex;
+  gap: 4px;
+  flex-wrap: nowrap;
+}
+
+.badgeEtc {
+  background: #7c3aed;
+  color: #fff;
+  font-size: 10px;
+  font-weight: 700;
+  padding: 1px 5px;
+  border-radius: 4px;
+  white-space: nowrap;
+  letter-spacing: 0.03em;
+}
+
+.badgeStudless {
+  background: #0ea5e9;
+  color: #fff;
+  font-size: 10px;
+  font-weight: 700;
+  padding: 1px 5px;
+  border-radius: 4px;
+  white-space: nowrap;
+  letter-spacing: 0.03em;
+}
+
+.badgeWarn {
+  background: #d97706;
+  color: #fff;
+  font-size: 10px;
+  font-weight: 700;
+  padding: 1px 5px;
+  border-radius: 4px;
+  white-space: nowrap;
+  letter-spacing: 0.03em;
+  cursor: default;
+}
+
+.badgeWarnWide {
+  display: flex;
+  width: 108%;
+  justify-content: center;
+  box-sizing: border-box;
+}
+
+/* Cell area */
+.cellArea {
+  display: flex;
+  position: relative;
+  flex-shrink: 0;
+}
+
+.cell {
+  flex-shrink: 0;
+  border-right: 1px solid #f0f0f0;
+  cursor: crosshair;
+  transition: background 0.1s;
+}
+
+.cellTouch {
+  cursor: pointer;
+}
+
+.cell:hover {
+  background: rgba(26, 86, 219, 0.04);
+}
+
+.cellDayEnd {
+  border-right: 1px solid #d1d5db;
+}
+
+.todayCell {
+  background: rgba(59, 130, 246, 0.06);
+}
+
+.weekendCell {
+  background: rgba(0,0,0,0.015);
+}
+
+/* Highlight while dragging to create */
+.creatingHighlight {
+  position: absolute;
+  border-radius: 6px;
+  background: rgba(26, 86, 219, 0.2);
+  border: 2px dashed #1a56db;
+  pointer-events: none;
+  z-index: 5;
+}
+
+/* Reservation block */
+.reservationBlock {
+  position: absolute;
+  border-radius: 6px;
+  border: 1.5px solid;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  padding: 2px 8px;
+  z-index: 6;
+  transition: box-shadow 0.1s;
+  min-width: 0;
+}
+
+.reservationBlock:hover {
+  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
+  z-index: 7;
+}
+
+.blockText {
+  font-size: 12px;
+  font-weight: 600;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  line-height: 1.3;
+}
+
+.blockDates {
+  font-size: 10px;
+  opacity: 0.75;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  line-height: 1.2;
+}
+
+.noCars {
+  padding: 40px 20px;
+  text-align: center;
+  color: #6b7280;
+  font-size: 14px;
+}
+
+/* Right-click context menu */
+.contextMenu {
+  position: fixed;
+  background: white;
+  border: 1px solid #d1d5db;
+  border-radius: 8px;
+  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
+  z-index: 1000;
+  min-width: 140px;
+  overflow: hidden;
+  padding: 4px 0;
+}
+
+.contextMenuItem {
+  display: block;
+  width: 100%;
+  text-align: left;
+  background: none;
+  border: none;
+  padding: 9px 16px;
+  font-size: 13px;
+  color: #374151;
+  cursor: pointer;
+  transition: background 0.1s;
+}
+
+.contextMenuItem:hover {
+  background: #f3f4f6;
+}
+
+.contextMenuItemDelete {
+  color: #dc2626;
+}
+
+.contextMenuItemDelete:hover {
+  background: #fee2e2;
+}

