feat(admin): multi-select with shift+drag for common bulk operations

6 files changed, 651 insertions, 38 deletions

diff --git a/internal/admin/api_map.go b/internal/admin/api_map.go
index 3705cde..f5fd9ee 100644
--- a/internal/admin/api_map.go
+++ b/internal/admin/api_map.go
@@ -158,11 +158,14 @@ func (s *AdminServer) handleMap(w http.ResponseWriter, r *http.Request) {
 	}
 
 	type RoomEntry struct {
-		ID    int    `json:"id"`
-		X     int    `json:"x"`
-		Y     int    `json:"y"`
-		Name  string `json:"name"`
-		Color string `json:"color"`
+		ID             int    `json:"id"`
+		X              int    `json:"x"`
+		Y              int    `json:"y"`
+		Name           string `json:"name"`
+		Color          string `json:"color"`
+		Dir            string `json:"dir"`
+		BlockTransport bool   `json:"block_transport"`
+		Hazard         string `json:"hazard"`
 	}
 
 	type LinkEntry struct {
@@ -198,11 +201,14 @@ func (s *AdminServer) handleMap(w http.ResponseWriter, r *http.Request) {
 		roomData[rid] = r
 
 		rooms = append(rooms, RoomEntry{
-			ID:    rid,
-			X:     coord[0],
-			Y:     coord[1],
-			Name:  r.Name,
-			Color: r.Color,
+			ID:             rid,
+			X:              coord[0],
+			Y:              coord[1],
+			Name:           r.Name,
+			Color:          r.Color,
+			Dir:            getRoomDir(s, rid),
+			BlockTransport: r.BlockTransport,
+			Hazard:         r.Hazard,
 		})
 
