Feat: 탭 기능 추가 - 날짜/용도별 독립 작업 공간

- 탭바: 자유로운 이름 지정, 추가/삭제/더블클릭 이름변경
- 각 탭은 독립적인 근무자/근무지/배치 데이터 보유
- 탭 전환 시 해당 데이터로 지도/사이드바 갱신
- 내보내기 시 현재 탭 이름이 파일명에 포함됨
- API 경로 /api/* 로 통일

templates/index.html

@@ -19,12 +19,17 @@
       <label for="fileInput" class="btn btn-primary"><i class="fas fa-upload"></i> 엑셀 업로드</label>
       <input type="file" id="fileInput" accept=".xlsx,.xls" hidden />
     </form>
-    <button class="btn btn-success" id="exportBtn" onclick="exportExcel()"><i class="fas fa-download"></i> 내보내기</button>
-    <button class="btn btn-danger" id="resetBtn" onclick="resetAssignments()"><i class="fas fa-undo"></i> 초기화</button>
+    <button class="btn btn-success" onclick="exportExcel()"><i class="fas fa-download"></i> 내보내기</button>
+    <button class="btn btn-danger" onclick="resetAssignments()"><i class="fas fa-undo"></i> 초기화</button>
     <span id="statusBadge" class="status-badge"></span>
   </div>
 </div>
 
+<div id="tabBar">
+  <div id="tabList" class="tab-list"></div>
+  <button class="tab-add" onclick="addTab()" title="새 탭 추가"><i class="fas fa-plus"></i></button>
+</div>
+
 <div id="main">
   <div id="sidebar">
     <div class="sidebar-header">
@@ -33,7 +38,6 @@
     </div>
     <div id="workerList" class="worker-list"></div>
   </div>
-
   <div id="mapContainer">
     <div id="map"></div>
     <div id="dropOverlay">여기에 드롭하여 배치</div>
@@ -45,34 +49,151 @@
 <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
 <script>
 const YONGSAN = [37.5326, 126.9906];
-
-let map, store;
-
+let map;
 const WORKER_ICON = L.divIcon({
   className: 'marker-icon worker-marker',
   html: '<i class="fas fa-user"></i>',
-  iconSize: [36, 36],
-  iconAnchor: [18, 36],
-  popupAnchor: [0, -40],
+  iconSize: [36, 36], iconAnchor: [18, 36], popupAnchor: [0, -40],
 });
-
 const WORKER_ASSIGNED_ICON = L.divIcon({
   className: 'marker-icon worker-assigned-marker',
   html: '<i class="fas fa-user-check"></i>',
-  iconSize: [36, 36],
-  iconAnchor: [18, 36],
-  popupAnchor: [0, -40],
+  iconSize: [36, 36], iconAnchor: [18, 36], popupAnchor: [0, -40],
 });
-
 const WORKPLACE_ICON = L.divIcon({
   className: 'marker-icon workplace-marker',
   html: '<i class="fas fa-building"></i>',
-  iconSize: [42, 42],
-  iconAnchor: [21, 42],
-  popupAnchor: [0, -40],
+  iconSize: [42, 42], iconAnchor: [21, 42], popupAnchor: [0, -40],
 });
 