frontend/src/components/TimelineView.jsx

@@ -0,0 +1,355 @@
+import { useState, useEffect, useRef, useCallback } from 'react';
+import { format, addDays, addMonths, startOfMonth, endOfMonth, parseISO, differenceInDays } from 'date-fns';
+import { ja } from 'date-fns/locale';
+import { api } from '../api.js';
+import { formatDateRange, formatReservationTooltip } from '../utils/carUtils.js';
+import ReservationModal from './ReservationModal.jsx';
+import styles from './TimelineView.module.css';
+
+const ROW_HEIGHT = 48; // px per reservation row
+const LABEL_WIDTH = 180; // px for reservation info column
+const HEADER_HEIGHT = 60; // px for date header
+const DAY_WIDTH = 36; // px per day column
+const BAR_PADDING = 4; // px gap between bar and row edge
+
+// Same colour palette as ScheduleView
+const COLORS = [
+  { bg: '#dbeafe', border: '#3b82f6', text: '#1e3a8a' },
+  { bg: '#dcfce7', border: '#22c55e', text: '#14532d' },
+  { bg: '#fef9c3', border: '#eab308', text: '#713f12' },
+  { bg: '#fce7f3', border: '#ec4899', text: '#831843' },
+  { bg: '#ede9fe', border: '#8b5cf6', text: '#3b0764' },
+  { bg: '#ffedd5', border: '#f97316', text: '#7c2d12' },
+  { bg: '#e0f2fe', border: '#0ea5e9', text: '#0c4a6e' },
+  { bg: '#f0fdf4', border: '#16a34a', text: '#14532d' },
+];
+
+function getColor(index) {
+  return COLORS[index % COLORS.length];
+}
+
+function dateToStr(date) {
+  return format(date, 'yyyy-MM-dd');
+}
+
+export default function TimelineView({ reloadKey = 0 }) {
+  const [cars, setCars] = useState([]);
+  const [reservations, setReservations] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState(null);
+  const [modal, setModal] = useState(null);
+  const [contextMenu, setContextMenu] = useState(null);
+
+  // View window: show the current month by default
+  const [viewStart, setViewStart] = useState(() => startOfMonth(new Date()));
+  const [viewEnd, setViewEnd] = useState(() => endOfMonth(new Date()));
+
+  const gridRef = useRef(null);
+
+  const days = (() => {
+    const result = [];
+    let d = viewStart;
+    while (d <= viewEnd) {
+      result.push(d);
+      d = addDays(d, 1);
+    }
+    return result;
+  })();
+
+  const totalWidth = LABEL_WIDTH + days.length * DAY_WIDTH;
+  const todayStr = dateToStr(new Date());
+
+  // --- Data loading ---
+  const loadData = useCallback(async () => {
+    try {
+      setLoading(true);
+      const [carsData, resData] = await Promise.all([api.getCars(), api.getReservations()]);
+      setCars(carsData);
+      setReservations(resData);
+      setError(null);
+    } catch (e) {
+      setError(e.message);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    loadData();
+  }, [loadData, reloadKey]);
+
+  // Close context menu on click / Escape
+  useEffect(() => {
+    if (!contextMenu) return;
+    const close = () => setContextMenu(null);
+    const onKey = (e) => { if (e.key === 'Escape') close(); };
+    window.addEventListener('click', close);
+    window.addEventListener('keydown', onKey);
+    return () => {
+      window.removeEventListener('click', close);
+      window.removeEventListener('keydown', onKey);
+    };
+  }, [contextMenu]);
+
+  // --- Navigation ---
+  const prevMonth = () => {
+    const start = addMonths(viewStart, -1);
+    setViewStart(startOfMonth(start));
+    setViewEnd(endOfMonth(start));
+  };
+  const nextMonth = () => {
+    const start = addMonths(viewStart, 1);
+    setViewStart(startOfMonth(start));
+    setViewEnd(endOfMonth(start));
+  };
+  const goThisMonth = () => {
+    setViewStart(startOfMonth(new Date()));
+    setViewEnd(endOfMonth(new Date()));
+  };
+
+  // --- Handlers ---
+  const handleModalSave = async (data) => {
+    try {
+      if (modal.mode === 'edit') {
+        await api.updateReservation(modal.reservation.id, data);
+      } else {
+        await api.createReservation(data);
+      }
+      setModal(null);
+      await loadData();
+    } catch (e) {
+      setError(`予約の保存に失敗しました: ${e.message}`);
+    }
+  };
+
+  const handleModalDelete = async (id) => {
+    try {
+      await api.deleteReservation(id);
+      setModal(null);
+      await loadData();
+    } catch (e) {
+      setError(`予約の削除に失敗しました: ${e.message}`);