 		if first {
diff --git a/internal/admin/api_rooms_bulk.go b/internal/admin/api_rooms_bulk.go
new file mode 100644
index 0000000..34ca209
--- /dev/null
+++ b/internal/admin/api_rooms_bulk.go
@@ -0,0 +1,214 @@
+package admin
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+)
+
+type bulkEditPatch struct {
+	Color          *string `json:"color"`
+	BlockTransport *bool   `json:"block_transport"`
+	Dir            *string `json:"dir"`
+	Hazard         *string `json:"hazard"`
+}
+
+type bulkEditRequest struct {
+	Patch bulkEditPatch `json:"patch"`
+	IDs   []int         `json:"ids"`
+}
+
+func (s *AdminServer) handleBulkEdit(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	body, readErr := io.ReadAll(r.Body)
+	r.Body.Close()
+	if readErr != nil {
+		writeJSON(w, map[string]any{"error": fmt.Sprintf("read body: %v", readErr)})
+		return
+	}
+
+	var req bulkEditRequest
+	if err := json.Unmarshal(body, &req); err != nil {
+		writeJSON(w, map[string]any{"error": fmt.Sprintf("invalid json: %v", err)})
+		return
+	}
+
+	if len(req.IDs) == 0 {
+		writeJSON(w, map[string]any{"error": "no room ids"})
+		return
+	}
+
+	if isEmptyPatch(req.Patch) {
+		writeJSON(w, map[string]any{"error": "no patch fields"})
+		return
+	}
+
+	patch := req.Patch
+
+	roomPaths := make([]string, 0, len(req.IDs))
+	for _, id := range req.IDs {
+		path, ok := s.world.GetRoomPath(id)
+		if !ok {
+			writeJSON(w, map[string]any{"error": fmt.Sprintf("room %d not found", id)})
+			return
+		}
+		roomPaths = append(roomPaths, path)
+	}
+
+	type roomWrite struct {
+		oldContent  []byte
+		newContent  []byte
+		oldPath     string
+		newPath     string
+		wasMoved    bool
+	}
+
+	writes := make([]roomWrite, 0, len(req.IDs))
+	dirMovePaths := make(map[string]struct{})
+
+	for i, id := range req.IDs {
+		path := roomPaths[i]
+
+		oldContent, snapErr := snapshotFile(path)
+		if snapErr != nil {
+			writeJSON(w, map[string]any{"error": fmt.Sprintf("snapshot room %d: %v", id, snapErr)})
+			return
+		}
+
+		data, readErr := os.ReadFile(path)
+		if readErr != nil {
+			writeJSON(w, map[string]any{"error": fmt.Sprintf("read room %d: %v", id, readErr)})
+			return
+		}
+
+		m, yamlErr := yamlToMap(data)
+		if yamlErr != nil {
+			writeJSON(w, map[string]any{"error": fmt.Sprintf("parse room %d: %v", id, yamlErr)})
+			return
+		}
+
+		if patch.Color != nil {
+			m["color"] = *patch.Color
+		}
+		if patch.BlockTransport != nil {
+			m["block_transport"] = *patch.BlockTransport
+		}
+		if patch.Hazard != nil {
+			if *patch.Hazard == "" {
+				delete(m, "hazard")
+			} else {
+				m["hazard"] = *patch.Hazard
+			}
+		}
+
+		if patch.Dir != nil && *patch.Dir != "" {
+			destDir := filepath.Join(s.dataDir, "rooms", *patch.Dir)
+			if _, err := os.Stat(destDir); os.IsNotExist(err) {
+				writeJSON(w, map[string]any{"error": fmt.Sprintf("directory does not exist: %s", *patch.Dir)})
+				return
+			}
+
+			fileName := strconv.Itoa(id) + ".yaml"
+			newPath := filepath.Join(destDir, fileName)
+			if newPath != path {
+				if _, err := os.Stat(newPath); err == nil {
+					writeJSON(w, map[string]any{"error": fmt.Sprintf("room %d already exists in target directory", id)})
+					return
+				}
+			}
+
+			newContent, writeErr := writeMapAsYAML(newPath, m)
+			if writeErr != nil {
+				writeJSON(w, map[string]any{"error": fmt.Sprintf("write room %d: %v", id, writeErr)})
+				return
+			}
+
+			writes = append(writes, roomWrite{
+				oldContent: oldContent,
+				newContent: newContent,
+				oldPath:    path,
+				newPath:    newPath,
+				wasMoved:   true,
+			})
+			dirMovePaths[path] = struct{}{}
+		} else {
+			newContent, writeErr := writeMapAsYAML(path, m)
+			if writeErr != nil {
+				writeJSON(w, map[string]any{"error": fmt.Sprintf("write room %d: %v", id, writeErr)})
+				return
+			}
+
+			writes = append(writes, roomWrite{
+				oldContent: oldContent,
+				newContent: newContent,
+				oldPath:    path,
+				newPath:    path,
+				wasMoved:   false,
+			})
+		}
+	}
+
+	for _, rw := range writes {
+		if rw.wasMoved {
+			if _, alreadyRemoved := dirMovePaths[rw.oldPath]; alreadyRemoved {
+				delete(dirMovePaths, rw.oldPath)
+				if err := os.Remove(rw.oldPath); err != nil {
+					writeJSON(w, map[string]any{"error": fmt.Sprintf("remove old room: %v", err)})
+					return
+				}
+			}
+		}
+	}
+
+	s.world.RebuildRoomIndex(s.dataDir)
+
+	var desc string
+	if patch.Dir != nil && *patch.Dir != "" {
+		desc = fmt.Sprintf("bulk edit %d rooms (move to %s)", len(req.IDs), *patch.Dir)
+	} else {
+		desc = fmt.Sprintf("bulk edit %d rooms", len(req.IDs))
+	}
+
+	var extraFiles []ExtraFile
+	var firstDesc ChangeDesc
+	for i, rw := range writes {
+		ef := ExtraFile{
+			FilePath:   rw.oldPath,
+			OldContent: rw.oldContent,
+			NewContent: rw.newContent,
+		}
+		if rw.wasMoved {
+			ef.NewFilePath = rw.newPath
+		}
+		if i == 0 {
+			firstDesc = ChangeDesc{
+				Description: desc,
+				FilePath:    rw.oldPath,
+				OldContent:  rw.oldContent,
+				NewContent:  rw.newContent,
+			}
+			if rw.wasMoved {
+				firstDesc.NewFilePath = rw.newPath
+			}
+		} else {
+			extraFiles = append(extraFiles, ef)
+		}
+	}
+
+	firstDesc.ExtraFiles = extraFiles
+	s.undoStack.Push(firstDesc)
+
+	writeJSON(w, map[string]any{"ok": true, "count": len(req.IDs)})
+}
+
+func isEmptyPatch(p bulkEditPatch) bool {
+	return p.Color == nil && p.BlockTransport == nil && p.Dir == nil && p.Hazard == nil
+}
diff --git a/internal/admin/server.go b/internal/admin/server.go
index f06b7cf..c33bd21 100644
--- a/internal/admin/server.go
+++ b/internal/admin/server.go
@@ -125,6 +125,7 @@ func NewServer(cfg *config.Config, useTLS bool, accountStore *player.AccountStor
 	apiMux.HandleFunc("/api/rooms/remove", s.handleRoomRemove)
 	apiMux.HandleFunc("/api/rooms/move", s.handleRoomMove)
 	apiMux.HandleFunc("/api/rooms/rename", s.handleRoomRename)
+	apiMux.HandleFunc("/api/rooms/bulk-edit", s.handleBulkEdit)
 	apiMux.HandleFunc("/api/rooms", s.handleRooms)
 	apiMux.HandleFunc("/api/rooms/new-empty", s.handleCreateEmptyRoom)
 	apiMux.HandleFunc("/api/rooms/", s.handleRoomByID)
diff --git a/internal/admin/static/admin.css b/internal/admin/static/admin.css
index aa80488..393fafd 100644
--- a/internal/admin/static/admin.css
+++ b/internal/admin/static/admin.css
@@ -55,6 +55,10 @@ body{font-family:monospace;background:var(--bg);color:var(--text);display:flex;f
 .link-mode-badge.oneway{background:rgba(80,50,20,0.92);color:#fca;border:1px solid #a64}
 #mapSvg:focus{outline:none}
 #mapSvg,#mapSvg *{user-select:none;-webkit-user-select:none;-moz-user-select:none}
+.selection-box{fill:rgba(100,200,255,0.1);stroke:#5cf;stroke-width:1.5;stroke-dasharray:5,5;pointer-events:none}
+.selection-box.subtract{fill:rgba(255,80,80,0.1);stroke:#f55}
+.rm.multisel{cursor:pointer}
+.bulk-swatch{background:#888!important}
 .notification{position:fixed;bottom:16px;left:16px;background:var(--panel);border:1px solid var(--border);padding:10px 16px;border-radius:4px;font-size:12px;z-index:100;animation:fadeIn .2s}
 .notification.error{border-color:var(--danger)}
 .notification.success{border-color:var(--success)}
diff --git a/internal/admin/static/map.js b/internal/admin/static/map.js
index aeb2d57..1f67275 100644
--- a/internal/admin/static/map.js
+++ b/internal/admin/static/map.js
@@ -9,6 +9,8 @@ var ctrlHeld = false;
 var delOneWay = false;
 var delDrag = false, delFromId = null, delTargetId = null;
 var roomMap = {}, occupied = {};
+var multiSelectedIds = new Set();
+var multiDrag = false, multiSubtract = false, multiStartSVGX = 0, multiStartSVGY = 0;
 var dirChangedByUser = false;
 var currentPanelTab = 0;
 var gridDirs = [
@@ -33,6 +35,10 @@ function isCtrlKey(e) {
 }
 
