feat: allow moving a task to the end

cmd/assets/guide/domain-task-priorities.md

@@ -6,6 +6,7 @@ tasks on any given day. As such, omm allows you to move tasks around in the
 priority order. It has the following keymaps to achieve this:
 
     ⏎              move task to the top
+    E              move task to the end
     J              move task one position down
     K              move task one position up
 

internal/ui/assets/help.md

@@ -51,6 +51,7 @@ omm has 6 components:
     A                  add task at the end
     u                  update task summary
     ⏎                  move task to the top
+    E                  move task to the end
     J                  move task one position down
     K                  move task one position up
 

internal/ui/update.go

@@ -629,7 +629,6 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 				var index int
 				if m.taskList.IsFiltered() {
-					m.errorMsg = "Cannot move items when the task list is filtered"
 					selected, ok := m.taskList.SelectedItem().(types.Task)
 					if !ok {
 						break
@@ -638,7 +637,6 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 					if !ok {
 						m.errorMsg = "Something went wrong; cannot move item to the top"
 					}
-
 					index = listIndex
 				} else {
 					index = m.taskList.Index()
@@ -709,6 +707,51 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 				return m, tea.Sequence(cmds...)
 			}
 
+		case "E":
+			if m.activeView != taskListView {
+				break
+			}
+
+			if len(m.taskList.Items()) == 0 {
+				break
+			}
+
+			var index int
+			if m.taskList.IsFiltered() {
+				selected, ok := m.taskList.SelectedItem().(types.Task)
+				if !ok {
+					break
+				}
+				listIndex, ok := m.tlIndexMap[selected.ID]
+				if !ok {
+					m.errorMsg = "Something went wrong; cannot move item to the end"
+				}
+				index = listIndex
+			} else {
+				index = m.taskList.Index()
+			}
+
+			lastIndex := len(m.taskList.Items()) - 1
+
+			if index == lastIndex {
+				m.errorMsg = "This item is already at the end of the list"
+				break
+			}
+
+			if m.taskList.IsFiltered() {
+				m.taskList.ResetFilter()
+				m.taskList.Select(index)
+			}
+
+			listItem := m.taskList.SelectedItem()
+			m.taskList.RemoveItem(index)
+			cmd = m.taskList.InsertItem(lastIndex, listItem)
+			cmds = append(cmds, cmd)
+			m.taskList.Select(lastIndex)
+
+			cmd = m.updateTaskSequence()
+			cmds = append(cmds, cmd)
+
 		case "c":
 			if m.activeView != taskListView && m.activeView != archivedTaskListView && m.activeView != taskDetailsView {
 				break