+    }
+  };
+
+  // Build car colour map
+  const carColorMap = {};
+  cars.forEach((car, i) => { carColorMap[car.id] = getColor(i); });
+
+  // Sort reservations by start_date then car
+  const sortedReservations = [...reservations].sort((a, b) => {
+    if (a.start_date !== b.start_date) return a.start_date < b.start_date ? -1 : 1;
+    return a.car_id - b.car_id;
+  });
+
+  const viewStartStr = dateToStr(viewStart);
+  const viewEndStr = dateToStr(viewEnd);
+
+  // Filter to reservations that overlap the view window
+  const visibleReservations = sortedReservations.filter(
+    (r) => r.end_date >= viewStartStr && r.start_date <= viewEndStr
+  );
+
+  function getBarLayout(r) {
+    const clampedStart = r.start_date < viewStartStr ? viewStartStr : r.start_date;
+    const clampedEnd = r.end_date > viewEndStr ? viewEndStr : r.end_date;
+    const startOffset = differenceInDays(parseISO(clampedStart), viewStart);
+    const endOffset = differenceInDays(parseISO(clampedEnd), viewStart);
+    const left = startOffset * DAY_WIDTH;
+    const width = (endOffset - startOffset + 1) * DAY_WIDTH;
+    return { left, width };
+  }
+
+  return (
+    <div className={styles.container}>
+      {/* Toolbar */}
+      <div className={styles.toolbar}>
+        <div className={styles.navGroup}>
+          <button className={styles.toolBtn} onClick={prevMonth}>‹ 前月</button>
+          <button className={styles.toolBtn} onClick={goThisMonth}>今月</button>
+          <button className={styles.toolBtn} onClick={nextMonth}>次月 ›</button>
+        </div>
+        <div className={styles.monthLabel}>
+          {format(viewStart, 'yyyy年M月', { locale: ja })}
+        </div>
+        <button
+          className={styles.addBtn}
+          disabled={cars.length === 0}
+          onClick={() =>
+            setModal({
+              mode: 'create',
+              prefill: {
+                car_id: cars[0]?.id,
+                start_date: todayStr,
+                end_date: todayStr,
+              },
+            })
+          }
+        >
+          + 予約を追加
+        </button>
+      </div>
+
+      {error && <div className={styles.error}>エラー: {error}</div>}
+
+      {/* Timeline grid */}
+      <div className={styles.gridWrapper} ref={gridRef}>
+        {loading && (
+          <div
+            className={styles.loadingOverlay}
+            style={{ height: HEADER_HEIGHT }}
+          >
+            読み込み中...
+          </div>
+        )}
+        <div className={styles.grid} style={{ width: totalWidth }}>
+          {/* Sticky header: month/day labels */}
+          <div className={styles.headerRow} style={{ height: HEADER_HEIGHT }}>
+            {/* Corner */}
+            <div
+              className={styles.cornerCell}
+              style={{ width: LABEL_WIDTH, height: HEADER_HEIGHT }}
+            >
+              <span className={styles.cornerText}>予約一覧</span>
+            </div>
+            {/* Day columns */}
+            {days.map((date) => {
+              const ds = dateToStr(date);
+              const isToday = ds === todayStr;
+              const dow = format(date, 'E', { locale: ja });
+              const isWeekend = dow === '土' || dow === '日';
+              const isSun = dow === '日';
+              const isSat = dow === '土';
+              return (
+                <div
+                  key={ds}
+                  className={`${styles.dayHeader} ${isToday ? styles.todayHeader : ''} ${isWeekend ? styles.weekendHeader : ''}`}
+                  style={{ width: DAY_WIDTH, height: HEADER_HEIGHT }}
+                >
+                  <span className={styles.dayNum}>{format(date, 'd')}</span>
+                  <span className={`${styles.dayDow} ${isSun ? styles.sunDow : ''} ${isSat ? styles.satDow : ''}`}>{dow}</span>
+                </div>
+              );
+            })}
+          </div>
+
+          {/* Reservation rows */}
+          {visibleReservations.map((r) => {
+            const car = cars.find((c) => c.id === r.car_id);
+            const color = carColorMap[r.car_id] || COLORS[0];
+            const { left, width } = getBarLayout(r);
+
+            return (