 function onMapMouseMove(e) {
+  if (multiDrag) {
+    updateSelectionBox(e);
+    return;
+  }
   if (!dragging) return;
   var moved = Math.abs(e.clientX - startX) >= 4 || Math.abs(e.clientY - startY) >= 4;
 
@@ -65,6 +71,13 @@ function onMapMouseUp(e) {
   document.removeEventListener('mouseup', onMapMouseUp);
   _mapMouseCleanup = false;
 
+  if (multiDrag) {
+    finalizeMultiSelect(e);
+    multiDrag = false; multiSubtract = false; dragging = false; dragRoom = false;
+    if (document.activeElement && document.activeElement.blur) document.activeElement.blur();
+    return;
+  }
+
   var moved = Math.abs(e.clientX - startX) >= 4 || Math.abs(e.clientY - startY) >= 4;
 
   if (delFromId && !delDrag && !moved) {
@@ -113,7 +126,9 @@ function cancelMapDrag() {
   clearLinkHighlight();
   clearDelHighlight();
   hideDragBadge();
+  removeSelectionBox();
   dragging = false; dragRoom = false;
+  multiDrag = false; multiSubtract = false;
   linkDrag = false; linkFromId = null; linkTargetId = null; linkTargetDir = null; linkGhostDir = null; linkDragOneWay = false;
   delDrag = false; delFromId = null; delTargetId = null; delOneWay = false;
   if (document.activeElement && document.activeElement.blur) document.activeElement.blur();
@@ -153,6 +168,7 @@ function refreshDragMode(ctrlDown) {
 function changeZ(dz) {
   if (dz === 0) currentZ = 0; else currentZ += dz;
   panX = 0; panY = 0; scale = 1;
+  clearMultiSelectSilent();
   loadMap();
 }
 
@@ -161,6 +177,7 @@ function changeDir(dir) {
   dirChangedByUser = true;
   selectedRoom = null;
   panX = 0; panY = 0; scale = 1;
+  clearMultiSelectSilent();
   loadMap();
 }
 
@@ -279,7 +296,12 @@ function renderMap(data) {
       var fill = resolveColor(r.color);
       var txtColor = hexLuminance(fill) > 0.35 ? '#111' : '#fff';
       var sel = selectedRoom === r.id;
-      roomHTML += '<rect class="rm" x="'+x+'" y="'+y+'" width="'+w+'" height="'+h+'" rx="5" fill="'+fill+'" stroke="'+(sel?'#fff':fill)+'" stroke-width="'+(sel?3:1.5)+'" data-id="'+r.id+'"/>';
+      var multi = multiSelectedIds.has(r.id);
+      var stroke = '#fff', strokeW = 3;
+      if (sel && !multi) { stroke = '#fff'; strokeW = 3; }
+      else if (multi) { stroke = '#5cf'; strokeW = 3.5; }
+      else { stroke = fill; strokeW = 1.5; }
+      roomHTML += '<rect class="rm'+(multi?' multisel':'')+'" x="'+x+'" y="'+y+'" width="'+w+'" height="'+h+'" rx="5" fill="'+fill+'" stroke="'+stroke+'" stroke-width="'+strokeW+'" data-id="'+r.id+'"/>';
 