 let markers = { workers: {}, workplaces: {} };
+let tabs = [];
+let activeTabId = null;
+
+// caches the current tab's data loaded from server
+let tabDataCache = {};
+
+async function api(url, opts = {}) {
+  const resp = await fetch(url, opts);
+  if (!resp.ok) throw new Error(await resp.text());
+  return resp.json();
+}
+
+function tabQuery() { return activeTabId ? `?tab=${activeTabId}` : ''; }
+function tabBody() { return { tab: activeTabId }; }
+
+// ── Tab management ──
+
+async function loadTabs() {
+  const r = await api('/api/tabs');
+  tabs = r.tabs;
+  activeTabId = r.activeTab;
+  renderTabBar();
+  if (activeTabId) {
+    await loadTabData(activeTabId);
+  } else {
+    document.getElementById('workerList').innerHTML = '<div class="empty-state">새 탭을 추가하거나 엑셀 파일을 업로드하세요</div>';
+  }
+}
+
+async function loadTabData(tid) {
+  const r = await api(`/api/data?tab=${tid}`);
+  tabDataCache[tid] = r;
+  if (tid === activeTabId) render();
+}
+
+function currentData() {
+  return tabDataCache[activeTabId] || { workers: [], workplaces: [], assignments: {} };
+}
+
+async function addTab() {
+  const name = prompt('탭 이름을 입력하세요 (예: 5/12, 1차 등)');
+  if (name === null) return;
+  const r = await api('/api/tabs/add', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ name: name.trim() || undefined }),
+  });
+  tabDataCache[r.id] = { workers: [], workplaces: [], assignments: {} };
+  activeTabId = r.id;
+  await loadTabs();
+}
+
+async function renameTab(e, tid) {
+  e.stopPropagation();
+  const tab = tabs.find(t => t.id === tid);
+  if (!tab) return;
+  const name = prompt('새 이름을 입력하세요', tab.name);
+  if (!name || name.trim() === tab.name) return;
+  await api('/api/tabs/rename', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ id: tid, name: name.trim() }),
+  });
+  await loadTabs();
+}
+
+async function deleteTab(e, tid) {
+  e.stopPropagation();
+  if (tabs.length <= 1) { showToast('최소 1개의 탭이 필요합니다.', 'warning'); return; }
+  if (!confirm('이 탭을 삭제하시겠습니까? 데이터가 모두 사라집니다.')) return;
+  await api('/api/tabs/delete', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ id: tid }),
+  });
+  delete tabDataCache[tid];
+  await loadTabs();
+}
+
+async function switchTab(tid) {
+  if (tid === activeTabId) return;
+  activeTabId = tid;
+  await api('/api/tabs/activate', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ id: tid }),
+  });
+  if (!tabDataCache[tid]) await loadTabData(tid);
+  else render();
+  renderTabBar();
+  document.getElementById('statusBadge').className = 'status-badge';
+}
+
+function renderTabBar() {
+  const list = document.getElementById('tabList');
+  list.innerHTML = '';
+  for (const tab of tabs) {
+    const el = document.createElement('div');
+    el.className = `tab-item ${tab.id === activeTabId ? 'active' : ''}`;
+
+    const nameSpan = document.createElement('span');
+    nameSpan.className = 'tab-name';
+    nameSpan.textContent = tab.name;
+    nameSpan.title = '더블클릭하여 이름 변경';
+
+    const badge = document.createElement('span');
+    badge.className = 'tab-badge';
+    badge.textContent = `${tab.assignCount}/${tab.workerCount}`;
+
+    const del = document.createElement('span');
+    del.className = 'tab-del';
+    del.innerHTML = '&times;';
+    del.title = '탭 삭제';
+
+    el.appendChild(nameSpan);
+    el.appendChild(badge);
+    el.appendChild(del);
+
+    el.addEventListener('click', () => switchTab(tab.id));
+    nameSpan.addEventListener('dblclick', (e) => renameTab(e, tab.id));
+    del.addEventListener('click', (e) => deleteTab(e, tab.id));
+
+    list.appendChild(el);
+  }
+}
+
+// ── Map ──
 
 function init() {
   map = L.map('map').setView(YONGSAN, 14);
@@ -81,67 +202,48 @@ function init() {
     attribution: '&copy; OpenStreetMap contributors',
   }).addTo(map);
 