+              <div key={r.id} className={styles.resRow} style={{ height: ROW_HEIGHT }}>
+                {/* Label: car + customer */}
+                <div
+                  className={styles.resLabel}
+                  style={{ width: LABEL_WIDTH, height: ROW_HEIGHT }}
+                >
+                  <span className={styles.carDot} style={{ background: color.border }} />
+                  <div className={styles.labelText}>
+                    <span className={styles.labelCar}>{car?.name ?? '—'}</span>
+                    <span className={styles.labelCustomer}>{r.customer_name || '(名前なし)'}</span>
+                  </div>
+                </div>
+
+                {/* Day cells (background) */}
+                <div
+                  className={styles.cellArea}
+                  style={{ width: days.length * DAY_WIDTH, height: ROW_HEIGHT, position: 'relative' }}
+                >
+                  {days.map((date) => {
+                    const ds = dateToStr(date);
+                    const isToday = ds === todayStr;
+                    const dow = format(date, 'E', { locale: ja });
+                    const isWeekend = dow === '土' || dow === '日';
+                    return (
+                      <div
+                        key={ds}
+                        className={`${styles.cell} ${isToday ? styles.todayCell : ''} ${isWeekend ? styles.weekendCell : ''}`}
+                        style={{ width: DAY_WIDTH, height: ROW_HEIGHT }}
+                      />
+                    );
+                  })}
+
+                  {/* Bar */}
+                  <div
+                    className={styles.bar}
+                    style={{
+                      left,
+                      width: width - BAR_PADDING,
+                      background: color.bg,
+                      borderColor: color.border,
+                      color: color.text,
+                    }}
+                    onClick={() => setModal({ mode: 'edit', reservation: r })}
+                    onContextMenu={(e) => {
+                      e.preventDefault();
+                      e.stopPropagation();
+                      setContextMenu({ x: e.clientX, y: e.clientY, reservation: r });
+                    }}
+                    title={formatReservationTooltip(r)}
+                  >
+                    <span className={styles.barText}>
+                      {r.customer_name || '予約'}
+                    </span>
+                    {width > 80 && (
+                      <span className={styles.barDates}>
+                        {formatDateRange(r.start_date, r.start_period, r.end_date, r.end_period)}
+                      </span>
+                    )}
+                  </div>
+                </div>
+              </div>
+            );
+          })}
+
+          {visibleReservations.length === 0 && !loading && (
+            <div className={styles.empty}>
+              この月には予約がありません。
+            </div>
+          )}
+        </div>
+      </div>
+
+      {/* Reservation Modal */}
+      {modal && (
+        <ReservationModal
+          cars={cars}
+          reservation={modal.mode === 'edit' ? modal.reservation : modal.prefill}
+          onSave={handleModalSave}
+          onDelete={handleModalDelete}
+          onClose={() => setModal(null)}
+        />
+      )}
+
+      {/* Right-click context menu */}
+      {contextMenu && (
+        <div
+          className={styles.contextMenu}
+          style={{ left: contextMenu.x, top: contextMenu.y }}
+          onClick={(e) => e.stopPropagation()}
+        >
+          <button
+            className={styles.contextMenuItem}
+            onClick={() => {
+              setModal({ mode: 'edit', reservation: contextMenu.reservation });
+              setContextMenu(null);
+            }}
+          >
+            ✏️ 編集
+          </button>
+          <button
+            className={`${styles.contextMenuItem} ${styles.contextMenuItemDelete}`}
+            onClick={async () => {
+              setContextMenu(null);
+              await handleModalDelete(contextMenu.reservation.id);
+            }}
+          >
+            🗑️ 削除
+          </button>
+        </div>
+      )}
+    </div>
+  );
+}