       var dimColor = hexLuminance(fill) > 0.35 ? 'rgba(0,0,0,0.45)' : 'rgba(255,255,255,0.4)';
       roomHTML += '<text x="'+(x+w/2)+'" y="'+(y+14)+'" text-anchor="middle" font-size="8" fill="'+dimColor+'" font-family="monospace" pointer-events="none">#'+r.id+'</text>';
@@ -331,6 +353,7 @@ function renderMap(data) {
     svg.setAttribute('tabindex', '0');
     svg.addEventListener('keydown', function(e) {
       if (isCtrlKey(e)) { ctrlHeld = true; if (dragging) refreshDragMode(true); }
+      if (e.key === 'Escape' && multiSelectedIds.size > 0) { clearMultiSelect(); e.preventDefault(); }
     });
     svg.addEventListener('keyup', function(e) {
       if (isCtrlKey(e)) { ctrlHeld = false; if (dragging) refreshDragMode(false); }
@@ -345,6 +368,10 @@ function renderMap(data) {
     var onUdBtn = e.target.classList.contains('ud-btn');
     var onNavBtn = e.target.classList.contains('nav-btn');
 
+    if (!e.shiftKey && multiSelectedIds.size > 0) {
+      clearMultiSelect();
+    }
+
     if (onNavBtn) {
       e.stopPropagation();
       var dz = parseInt(e.target.getAttribute('data-dz'));
@@ -354,6 +381,26 @@ function renderMap(data) {
       return;
     }
 
+    if (e.shiftKey && e.button === 2) {
+      e.preventDefault();
+      multiDrag = true;
+      multiSubtract = true;
+      dragging = true;
+      if (svg.focus) svg.focus();
+      startX = e.clientX; startY = e.clientY;
+      prevX = e.clientX; prevY = e.clientY;
+      var coords = screenToSVGCoords(e);
+      multiStartSVGX = coords.svgX; multiStartSVGY = coords.svgY;
+      dragRoom = true;
+      linkFromId = null; linkDrag = false; linkTargetId = null; linkGhostDir = null;
+      delDrag = false; delFromId = null; delTargetId = null;
+      clearLinkHighlight(); clearDelHighlight();
+      document.addEventListener('mousemove', onMapMouseMove);
+      document.addEventListener('mouseup', onMapMouseUp);
+      _mapMouseCleanup = true;
+      return;
+    }
+
     if (e.button === 2 && onRoom) {
       delFromId = parseInt(e.target.getAttribute('data-id'));
       delDrag = false; delTargetId = null; delOneWay = false;
@@ -378,6 +425,24 @@ function renderMap(data) {
       return;
     }
 
+    if (e.shiftKey) {
+      multiDrag = true;
+      dragging = true;
+      if (svg.focus) svg.focus();
+      startX = e.clientX; startY = e.clientY;
+      prevX = e.clientX; prevY = e.clientY;
+      var coords = screenToSVGCoords(e);
+      multiStartSVGX = coords.svgX; multiStartSVGY = coords.svgY;
+      dragRoom = true;
+      linkFromId = null; linkDrag = false; linkTargetId = null; linkGhostDir = null;
+      delDrag = false; delFromId = null; delTargetId = null;
+      clearLinkHighlight(); clearDelHighlight();
+      document.addEventListener('mousemove', onMapMouseMove);
+      document.addEventListener('mouseup', onMapMouseUp);
+      _mapMouseCleanup = true;
+      return;
+    }
+
     dragRoom = onRoom || onGhost;
     dragging = true;
     if (svg.focus) svg.focus();
@@ -450,6 +515,8 @@ function selectRoom(id) {
   if (saveTimer) { clearTimeout(saveTimer); saveTimer = null; }
   var prev = selectedRoom;
   selectedRoom = id;
+  multiSelectedIds.clear();
+  removeSelectionBox();
 
   if (mapData && prev !== id) {
     renderMap(mapData);
@@ -2885,6 +2952,284 @@ function reloadRoomDirs(cb) {
   });
 }
 