-  const mapContainer = document.getElementById('mapContainer');
-
-  mapContainer.addEventListener('dragover', (e) => {
-    e.preventDefault();
-    e.dataTransfer.dropEffect = 'move';
-    document.getElementById('dropOverlay').classList.add('active');
-  });
-
-  mapContainer.addEventListener('dragleave', (e) => {
-    document.getElementById('dropOverlay').classList.remove('active');
-  });
-
-  mapContainer.addEventListener('drop', (e) => {
+  const mc = document.getElementById('mapContainer');
+  mc.addEventListener('dragover', e => { e.preventDefault(); e.dataTransfer.dropEffect = 'move'; document.getElementById('dropOverlay').classList.add('active'); });
+  mc.addEventListener('dragleave', () => document.getElementById('dropOverlay').classList.remove('active'));
+  mc.addEventListener('drop', e => {
     e.preventDefault();
     document.getElementById('dropOverlay').classList.remove('active');
     const workerId = e.dataTransfer.getData('text/plain');
-    if (!workerId || !store) return;
-
+    if (!workerId || !activeTabId) return;
     const rect = map.getContainer().getBoundingClientRect();
-    const x = e.clientX - rect.left;
-    const y = e.clientY - rect.top;
-    const latlng = map.containerPointToLatLng([x, y]);
-
+    const latlng = map.containerPointToLatLng([e.clientX - rect.left, e.clientY - rect.top]);
     const nearest = findNearestWorkplace(latlng.lat, latlng.lng);
-    if (!nearest) {
-      showToast('근무지 마커 근처에 드롭해주세요.', 'warning');
-      return;
-    }
+    if (!nearest) { showToast('근무지 마커 근처에 드롭해주세요.', 'warning'); return; }
     doAssignWorker(workerId, nearest.id);
   });
 
   document.getElementById('fileInput').addEventListener('change', uploadExcel);
+  loadTabs();
 }
 
 function findNearestWorkplace(lat, lng) {
+  const d = currentData();
   const threshold = 0.002;
   let best = null, bestDist = Infinity;
-  for (const wp of (store?.workplaces || [])) {
-    const d = Math.abs(wp.lat - lat) + Math.abs(wp.lng - lng);
-    if (d < threshold && d < bestDist) {
-      bestDist = d;
-      best = wp;
-    }
+  for (const wp of (d.workplaces || [])) {
+    const dist = Math.abs(wp.lat - lat) + Math.abs(wp.lng - lng);
+    if (dist < threshold && dist < bestDist) { bestDist = dist; best = wp; }
   }
   return best;
 }
 
 async function uploadExcel(e) {
   const file = e.target.files[0];
-  if (!file) return;
-
+  if (!file || !activeTabId) return;
   const form = new FormData();
   form.append('file', file);
-
+  form.append('tab', activeTabId);
   showToast('업로드 중...', 'info');
-
   try {
-    const resp = await fetch('/upload', { method: 'POST', body: form });
-    if (!resp.ok) throw new Error('업로드 실패');
-    store = await resp.json();
+    const r = await api('/api/upload', { method: 'POST', body: form });
+    tabDataCache[activeTabId] = r;
     render();
+    await loadTabs();
     showToast(`파일 로드 완료: ${file.name}`, 'success');
   } catch (err) {
     showToast('업로드 실패: ' + err.message, 'error');
@@ -149,8 +251,10 @@ async function uploadExcel(e) {
   e.target.value = '';
 }
 
+// ── Rendering ──
+
 function render() {
-  if (!store) return;
+  if (!activeTabId) return;
   clearMap();
   renderWorkplaceMarkers();
   renderWorkerMarkers();
@@ -159,88 +263,69 @@ function render() {
 }
 
 function clearMap() {
-  for (const key in markers.workers) {
-    map.removeLayer(markers.workers[key]);
-  }
-  for (const key in markers.workplaces) {
-    map.removeLayer(markers.workplaces[key]);
-  }
+  for (const k in markers.workers) map.removeLayer(markers.workers[k]);
+  for (const k in markers.workplaces) map.removeLayer(markers.workplaces[k]);
   markers = { workers: {}, workplaces: {} };
 }
 