frontend/src/components/TimelineView.module.css

@@ -0,0 +1,341 @@
+.container {
+  display: flex;
+  flex-direction: column;
+  height: calc(100vh - 56px);
+  overflow: hidden;
+}
+
+.toolbar {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 10px 20px;
+  background: white;
+  border-bottom: 1px solid #e5e7eb;
+  flex-shrink: 0;
+  flex-wrap: wrap;
+}
+
+.navGroup {
+  display: flex;
+  gap: 4px;
+}
+
+.toolBtn {
+  background: #f3f4f6;
+  border: 1.5px solid #d1d5db;
+  color: #374151;
+  padding: 6px 14px;
+  border-radius: 6px;
+  font-size: 13px;
+  font-weight: 500;
+  transition: background 0.15s;
+  cursor: pointer;
+}
+
+.toolBtn:hover {
+  background: #e5e7eb;
+}
+
+.monthLabel {
+  font-size: 15px;
+  font-weight: 700;
+  color: #111827;
+  flex: 1;
+  text-align: center;
+}
+
+.addBtn {
+  background: #1a56db;
+  color: white;
+  border: none;
+  padding: 7px 18px;
+  border-radius: 6px;
+  font-size: 13px;
+  font-weight: 600;
+  transition: background 0.15s;
+  white-space: nowrap;
+  cursor: pointer;
+}
+
+.addBtn:hover {
+  background: #1447c0;
+}
+
+.addBtn:disabled {
+  background: #9ca3af;
+  cursor: not-allowed;
+}
+
+.error {
+  background: #fee2e2;
+  color: #dc2626;
+  padding: 10px 20px;
+  font-size: 14px;
+}
+
+.loading {
+  padding: 20px;
+  text-align: center;
+  color: #6b7280;
+  font-size: 14px;
+}
+
+.loadingOverlay {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  z-index: 40;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #4b5563;
+  font-size: 14px;
+  font-weight: 600;
+  background: rgba(255, 255, 255, 0.92);
+  border-bottom: 2px solid #d1d5db;
+  pointer-events: none;
+}
+
+/* Grid */
+.gridWrapper {
+  flex: 1;
+  overflow: auto;
+  position: relative;
+  user-select: none;
+}
+
+.grid {
+  position: relative;
+  min-height: 100%;
+}
+
+/* Header row */
+.headerRow {
+  display: flex;
+  position: sticky;
+  top: 0;
+  z-index: 20;
+  background: white;
+  border-bottom: 2px solid #d1d5db;
+}
+
+.cornerCell {
+  flex-shrink: 0;
+  background: #f9fafb;
+  border-right: 2px solid #d1d5db;
+  position: sticky;
+  left: 0;
+  z-index: 30;
+  display: flex;
+  align-items: center;
+  padding: 0 16px;
+}
+
+.cornerText {
+  font-size: 12px;
+  font-weight: 600;
+  color: #6b7280;
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+}
+
+.dayHeader {
+  flex-shrink: 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  border-right: 1px solid #e5e7eb;
+  gap: 2px;
+  background: white;
+}
+
+.todayHeader {
+  background: #eff6ff;
+}
+
+.weekendHeader {
+  background: #fafafa;
+}
+
+.dayNum {
+  font-size: 13px;
+  font-weight: 700;
+  color: #111827;