+function screenToSVGCoords(e) {
+  var svgEl = $('#mapSvg');
+  if (!svgEl) return null;
+  var rect = svgEl.getBoundingClientRect();
+  var mx = e.clientX - rect.left;
+  var my = e.clientY - rect.top;
+  var vb = svgEl.getAttribute('viewBox');
+  if (!vb) return null;
+  var parts = vb.split(' ');
+  var vbX = parseFloat(parts[0]), vbY = parseFloat(parts[1]);
+  var vbW = parseFloat(parts[2]), vbH = parseFloat(parts[3]);
+  var svgX = vbX + mx * vbW / rect.width;
+  var svgY = vbY + my * vbH / rect.height;
+  return {
+    svgX: svgX, svgY: svgY,
+    gridX: Math.floor(svgX / CELL),
+    gridY: Math.floor(svgY / CELL)
+  };
+}
+
+function updateSelectionBox(e) {
+  var coords = screenToSVGCoords(e);
+  if (!coords) return;
+
+  var g = document.querySelector('#mapSvg g');
+  if (!g) return;
+
+  var x1 = Math.min(multiStartSVGX, coords.svgX);
+  var y1 = Math.min(multiStartSVGY, coords.svgY);
+  var x2 = Math.max(multiStartSVGX, coords.svgX);
+  var y2 = Math.max(multiStartSVGY, coords.svgY);
+
+  var box = document.getElementById('__multi_box');
+  if (!box) {
+    var ns = 'http://www.w3.org/2000/svg';
+    box = document.createElementNS(ns, 'rect');
+    box.id = '__multi_box';
+    box.classList.add('selection-box');
+    g.appendChild(box);
+  }
+  box.setAttribute('x', x1);
+  box.setAttribute('y', y1);
+  box.setAttribute('width', x2 - x1);
+  box.setAttribute('height', y2 - y1);
+  if (multiSubtract) {
+    box.classList.add('subtract');
+  } else {
+    box.classList.remove('subtract');
+  }
+
+  var startCoords = {gridX: Math.floor(multiStartSVGX/CELL), gridY: Math.floor(multiStartSVGY/CELL)};
+  var gx1 = Math.min(startCoords.gridX, coords.gridX);
+  var gy1 = Math.min(startCoords.gridY, coords.gridY);
+  var gx2 = Math.max(startCoords.gridX, coords.gridX);
+  var gy2 = Math.max(startCoords.gridY, coords.gridY);
+
+  var allRms = document.querySelectorAll('.rm');
+  for (var r = 0; r < allRms.length; r++) {
+    var rm = allRms[r];
+    var rid = parseInt(rm.getAttribute('data-id'));
+    if (multiSelectedIds.has(rid)) {
+      rm.setAttribute('stroke', '#5cf');
+      rm.setAttribute('stroke-width', '3.5');
+    } else {
+      var fill = rm.getAttribute('fill');
+      rm.setAttribute('stroke', fill);
+      rm.setAttribute('stroke-width', '1.5');
+    }
+  }
+
+  for (var gx = gx1; gx <= gx2; gx++) {
+    for (var gy = gy1; gy <= gy2; gy++) {
+      var rId = occupied[gx+','+gy];
+      if (rId === undefined) continue;
+      var rm = document.querySelector('.rm[data-id="'+rId+'"]');
+      if (!rm) continue;
+      if (multiSubtract) {
+        if (multiSelectedIds.has(rId)) {
+          rm.setAttribute('stroke', '#f55');
+          rm.setAttribute('stroke-width', '3.5');
+        }
+      } else {
+        if (!multiSelectedIds.has(rId)) {
+          rm.setAttribute('stroke', '#5cf');
+          rm.setAttribute('stroke-width', '3.5');
+        }
+      }
+    }
+  }
+}
+
+function removeSelectionBox() {
+  var box = document.getElementById('__multi_box');
+  if (box) box.remove();
+}
+
+function finalizeMultiSelect(e) {
+  var coords = screenToSVGCoords(e);
+  removeSelectionBox();
+
+  if (!coords) return;
+
+  var startCoords = {gridX: Math.floor(multiStartSVGX/CELL), gridY: Math.floor(multiStartSVGY/CELL)};
+  var gx1 = Math.min(startCoords.gridX, coords.gridX);
+  var gy1 = Math.min(startCoords.gridY, coords.gridY);
+  var gx2 = Math.max(startCoords.gridX, coords.gridX);
+  var gy2 = Math.max(startCoords.gridY, coords.gridY);
+
+  var changed = false;
+  for (var gx = gx1; gx <= gx2; gx++) {
+    for (var gy = gy1; gy <= gy2; gy++) {
+      var key = gx+','+gy;
+      if (occupied[key] !== undefined) {
+        if (multiSubtract) {
+          if (multiSelectedIds.delete(occupied[key])) changed = true;
+        } else {
+          if (!multiSelectedIds.has(occupied[key])) {
+            multiSelectedIds.add(occupied[key]);
+            changed = true;
+          }
+        }
+      }
+    }
+  }
+
+  if (multiSelectedIds.size === 0) {
+    clearMultiSelect();
+    return;
+  }
+
+  selectedRoom = null;
+  if (mapData) renderMap(mapData);
+  renderBulkPanel();
+}
+
+function clearMultiSelect() {
+  multiSelectedIds.clear();
+  multiSubtract = false;
+  removeSelectionBox();
+  if (mapData) renderMap(mapData);
+  var panel = $('#panelContent');
+  if (panel) panel.innerHTML = '<p style="color:#888;text-align:center;margin-top:40px">Click a room to view details</p>';
+}
+
+function clearMultiSelectSilent() {
+  multiSelectedIds.clear();
+  multiSubtract = false;
+  removeSelectionBox();
+  var panel = $('#panelContent');
+  if (panel) panel.innerHTML = '<p style="color:#888;text-align:center;margin-top:40px">Click a room to view details</p>';
+}
+
+function renderBulkPanel() {
+  if (multiSelectedIds.size === 0) return;
+  var panel = $('#panelContent');
+  if (!panel) return;
+
+  var ids = Array.from(multiSelectedIds);
+  var rooms = ids.map(function(id) { return roomMap[id]; }).filter(Boolean);
+
+  var colorMixed = false, firstColor = rooms.length > 0 ? (rooms[0].color || '') : '';
+  var blockNone = true, blockAll = true;
+  var dirMixedSet = new Set();
+  var hazardsByRoom = {};
+
+  rooms.forEach(function(r) {