 function getWorkplaceAssigneesHtml(wpId) {
-  const assigned = store.workers.filter(w => store.assignments[w.id] === wpId);
+  const d = currentData();
+  const assigned = d.workers.filter(w => d.assignments[w.id] === wpId);
   if (assigned.length === 0) return '<div class="wp-assignees" style="color:#9ca3af;">배정된 근무자 없음</div>';
-  return '<div class="wp-assignees"><strong>배정된 근무자</strong><ul style="margin:4px 0 0 0;padding-left:16px;">' +
+  return '<div class="wp-assignees"><strong>배정된 근무자</strong><ul style="margin:4px 0 0 16px;">' +
     assigned.map(w => `<li>${escHtml(w.name)}</li>`).join('') + '</ul></div>';
 }
 
 function renderWorkplaceMarkers() {
+  const d = currentData();
   const bounds = [];
-  for (const wp of store.workplaces) {
+  for (const wp of d.workplaces) {
     const marker = L.marker([wp.lat, wp.lng], { icon: WORKPLACE_ICON })
-      .addTo(map)
-      .bindPopup(`
+      .addTo(map).bindPopup(`
         <div class="popup-content">
           <strong><i class="fas fa-building"></i> ${escHtml(wp.name)}</strong><br>
           <small>${escHtml(wp.address)}</small>
           ${getWorkplaceAssigneesHtml(wp.id)}
-        </div>
-      `);
+        </div>`);
     markers.workplaces[wp.id] = marker;
     bounds.push([wp.lat, wp.lng]);
   }
-  if (bounds.length > 0) {
-    map.fitBounds(bounds, { padding: [50, 50], maxZoom: 16 });
-  }
+  if (bounds.length > 0) map.fitBounds(bounds, { padding: [50, 50], maxZoom: 16 });
 }
 
 function getWorkerPos(w) {
-  const wpId = store.assignments[w.id];
+  const d = currentData();
+  const wpId = d.assignments[w.id];
   if (wpId) {
-    const wp = store.workplaces.find(p => p.id === wpId);
+    const wp = d.workplaces.find(p => p.id === wpId);
     if (wp) return [wp.lat, wp.lng];
   }
   return [w.lat, w.lng];
 }
 
 function renderWorkerMarkers() {
-  for (const w of store.workers) {
-    const isAssigned = store.assignments[w.id];
-    const icon = isAssigned ? WORKER_ASSIGNED_ICON : WORKER_ICON;
-    const marker = L.marker(getWorkerPos(w), { icon, draggable: true })
-      .addTo(map)
-      .bindPopup(`
-        <div class="popup-content">
-          <strong><i class="fas fa-user"></i> ${escHtml(w.name)}</strong><br>
-          <small>${escHtml(w.address)}</small><br>
-          <small>${escHtml(w.phone)}</small>
-          <div class="worker-status" id="worker-status-${w.id}">
-            ${isAssigned ? `<span class="tag-assigned">배치됨 → ${escHtml(getWorkplaceName(isAssigned))}</span>` : '<span class="tag-unassigned">미배치</span>'}
-          </div>
-          ${isAssigned ? `<button class="btn-small btn-danger" onclick="unassignWorker('${w.id}', true)">배치 취소</button>` : ''}
-        </div>
-      `);
-    marker.on('dragend', function () {
-      handleWorkerDragEnd(w.id, this);
-    });
+  const d = currentData();
+  for (const w of d.workers) {
+    const isAssigned = d.assignments[w.id];
+    const marker = L.marker(getWorkerPos(w), { icon: isAssigned ? WORKER_ASSIGNED_ICON : WORKER_ICON, draggable: true })
+      .addTo(map).bindPopup(buildWorkerPopup(w.id));
+    marker.on('dragend', function () { handleWorkerDragEnd(w.id, this); });
     markers.workers[w.id] = marker;
   }
 }
 
 function handleWorkerDragEnd(workerId, marker) {
+  const d = currentData();
   const pos = marker.getLatLng();
   const nearest = findNearestWorkplace(pos.lat, pos.lng);
 