+  line-height: 1;
+}
+
+.dayDow {
+  font-size: 10px;
+  color: #9ca3af;
+  line-height: 1;
+}
+
+.sunDow {
+  color: #ef4444;
+}
+
+.satDow {
+  color: #3b82f6;
+}
+
+/* Reservation rows */
+.resRow {
+  display: flex;
+  border-bottom: 1px solid #e5e7eb;
+}
+
+.resRow:hover .cellArea {
+  background: #fafafa;
+}
+
+.resLabel {
+  flex-shrink: 0;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 0 12px;
+  border-right: 2px solid #d1d5db;
+  background: white;
+  position: sticky;
+  left: 0;
+  z-index: 10;
+  box-shadow: 2px 0 4px rgba(0,0,0,0.04);
+}
+
+.carDot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.labelText {
+  display: flex;
+  flex-direction: column;
+  min-width: 0;
+}
+
+.labelCar {
+  font-size: 11px;
+  color: #6b7280;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.labelCustomer {
+  font-size: 13px;
+  font-weight: 600;
+  color: #111827;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+/* Cell area */
+.cellArea {
+  display: flex;
+  position: relative;
+  flex-shrink: 0;
+}
+
+.cell {
+  flex-shrink: 0;
+  border-right: 1px solid #f0f0f0;
+}
+
+.todayCell {
+  background: rgba(59, 130, 246, 0.06);
+}
+
+.weekendCell {
+  background: rgba(0,0,0,0.015);
+}
+
+/* Bar */
+.bar {
+  position: absolute;
+  top: 6px;
+  height: calc(100% - 12px);
+  border-radius: 6px;
+  border: 1.5px solid;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  padding: 2px 8px;
+  cursor: pointer;
+  z-index: 5;
+  overflow: hidden;
+  transition: box-shadow 0.1s;
+}
+
+.bar:hover {
+  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
+  z-index: 6;
+}
+
+.barText {
+  font-size: 12px;
+  font-weight: 600;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  line-height: 1.3;
+}
+
+.barDates {
+  font-size: 10px;
+  opacity: 0.75;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  line-height: 1.2;
+}
+
+.empty {
+  padding: 40px 20px;
+  text-align: center;
+  color: #6b7280;
+  font-size: 14px;
+}
+
+/* Right-click context menu */
+.contextMenu {
+  position: fixed;
+  background: white;
+  border: 1px solid #d1d5db;
+  border-radius: 8px;
+  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
+  z-index: 1000;
+  min-width: 140px;
+  overflow: hidden;
+  padding: 4px 0;
+}
+
+.contextMenuItem {
+  display: block;
+  width: 100%;
+  text-align: left;
+  background: none;
+  border: none;
+  padding: 9px 16px;
+  font-size: 13px;
+  color: #374151;
+  cursor: pointer;
+  transition: background 0.1s;
+}
+
+.contextMenuItem:hover {
+  background: #f3f4f6;
+}
+
+.contextMenuItemDelete {
+  color: #dc2626;
+}
+
+.contextMenuItemDelete:hover {
+  background: #fee2e2;
+}