+    if ((r.color || '') !== firstColor) colorMixed = true;
+    if (r.block_transport) blockNone = false; else blockAll = false;
+    if (r.dir) dirMixedSet.add(r.dir);
+    var h = r.hazard || '';
+    if (h) {
+      if (!hazardsByRoom[h]) hazardsByRoom[h] = [];
+      hazardsByRoom[h].push(r.id);
+    }
+  });
+
+  var hazardNames = Object.keys(hazardsByRoom);
+
+  var html = '<h2 style="font-size:15px;margin-bottom:12px;padding-bottom:6px;border-bottom:1px solid var(--border)">' + ids.length + ' rooms selected</h2>';
+  html += '<div class="panel-tab-content">';
+
+  var colorVal = colorMixed ? '' : firstColor;
+  var swatchBg = colorVal ? resolveColor(colorVal) : '#888';
+  html += '<div class="form-group color-field"><label>Color</label><span class="color-swatch" style="background:' + swatchBg + '"></span><input id="bulkRoomColor" value="' + escAttr(colorVal) + '" oninput="bulkColorChanged()" placeholder="' + (colorMixed ? 'Mixed' : 'Color') + '"></div>';
+
+  html += '<div class="form-group"><label><input type="checkbox" id="bulkBlockTransport" onchange="bulkBlockChanged()"' + (blockAll ? ' checked' : '') + '> Block Transport</label></div>';
+
+  html += '<div class="form-group"><label>Directory</label><select id="bulkRoomDir" onchange="doBulkSave({dir: this.value})"><option value="">Mixed\u2026</option></select></div>';
+
+  html += '<div class="section-search">';
+  html += '<input type="text" class="search-input" placeholder="Search hazards..." oninput="searchBulkHazards(this)">';
+  html += '<div class="search-results" style="display:none"></div>';
+  html += '</div>';
+
+  if (hazardNames.length > 0) {
+    hazardNames.forEach(function(h) {
+      html += '<div class="entry-row"><div class="entry-fields"><span class="entry-id">' + esc(h) + '</span></div><button class="btn btn-sm btn-danger" onclick="doBulkSave({hazard: \'\'}, ' + JSON.stringify(hazardsByRoom[h]) + ')">X</button></div>';
+    });
+  }
+
+  html += '</div>';
+  panel.innerHTML = html;
+
+  var preloadDirs = dirMixedSet.size === 1 ? dirMixedSet.values().next().value : null;
+
+  setTimeout(function() {
+    var cf = document.querySelector('#panelContent .color-field');
+    if (cf) {
+      bindColorField(cf);
+      var ci = cf.querySelector('input');
+      if (ci) ci.addEventListener('blur', function() { bulkColorChanged(); });
+    }
+
+    var blockCB = document.getElementById('bulkBlockTransport');
+    if (blockCB) {
+      if (blockNone) { blockCB.checked = false; blockCB.indeterminate = false; }
+      else if (blockAll) { blockCB.checked = true; blockCB.indeterminate = false; }
+      else { blockCB.indeterminate = true; }
+    }
+
+    loadRoomDirs(function(dirs) {
+      var sel = $('#bulkRoomDir');
+      if (!sel) return;
+      sel.innerHTML = '';
+      var mixedOpt = document.createElement('option');
+      mixedOpt.value = '';
+      mixedOpt.textContent = 'Mixed\u2026';
+      if (!preloadDirs) mixedOpt.selected = true;
+      sel.appendChild(mixedOpt);
+      dirs.forEach(function(d) {
+        var opt = document.createElement('option');
+        opt.value = d;
+        opt.textContent = d || '(root)';
+        if (preloadDirs && d === preloadDirs) opt.selected = true;
+        sel.appendChild(opt);
+      });
+    });
+  }, 50);
+}
+
+function bulkColorChanged() {
+  if (window._colorPickerActive) return;
+  var el = $('#bulkRoomColor');
+  if (!el) return;
+  var v = el.value;
+  if (v.length === 2 || v.length === 0) {
+    doBulkSave({color: v});
+  }
+}
+
+function bulkBlockChanged() {
+  var el = document.getElementById('bulkBlockTransport');
+  if (!el) return;
+  doBulkSave({block_transport: el.checked});
+}
+
+function searchBulkHazards(input) {
+  searchAndShow(input, 'hazards', function(r) { doBulkSave({hazard: r.id}); });
+}
+
+function doBulkSave(patch, customIds) {
+  var ids = customIds || Array.from(multiSelectedIds);
+  if (ids.length === 0) return;
+
+  if (patch.hasOwnProperty('hazard') && patch.hazard === null) delete patch.hazard;
+  if (patch.hasOwnProperty('dir') && (patch.dir === '' || patch.dir === null)) delete patch.dir;
+  if (!patch.hasOwnProperty('hazard') && !patch.hasOwnProperty('block_transport') && !patch.hasOwnProperty('color') && !patch.hasOwnProperty('dir')) return;
+
+  API.post('/api/rooms/bulk-edit', {patch: patch, ids: ids}).then(function(res) {
+    if (res.error) { notify(res.error, 'error'); return; }
+    notify('Updated ' + res.count + ' rooms', 'success');
+    updateUndoBar();
+    loadMap().then(function() { renderBulkPanel(); });
+  }).catch(function(e) {
+    notify('Bulk update failed: ' + extractError(e), 'error');
+  });
+}
+
 document.addEventListener('DOMContentLoaded', function() { loadRoomDirs(function() { loadMap(); }); initPanelResize();
   window.addEventListener('keydown', function(e) { if (isCtrlKey(e)) { ctrlHeld = true; if (dragging) refreshDragMode(true); } });
   window.addEventListener('keyup', function(e) { if (isCtrlKey(e)) { ctrlHeld = false; if (dragging) refreshDragMode(false); } });
diff --git a/internal/admin/undo.go b/internal/admin/undo.go
index 4c39ec6..53af942 100644
--- a/internal/admin/undo.go
+++ b/internal/admin/undo.go
@@ -11,9 +11,12 @@ import (
 )
 
