feat(editor): select all, recent zones, minimap selection highlights

- Ctrl+A selects all placed objects, context menu has Select All item
- selectAll() added to ObjectPlacer, works with multi-select transforms
- Recent Zones submenu in File menu (last 8 loaded zones, deduplicated)
- Minimap: selected objects shown as white dots with gold ring outline
  vs yellow dots for unselected objects
- Help panel updated with Ctrl+A and Ctrl+Shift+Click documentation

tools/editor/editor_app.cpp

@@ -302,6 +302,10 @@ void EditorApp::processEvents() {
                     ui_.openNewTerrainDialog();
                 if (sc == SDL_SCANCODE_O && (event.key.keysym.mod & KMOD_CTRL))
                     ui_.openLoadDialog();
+                if (sc == SDL_SCANCODE_A && (event.key.keysym.mod & KMOD_CTRL)) {
+                    objectPlacer_.selectAll();
+                    showToast("Selected " + std::to_string(objectPlacer_.selectionCount()) + " objects");
+                }
                 // Ctrl+Y = Redo (alternate binding)
                 if (sc == SDL_SCANCODE_Y && (event.key.keysym.mod & KMOD_CTRL)) {
                     if (terrainEditor_.history().canRedo()) {
@@ -699,6 +703,13 @@ void EditorApp::loadADT(const std::string& mapName, int tileX, int tileY) {
     loadedTileX_ = tileX;
     loadedTileY_ = tileY;
 
+    // Track recent zones (deduplicate, max 8)
+    recentZones_.erase(std::remove_if(recentZones_.begin(), recentZones_.end(),
+        [&](const RecentZone& rz) { return rz.mapName == mapName && rz.tileX == tileX && rz.tileY == tileY; }),
+        recentZones_.end());
+    recentZones_.insert(recentZones_.begin(), {mapName, tileX, tileY});
+    if (recentZones_.size() > 8) recentZones_.resize(8);
+
     // Position camera at terrain center using actual chunk positions
     if (mesh.validChunkCount > 0) {
         auto& firstChunk = mesh.chunks[0];

tools/editor/editor_app.hpp

@@ -138,12 +138,17 @@ private:
     bool autoSaveEnabled_ = true;
     bool showQuitConfirm_ = false;
 
+    // Recent zones
+    struct RecentZone { std::string mapName; int tileX; int tileY; };
+    std::vector<RecentZone> recentZones_;
+
     // Toast notifications
     struct Toast { std::string msg; float timer; };
     std::vector<Toast> toasts_;
 public:
     void showToast(const std::string& msg, float duration = 3.0f);
     const std::vector<Toast>& getToasts() const { return toasts_; }
+    const std::vector<RecentZone>& getRecentZones() const { return recentZones_; }
     void updateToasts(float dt);
 private:
     size_t lastObjCount_ = 0;

tools/editor/editor_ui.cpp

@@ -254,6 +254,16 @@ void EditorUI::renderMenuBar(EditorApp& app) {
                 }
                 ImGui::EndMenu();
             }
+            if (ImGui::BeginMenu("Recent Zones", !app.getRecentZones().empty())) {
+                for (const auto& rz : app.getRecentZones()) {
+                    char label[128];
+                    std::snprintf(label, sizeof(label), "%s [%d, %d]",
+                                  rz.mapName.c_str(), rz.tileX, rz.tileY);
+                    if (ImGui::MenuItem(label))
+                        app.loadADT(rz.mapName, rz.tileX, rz.tileY);
+                }
+                ImGui::EndMenu();
+            }
             if (ImGui::BeginMenu("Content Packs (.wcp)")) {
                 static char wcpImportPath[256] = "content.wcp";
                 ImGui::InputText("Path##wcp", wcpImportPath, sizeof(wcpImportPath));
@@ -489,7 +499,9 @@ void EditorUI::renderMenuBar(EditorApp& app) {
             ImGui::Text("Quick Actions:");
             ImGui::BulletText("Ctrl+N — new terrain");
             ImGui::BulletText("Ctrl+O — load map tile");
+            ImGui::BulletText("Ctrl+A — select all objects");
             ImGui::BulletText("Alt+Click — eyedropper (paint mode)");
+            ImGui::BulletText("Ctrl+Shift+Click — add to selection");
             ImGui::BulletText("Middle-drag — orbit camera");
             ImGui::Separator();
             ImGui::Text("View:");
@@ -2044,6 +2056,9 @@ void EditorUI::renderContextMenu(EditorApp& app) {
             else { app.getNpcSpawner().removeCreature(app.getNpcSpawner().getSelectedIndex()); }
             app.markObjectsDirty();
         }
+        if (ImGui::MenuItem("Select All", "Ctrl+A")) {
+            app.getObjectPlacer().selectAll();
+        }
         if (ImGui::MenuItem("Deselect")) {
             app.getObjectPlacer().clearSelection();
             app.getNpcSpawner().clearSelection();
@@ -2110,7 +2125,7 @@ void EditorUI::renderMinimap(EditorApp& app) {
             }
         }
 
-        // Draw objects as yellow dots
+        // Draw objects (yellow=normal, white+ring=selected)
         float tileNW_X = (32.0f - static_cast<float>(terrain->coord.y)) * 533.33333f;
         float tileNW_Y = (32.0f - static_cast<float>(terrain->coord.x)) * 533.33333f;
         for (const auto& obj : app.getObjectPlacer().getObjects()) {
@@ -2118,7 +2133,12 @@ void EditorUI::renderMinimap(EditorApp& app) {
             float v = (tileNW_Y - obj.position.y) / 533.33333f;
             if (u >= 0 && u <= 1 && v >= 0 && v <= 1) {
                 ImVec2 pt(origin.x + v * avail.x, origin.y + u * (16 * cellH));
-                dl->AddCircleFilled(pt, 2.0f, IM_COL32(255, 220, 50, 200));
+                if (obj.selected) {
+                    dl->AddCircleFilled(pt, 3.5f, IM_COL32(255, 255, 255, 230));
+                    dl->AddCircle(pt, 5.0f, IM_COL32(255, 200, 50, 200), 0, 1.5f);
+                } else {
+                    dl->AddCircleFilled(pt, 2.0f, IM_COL32(255, 220, 50, 200));
+                }
             }
         }
         // Draw NPCs as red dots

tools/editor/object_placer.cpp

@@ -111,6 +111,15 @@ PlacedObject* ObjectPlacer::getSelected() {
     return &objects_[selectedIdx_];
 }
 
+void ObjectPlacer::selectAll() {
+    clearSelection();
+    for (int i = 0; i < static_cast<int>(objects_.size()); i++) {
+        objects_[i].selected = true;
+        selectedIndices_.push_back(i);
+    }
+    if (!objects_.empty()) selectedIdx_ = 0;
+}
+
 void ObjectPlacer::moveSelected(const glm::vec3& delta) {
     if (selectedIndices_.size() > 1) {
         for (int idx : selectedIndices_) objects_[idx].position += delta;

tools/editor/object_placer.hpp

@@ -60,7 +60,8 @@ public:
 
     const std::vector<PlacedObject>& getObjects() const { return objects_; }
     std::vector<PlacedObject>& getObjects() { return objects_; }
-    void clearAll() { objects_.clear(); undoStack_.clear(); selectedIdx_ = -1; }
+    void selectAll();
+    void clearAll() { objects_.clear(); undoStack_.clear(); selectedIdx_ = -1; selectedIndices_.clear(); }
     size_t objectCount() const { return objects_.size(); }
 
     float getPlacementRotationY() const { return placementRotY_; }