frontend/src/hooks/useWebSocket.js

@@ -0,0 +1,103 @@
+import { useEffect, useRef, useState, useCallback } from 'react';
+
+const WS_BASE = (() => {
+  if (import.meta.env.VITE_WS_URL) return import.meta.env.VITE_WS_URL;
+  const loc = window.location;
+  const proto = loc.protocol === 'https:' ? 'wss:' : 'ws:';
+  // Use the same origin as the page; in development the Vite dev server
+  // proxies /api/ws to the backend, and in production nginx does the same
+  // via the existing location /api/ block (no extra nginx config needed).
+  return `${proto}//${loc.host}/api/ws`;
+})();
+
+const RECONNECT_DELAYS = [1000, 2000, 4000, 8000, 15000, 30000]; // ms
+
+/**
+ * Maintains a WebSocket connection with automatic reconnection.
+ *
+ * @param {(message: object) => void} onMessage - Called for each parsed JSON message.
+ * @returns {{ status: 'connecting'|'connected'|'disconnected'|'error' }}
+ */
+export default function useWebSocket(onMessage) {
+  const [status, setStatus] = useState('connecting');
+  const wsRef = useRef(null);
+  const retryCountRef = useRef(0);
+  const unmountedRef = useRef(false);
+  const retryTimerRef = useRef(null);
+  const onMessageRef = useRef(onMessage);
+
+  // Keep onMessage ref up-to-date without re-running the effect
+  useEffect(() => {
+    onMessageRef.current = onMessage;
+  }, [onMessage]);
+
+  const connect = useCallback(() => {
+    if (unmountedRef.current) return;
+
+    setStatus('connecting');
+    const ws = new WebSocket(WS_BASE);
+    wsRef.current = ws;
+
+    ws.onopen = () => {
+      if (unmountedRef.current) { ws.close(); return; }
+      retryCountRef.current = 0;
+      setStatus('connected');
+    };
+
+    ws.onmessage = (event) => {
+      try {
+        const msg = JSON.parse(event.data);
+        onMessageRef.current(msg);
+      } catch {
+        // ignore malformed messages
+      }
+    };
+
+    ws.onclose = () => {
+      if (unmountedRef.current) return;
+      const delay = RECONNECT_DELAYS[Math.min(retryCountRef.current, RECONNECT_DELAYS.length - 1)];
+      retryCountRef.current += 1;
+      // After exhausting all backoff levels, keep status as 'error'
+      if (retryCountRef.current > RECONNECT_DELAYS.length) {
+        setStatus('error');
+      } else {
+        setStatus('disconnected');
+      }
+      retryTimerRef.current = setTimeout(connect, delay);
+    };
+
+    ws.onerror = () => {
+      // onclose will fire right after, which handles reconnect
+    };
+  }, []);
+
+  useEffect(() => {
+    // Reset on each mount so that React StrictMode's simulated unmount/remount
+    // does not leave unmountedRef permanently true and block reconnection.
+    unmountedRef.current = false;
+    connect();
+    return () => {
+      unmountedRef.current = true;
+      clearTimeout(retryTimerRef.current);
+      const ws = wsRef.current;
+      if (ws) {
+        // Null out all handlers first to prevent any reconnect attempts.
+        ws.onopen = null;
+        ws.onclose = null;
+        ws.onerror = null;
+        ws.onmessage = null;
+        if (ws.readyState === WebSocket.CONNECTING) {
+          // Closing a CONNECTING socket triggers the browser warning
+          // "WebSocket is closed before the connection is established".
+          // Instead, schedule a close as soon as it opens so the server
+          // isn't left with a permanently idle connection.
+          ws.onopen = () => ws.close();
+        } else if (ws.readyState === WebSocket.OPEN) {
+          ws.close();
+        }
+      }
+    };
+  }, [connect]);
+
+  return { status };
+}

frontend/src/index.css

@@ -0,0 +1,27 @@
+/* Global styles */
+* {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
+  background: #f5f7fa;
+  color: #333;
+  min-height: 100vh;
+}
+
+#root {
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+}
+
+button {
+  cursor: pointer;
+}
+
+input, textarea, select {
+  font-family: inherit;
+}

frontend/src/main.jsx

@@ -0,0 +1,10 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import App from './App.jsx';
+import './index.css';
+
+ReactDOM.createRoot(document.getElementById('root')).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);