 type ExtraFile struct {
-	FilePath   string `json:"file_path"`
-	OldContent []byte `json:"-"`
-	NewContent []byte `json:"-"`
+	FilePath    string `json:"file_path"`
+	OldContent  []byte `json:"-"`
+	NewContent  []byte `json:"-"`
+	NewFilePath string `json:"new_file_path,omitempty"`
+	IsDelete    bool   `json:"is_delete,omitempty"`
+	IsCreate    bool   `json:"is_create,omitempty"`
 }
 
 type ChangeDesc struct {
@@ -140,14 +143,12 @@ func (us *UndoStack) applyUndo(c ChangeDesc) error {
 			}
 		}
 		for _, ef := range c.ExtraFiles {
-			os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
-			os.WriteFile(ef.FilePath, ef.OldContent, 0644)
+			applyUndoExtraFile(ef)
 		}
 	} else if c.IsCreate {
 		os.Remove(c.FilePath)
 		for _, ef := range c.ExtraFiles {
-			os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
-			os.WriteFile(ef.FilePath, ef.OldContent, 0644)
+			applyUndoExtraFile(ef)
 		}
 	} else {
 		target := c.FilePath
@@ -160,8 +161,7 @@ func (us *UndoStack) applyUndo(c ChangeDesc) error {
 			return fmt.Errorf("revert %s: %w", target, err)
 		}
 		for _, ef := range c.ExtraFiles {
-			os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
-			os.WriteFile(ef.FilePath, ef.OldContent, 0644)
+			applyUndoExtraFile(ef)
 		}
 	}
 	return nil
@@ -181,14 +181,12 @@ func (us *UndoStack) applyRedo(c ChangeDesc) error {
 			return fmt.Errorf("recreate %s: %w", target, err)
 		}
 		for _, ef := range c.ExtraFiles {
-			os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
-			os.WriteFile(ef.FilePath, ef.NewContent, 0644)
+			applyRedoExtraFile(ef)
 		}
 	} else if c.IsDelete {
 		os.Remove(c.FilePath)
 		for _, ef := range c.ExtraFiles {
-			os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
-			os.WriteFile(ef.FilePath, ef.NewContent, 0644)
+			applyRedoExtraFile(ef)
 		}
 	} else {
 		target := c.FilePath
@@ -201,13 +199,46 @@ func (us *UndoStack) applyRedo(c ChangeDesc) error {
 			return fmt.Errorf("reapply %s: %w", target, err)
 		}
 		for _, ef := range c.ExtraFiles {
-			os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
-			os.WriteFile(ef.FilePath, ef.NewContent, 0644)
+			applyRedoExtraFile(ef)
 		}
 	}
 	return nil
 }
 