   if (nearest) {
-    fetch('/assign', {
+    api('/api/assign', {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ workerId, workplaceId: nearest.id }),
-    })
-    .then(r => r.json())
-    .then(data => {
-      store.assignments = data.assignments;
+      body: JSON.stringify({ workerId, workplaceId: nearest.id, tab: activeTabId }),
+    }).then(data => {
+      tabDataCache[activeTabId].assignments = data.assignments;
       marker.setLatLng([nearest.lat, nearest.lng]);
       marker.setIcon(WORKER_ASSIGNED_ICON);
       marker.setPopupContent(buildWorkerPopup(workerId));
@@ -248,19 +333,17 @@ function handleWorkerDragEnd(workerId, marker) {
       renderWorkerList();
       updateBadges();
       showToast(`${getWorkerName(workerId)} → ${nearest.name} 배치됨`, 'success');
-    })
-    .catch(() => showToast('배치 저장 실패', 'error'));
-  } else if (store.assignments[workerId]) {
-    const oldWpId = store.assignments[workerId];
-    fetch('/unassign', {
+    }).catch(() => showToast('배치 저장 실패', 'error'));
+
+  } else if (d.assignments[workerId]) {
+    const oldWpId = d.assignments[workerId];
+    api('/api/unassign', {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ workerId }),
-    })
-    .then(r => r.json())
-    .then(data => {
-      store.assignments = data.assignments;
-      const w = store.workers.find(x => x.id === workerId);
+      body: JSON.stringify({ workerId, tab: activeTabId }),
+    }).then(data => {
+      tabDataCache[activeTabId].assignments = data.assignments;
+      const w = d.workers.find(x => x.id === workerId);
       marker.setLatLng([w.lat, w.lng]);
       marker.setIcon(WORKER_ICON);
       marker.setPopupContent(buildWorkerPopup(workerId));
@@ -268,18 +351,19 @@ function handleWorkerDragEnd(workerId, marker) {
       renderWorkerList();
       updateBadges();
       showToast('배치가 취소되었습니다.', 'info');
-    })
-    .catch(() => showToast('배치 취소 실패', 'error'));
+    }).catch(() => showToast('배치 취소 실패', 'error'));
+
   } else {
-    const w = store.workers.find(x => x.id === workerId);
+    const w = d.workers.find(x => x.id === workerId);
     marker.setLatLng([w.lat, w.lng]);
   }
 }
 
 function buildWorkerPopup(workerId) {
-  const w = store.workers.find(x => x.id === workerId);
+  const d = currentData();
+  const w = d.workers.find(x => x.id === workerId);
   if (!w) return '';
-  const isAssigned = store.assignments[w.id];
+  const isAssigned = d.assignments[w.id];
   const wpName = isAssigned ? getWorkplaceName(isAssigned) : '';
   return `
     <div class="popup-content">
@@ -294,20 +378,20 @@ function buildWorkerPopup(workerId) {
 }
 
 function getWorkerName(id) {
-  const w = store.workers.find(x => x.id === id);
+  const w = currentData().workers.find(x => x.id === id);
   return w ? w.name : '';
 }
 