frontend/src/utils/carUtils.js

@@ -0,0 +1,38 @@
+/**
+ * Returns true if the given inspection expiry date string is within 1 month
+ * from today (or already past).
+ * @param {string} inspectionExpiry - ISO date string (YYYY-MM-DD) or empty
+ * @returns {boolean}
+ */
+export function isInspectionExpirySoon(inspectionExpiry) {
+  if (!inspectionExpiry) return false;
+  const expiry = new Date(inspectionExpiry);
+  const oneMonthLater = new Date();
+  oneMonthLater.setMonth(oneMonthLater.getMonth() + 1);
+  return expiry <= oneMonthLater;
+}
+
+/**
+ * Formats a date range with optional AM/PM periods into a display string.
+ * @param {string} startDate - ISO date string (YYYY-MM-DD)
+ * @param {string} startPeriod - '午前', '午後', or ''
+ * @param {string} endDate - ISO date string (YYYY-MM-DD)
+ * @param {string} endPeriod - '午前', '午後', or ''
+ * @returns {string}
+ */
+export function formatDateRange(startDate, startPeriod, endDate, endPeriod) {
+  const start = startDate.slice(5) + (startPeriod ? ' ' + startPeriod : '');
+  const end = endDate.slice(5) + (endPeriod ? ' ' + endPeriod : '');
+  return `${start} 〜 ${end}`;
+}
+
+/**
+ * Formats a reservation tooltip string with full dates and optional periods.
+ * @param {object} r - reservation object
+ * @returns {string}
+ */
+export function formatReservationTooltip(r) {
+  const start = r.start_date + (r.start_period ? ' ' + r.start_period : '');
+  const end = r.end_date + (r.end_period ? ' ' + r.end_period : '');
+  return `${r.customer_name || '予約'}\n${start} 〜 ${end}${r.notes ? '\n' + r.notes : ''}`;
+}

frontend/vite.config.js

@@ -0,0 +1,60 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import net from 'net';
+
+const backendOrigin = process.env.BACKEND_URL || 'http://localhost:3001';
+
+/**
+ * Custom Vite plugin that tunnels WebSocket upgrade requests at /api/ws to the
+ * backend via raw TCP.  Vite's built-in proxy `ws: true` can silently drop
+ * upgrade events that Vite's own HMR handler intercepts first.  This plugin
+ * hooks directly onto `httpServer.upgrade` and handles the /api/ws path before
+ * Vite gets a chance to claim it.
+ */
+function wsProxyPlugin() {
+  return {
+    name: 'ws-proxy',
+    configureServer(server) {
+      server.httpServer?.on('upgrade', (req, socket, head) => {
+        if (req.url !== '/api/ws') return;
+
+        const { hostname, port: rawPort } = new URL(backendOrigin);
+        const port = parseInt(rawPort) || 3001;
+
+        const conn = net.createConnection({ host: hostname, port });
+
+        conn.on('error', () => socket.destroy());
+        socket.on('error', () => conn.destroy());
+
+        conn.on('connect', () => {
+          // Replay the original HTTP upgrade request to the backend
+          const headers =
+            `${req.method} ${req.url} HTTP/${req.httpVersion}\r\n` +
+            Object.entries(req.headers)
+              .map(([k, v]) => `${k}: ${v}`)
+              .join('\r\n') +
+            '\r\n\r\n';
+          conn.write(headers);
+          if (head && head.length) conn.write(head);
+
+          // Bidirectional pipe
+          conn.pipe(socket).pipe(conn);
+        });
+      });
+    },
+  };
+}
+
+export default defineConfig({
+  plugins: [react(), wsProxyPlugin()],
+  server: {
+    port: 5173,
+    allowedHosts: ["car.33-4.party"],
+    proxy: {
+      '/api': {
+        target: backendOrigin,
+        changeOrigin: true,
+      },
+    },
+  },
+});

package-lock.json

@@ -0,0 +1,329 @@
+{
+  "name": "car-reservation",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "car-reservation",
+      "version": "1.0.0",
+      "devDependencies": {
+        "concurrently": "^9.2.1"
+      }
+    },
+    "node_modules/ansi-regex": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/ansi-styles": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+      "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "color-convert": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/chalk": {
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+}

package.json

@@ -0,0 +1,17 @@
+{
+  "name": "car-reservation",
+  "version": "1.0.0",
+  "description": "代車スケジュール管理システム",
+  "private": true,
+  "scripts": {
+    "dev:backend": "cd backend && node server.js --port 3007",
+    "dev:frontend": "cd frontend && npx vite --port 3006",
+    "dev": "concurrently \"npm run dev:backend\" \"npm run dev:frontend\"",
+    "build": "cd frontend && npx vite build"
+  },
+  "keywords": [],
+  "author": "",
+  "devDependencies": {
+    "concurrently": "^9.2.1"
+  }
+}