+func applyUndoExtraFile(ef ExtraFile) {
+	switch {
+	case ef.IsCreate:
+		os.Remove(ef.FilePath)
+	case ef.IsDelete:
+		os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
+		os.WriteFile(ef.FilePath, ef.OldContent, 0644)
+	case ef.NewFilePath != "":
+		os.Remove(ef.NewFilePath)
+		os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
+		os.WriteFile(ef.FilePath, ef.OldContent, 0644)
+	default:
+		os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
+		os.WriteFile(ef.FilePath, ef.OldContent, 0644)
+	}
+}
+
+func applyRedoExtraFile(ef ExtraFile) {
+	switch {
+	case ef.IsDelete:
+		os.Remove(ef.FilePath)
+	case ef.IsCreate:
+		os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
+		os.WriteFile(ef.FilePath, ef.NewContent, 0644)
+	case ef.NewFilePath != "":
+		os.Remove(ef.FilePath)
+		os.MkdirAll(filepath.Dir(ef.NewFilePath), 0755)
+		os.WriteFile(ef.NewFilePath, ef.NewContent, 0644)
+	default:
+		os.MkdirAll(filepath.Dir(ef.FilePath), 0755)
+		os.WriteFile(ef.FilePath, ef.NewContent, 0644)
+	}
+}
+
 func (us *UndoStack) Info() UndoInfo {
 	us.mu.Lock()
 	defer us.mu.Unlock()
@@ -228,9 +259,12 @@ func (us *UndoStack) Info() UndoInfo {
 
 func (us *UndoStack) save() {
 	type extraEntry struct {
-		FilePath   string `json:"file_path"`
-		OldContent string `json:"old_content"`
-		NewContent string `json:"new_content"`
+		FilePath    string `json:"file_path"`
+		NewFilePath string `json:"new_file_path,omitempty"`
+		OldContent  string `json:"old_content"`
+		NewContent  string `json:"new_content"`
+		IsDelete    bool   `json:"is_delete,omitempty"`
+		IsCreate    bool   `json:"is_create,omitempty"`
 	}
 	type entry struct {
 		Time        string       `json:"time"`
@@ -253,9 +287,12 @@ func (us *UndoStack) save() {
 			var extra []extraEntry
 			for _, ef := range c.ExtraFiles {
 				extra = append(extra, extraEntry{
-					FilePath:   ef.FilePath,
-					OldContent: string(ef.OldContent),
-					NewContent: string(ef.NewContent),
+					FilePath:    ef.FilePath,
+					NewFilePath: ef.NewFilePath,
+					OldContent:  string(ef.OldContent),
+					NewContent:  string(ef.NewContent),
+					IsDelete:    ef.IsDelete,
+					IsCreate:    ef.IsCreate,
 				})
 			}
 			entries = append(entries, entry{
@@ -293,9 +330,12 @@ func (us *UndoStack) load() {
 	}
 	log.Printf("undo: loaded history from %s", us.filePath)
 	type extraEntry struct {
-		FilePath   string `json:"file_path"`
-		OldContent string `json:"old_content"`
-		NewContent string `json:"new_content"`
+		FilePath    string `json:"file_path"`
+		NewFilePath string `json:"new_file_path,omitempty"`
+		OldContent  string `json:"old_content"`
+		NewContent  string `json:"new_content"`
+		IsDelete    bool   `json:"is_delete,omitempty"`
+		IsCreate    bool   `json:"is_create,omitempty"`
 	}
 	type entry struct {
 		Time        string       `json:"time"`
@@ -322,9 +362,12 @@ func (us *UndoStack) load() {
 			var extra []ExtraFile
 			for _, ef := range e.ExtraFiles {
 				extra = append(extra, ExtraFile{
-					FilePath:   ef.FilePath,
-					OldContent: []byte(ef.OldContent),
-					NewContent: []byte(ef.NewContent),
+					FilePath:    ef.FilePath,
+					NewFilePath: ef.NewFilePath,
+					OldContent:  []byte(ef.OldContent),
+					NewContent:  []byte(ef.NewContent),
+					IsDelete:    ef.IsDelete,
+					IsCreate:    ef.IsCreate,
 				})
 			}
 			changes = append(changes, ChangeDesc{