 function renderWorkerList() {
+  const d = currentData();
   const list = document.getElementById('workerList');
   list.innerHTML = '';
-  for (const w of store.workers) {
-    const isAssigned = store.assignments[w.id];
+  for (const w of d.workers) {
+    const isAssigned = d.assignments[w.id];
     const card = document.createElement('div');
     card.className = `worker-card ${isAssigned ? 'assigned' : ''}`;
     card.draggable = true;
     card.dataset.workerId = w.id;
-
     card.innerHTML = `
       <div class="worker-card-avatar ${isAssigned ? 'assigned' : ''}">
         <i class="fas ${isAssigned ? 'fa-user-check' : 'fa-user'}"></i>
@@ -320,59 +404,53 @@ function renderWorkerList() {
         <div class="worker-card-assignment">
           ${isAssigned ? `<span class="tag-assigned"><i class="fas fa-check-circle"></i> ${escHtml(getWorkplaceName(isAssigned))}</span>` : '<span class="tag-unassigned">미배치</span>'}
         </div>
-      </div>
-    `;
-
-    card.addEventListener('dragstart', (e) => {
-      e.dataTransfer.setData('text/plain', w.id);
-      e.dataTransfer.effectAllowed = 'move';
-      card.classList.add('dragging');
-    });
-
-    card.addEventListener('dragend', (e) => {
-      card.classList.remove('dragging');
-    });
-
+      </div>`;
+    card.addEventListener('dragstart', e => { e.dataTransfer.setData('text/plain', w.id); e.dataTransfer.effectAllowed = 'move'; card.classList.add('dragging'); });
+    card.addEventListener('dragend', () => card.classList.remove('dragging'));
     list.appendChild(card);
   }
+  if (d.workers.length === 0) {
+    list.innerHTML = '<div class="empty-state">엑셀 파일을 업로드하세요</div>';
+  }
 }
 
 function updateWorkplacePopup(wpId) {
+  const d = currentData();
   const marker = markers.workplaces[wpId];
-  if (!marker) return;
-  const wp = store.workplaces.find(p => p.id === wpId);
-  if (!wp) return;
+  const wp = d.workplaces.find(p => p.id === wpId);
+  if (!marker || !wp) return;
   marker.setPopupContent(`
     <div class="popup-content">
       <strong><i class="fas fa-building"></i> ${escHtml(wp.name)}</strong><br>
       <small>${escHtml(wp.address)}</small>
       ${getWorkplaceAssigneesHtml(wpId)}
-    </div>
-  `);
+    </div>`);
 }
 
 function updateBadges() {
-  const assigned = Object.keys(store.assignments).length;
-  const total = store.workers.length;
+  const d = currentData();
+  const assigned = Object.keys(d.assignments).length;
+  const total = d.workers.length;
   document.getElementById('workerCount').textContent = `${assigned}/${total}`;
-  document.getElementById('statusBadge').textContent = assigned > 0 ? `배치 ${assigned}/${total}` : '';
-  document.getElementById('statusBadge').className = `status-badge ${assigned === total ? 'complete' : assigned > 0 ? 'partial' : ''}`;
+  const badge = document.getElementById('statusBadge');
+  badge.textContent = assigned > 0 ? `배치 ${assigned}/${total}` : '';
+  badge.className = `status-badge ${!total ? '' : assigned === total ? 'complete' : assigned > 0 ? 'partial' : ''}`;
 }
 
-function doAssignWorker(workerId, workplaceId) {
-  if (!store) return;
-  if (store.assignments[workerId] === workplaceId) return;
+// ── Actions ──
 
-  fetch('/assign', {
-    method: 'POST',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ workerId, workplaceId }),
-  })
-  .then(r => r.json())
-  .then(data => {
-    store.assignments = data.assignments;
-    const w = store.workers.find(x => x.id === workerId);
-    const wp = store.workplaces.find(p => p.id === workplaceId);
+async function doAssignWorker(workerId, workplaceId) {
+  if (!activeTabId) return;
+  const d = currentData();
+  if (d.assignments[workerId] === workplaceId) return;
+  try {
+    const r = await api('/api/assign', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ workerId, workplaceId, tab: activeTabId }),
+    });
+    tabDataCache[activeTabId].assignments = r.assignments;
+    const wp = d.workplaces.find(p => p.id === workplaceId);
     const marker = markers.workers[workerId];
     if (marker) {
       marker.setLatLng([wp.lat, wp.lng]);
@@ -383,23 +461,21 @@ function doAssignWorker(workerId, workplaceId) {
     renderWorkerList();
     updateBadges();
     showToast('배치가 저장되었습니다.', 'success');
-  })
-  .catch(() => showToast('배치 저장 실패', 'error'));
+  } catch { showToast('배치 저장 실패', 'error'); }
 }
 
