fix(hyprland/workspaces): handle workspace ID changes

src/modules/hyprland/workspaces.cpp

@@ -312,6 +312,8 @@ void Workspaces::onEvent(const std::string& ev) {
       onSpecialWorkspaceActivated(payload);
     } else if (eventName == "destroyworkspacev2") {
       onWorkspaceDestroyed(payload);
+    } else if (eventName == "changeworkspaceid") {
+      onWorkspaceIdChanged(payload);
     } else if (eventName == "createworkspacev2") {
       onWorkspaceCreated(payload);
     } else if (eventName == "focusedmonv2") {
@@ -449,6 +451,35 @@ void Workspaces::onWorkspaceRenamed(std::string const& payload) {
   sortWorkspaces();
 }
 
+void Workspaces::onWorkspaceIdChanged(std::string const& payload) {
+  spdlog::debug("Workspace ID changed: {}", payload);
+
+  const auto [oldIdStr, newIdStr] = splitDoublePayload(payload);
+
+  const auto oldId = parseWorkspaceId(oldIdStr);
+  const auto newId = parseWorkspaceId(newIdStr);
+
+  if (!oldId.has_value() || !newId.has_value()) {
+    spdlog::warn("Invalid workspace ID change payload: {}", payload);
+    return;
+  }
+
+  for (auto& workspace : m_workspaces) {
+    if (workspace->id() == *oldId) {
+      spdlog::debug("Changing workspace ID from {} to {}", *oldId, *newId);
+      workspace->setId(*newId);
+      break;
+    }
+  }
+
+  if (m_activeWorkspaceId == *oldId) {
+    m_activeWorkspaceId = *newId;
+  }
+
+  sortWorkspaces();
+  updateWindowCount();
+}
+
 void Workspaces::onMonitorFocused(std::string const& payload) {
   spdlog::trace("Monitor focused: {}", payload);
 
@@ -827,6 +858,7 @@ auto Workspaces::registerIpc() -> void {
   m_ipc.registerForIPC("createworkspacev2", this);
   m_ipc.registerForIPC("destroyworkspacev2", this);
   m_ipc.registerForIPC("focusedmonv2", this);
+  m_ipc.registerForIPC("changeworkspaceid", this);
   m_ipc.registerForIPC("moveworkspacev2", this);
   m_ipc.registerForIPC("renameworkspace", this);
   m_ipc.registerForIPC("openwindow", this);