-function unassignWorker(workerId, fromPopup) {
-  if (!store) return;
-
-  fetch('/unassign', {
-    method: 'POST',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ workerId }),
-  })
-  .then(r => r.json())
-  .then(data => {
-    const oldWpId = store.assignments[workerId];
-    store.assignments = data.assignments;
-    const w = store.workers.find(x => x.id === workerId);
+async function unassignWorker(workerId, fromPopup) {
+  if (!activeTabId) return;
+  const d = currentData();
+  const oldWpId = d.assignments[workerId];
+  try {
+    const r = await api('/api/unassign', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ workerId, tab: activeTabId }),
+    });
+    tabDataCache[activeTabId].assignments = r.assignments;
+    const w = d.workers.find(x => x.id === workerId);
     const marker = markers.workers[workerId];
     if (marker) {
       marker.setLatLng([w.lat, w.lng]);
@@ -411,46 +487,44 @@ function unassignWorker(workerId, fromPopup) {
     updateBadges();
     if (fromPopup) map.closePopup();
     showToast('배치가 취소되었습니다.', 'info');
-  })
-  .catch(() => showToast('배치 취소 실패', 'error'));
+  } catch { showToast('배치 취소 실패', 'error'); }
 }
 
-function resetAssignments() {
-  if (!store || Object.keys(store.assignments).length === 0) return;
+async function resetAssignments() {
+  const d = currentData();
+  if (!activeTabId || Object.keys(d.assignments).length === 0) return;
   if (!confirm('모든 배치를 초기화하시겠습니까?')) return;
-
-  fetch('/reset', { method: 'POST' })
-    .then(r => r.json())
-    .then(data => {
-      store.assignments = data.assignments;
-      for (const w of store.workers) {
-        const marker = markers.workers[w.id];
-        if (marker) {
-          marker.setLatLng([w.lat, w.lng]);
-          marker.setIcon(WORKER_ICON);
-          marker.setPopupContent(buildWorkerPopup(w.id));
-        }
+  try {
+    await api('/api/reset', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ tab: activeTabId }),
+    });
+    tabDataCache[activeTabId].assignments = {};
+    for (const w of d.workers) {
+      const marker = markers.workers[w.id];
+      if (marker) {
+        marker.setLatLng([w.lat, w.lng]);
+        marker.setIcon(WORKER_ICON);
+        marker.setPopupContent(buildWorkerPopup(w.id));
       }
-      for (const wp of store.workplaces) {
-        updateWorkplacePopup(wp.id);
-      }
-      renderWorkerList();
-      updateBadges();
-      showToast('모든 배치가 초기화되었습니다.', 'info');
-    })
-    .catch(() => showToast('초기화 실패', 'error'));
+    }
+    for (const wp of d.workplaces) updateWorkplacePopup(wp.id);
+    renderWorkerList();
+    updateBadges();
+    showToast('모든 배치가 초기화되었습니다.', 'info');
+  } catch { showToast('초기화 실패', 'error'); }
 }
 
 function exportExcel() {
-  if (!store || store.workers.length === 0) {
-    showToast('내보낼 데이터가 없습니다.', 'warning');
-    return;
-  }
-  window.location.href = '/export';
+  if (!activeTabId) { showToast('내보낼 탭이 없습니다.', 'warning'); return; }
+  const d = currentData();
+  if (d.workers.length === 0) { showToast('내보낼 데이터가 없습니다.', 'warning'); return; }
+  window.location.href = `/api/export?tab=${activeTabId}`;
 }
 
 function getWorkplaceName(id) {
-  const wp = store.workplaces.find(p => p.id === id);
+  const wp = currentData().workplaces.find(p => p.id === id);
   return wp ? wp.name : '(알 수 없음)';
 }