Recognize Ctrl-D as a TUI quit shortcut (#447)

## Summary
- treat \ as a top-level EOF-style quit shortcut in the TUI
- make it quit from any view, including text-entry modals and review
screens
- add tests covering both review and modal paths

Closes #431

---------

Co-authored-by: Wes McKinney <wesmckinn+git@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

cmd/roborev/tui/handlers.go

@@ -75,7 +75,7 @@ func (m model) handleMouseMsg(msg tea.MouseMsg) (tea.Model, tea.Cmd) {
 // handleGlobalKey handles keys shared across queue, review, prompt, commit msg, and help views.
 func (m model) handleGlobalKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.String() {
-	case "ctrl+c", "q":
+	case "ctrl+c", "ctrl+d", "q":
 		return m.handleQuitKey()
 	case "home", "g":
 		return m.handleHomeKey()

cmd/roborev/tui/handlers_modal.go

@@ -253,7 +253,7 @@ func (m model) handleLogKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.String() {
 	case "ctrl+c":
 		return m, tea.Quit
-	case "esc", "q":
+	case "ctrl+d", "esc", "q":
 		m.currentView = m.logFromView
 		m.logStreaming = false
 		return m, nil
@@ -329,7 +329,7 @@ func (m model) handleWorktreeConfirmKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.String() {
 	case "ctrl+c":
 		return m, tea.Quit
-	case "esc", "n":
+	case "ctrl+d", "esc", "n":
 		m.currentView = viewTasks
 		m.worktreeConfirmJobID = 0
 		m.worktreeConfirmBranch = ""
@@ -347,7 +347,7 @@ func (m model) handleWorktreeConfirmKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 // handleTasksKey handles key input in the tasks view.
 func (m model) handleTasksKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.String() {
-	case "ctrl+c", "q":
+	case "ctrl+c", "ctrl+d", "q":
 		return m, tea.Quit
 	case "esc", "T":
 		m.currentView = viewQueue
@@ -504,7 +504,7 @@ func (m model) handlePatchKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.String() {
 	case "ctrl+c":
 		return m, tea.Quit
-	case "esc", "q":
+	case "ctrl+d", "esc", "q":
 		m.currentView = viewTasks
 		m.patchText = ""
 		m.patchScroll = 0

cmd/roborev/tui/handlers_queue.go

@@ -202,7 +202,7 @@ func (m model) handleColumnOptionsInput(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	}
 
 	switch msg.String() {
-	case "esc":
+	case "ctrl+d", "esc":
 		m.currentView = m.colOptionsReturnView
 		if m.currentView == viewTasks && !m.tasksWorkflowEnabled() {
 			m.currentView = viewQueue

cmd/roborev/tui/review_views_test.go

@@ -120,6 +120,50 @@ func TestTUICommitMsgViewNavigationWithQ(t *testing.T) {
 	}
 }
 
+func TestTUICtrlDQuitsFromQueueView(t *testing.T) {
+	m := initTestModel(withCurrentView(viewQueue))
+
+	_, cmd := pressSpecial(m, tea.KeyCtrlD)
+
+	if cmd == nil {
+		t.Fatal("Expected quit command")
+	}
+	assertMsgType[tea.QuitMsg](t, cmd())
+}
+
+func TestTUICtrlDNavigatesBackFromReviewView(t *testing.T) {
+	job := makeJob(1)
+	m := initTestModel(
+		withCurrentView(viewReview),
+		withReview(&storage.Review{JobID: 1, Job: &job}),
+		withReviewFromView(viewQueue),
+	)
+
+	got, _ := pressSpecial(m, tea.KeyCtrlD)
+
+	assertView(t, got, viewQueue)
+}
+
+func TestTUICtrlDNoOpInCommentModal(t *testing.T) {
+	m := initTestModel(withCurrentView(viewKindComment))
+	m.commentFromView = viewQueue
+	m.commentText = "draft comment"
+	m.commentJobID = 42
+
+	got, cmd := pressSpecial(m, tea.KeyCtrlD)
+
+	assertView(t, got, viewKindComment)
+	if got.commentText != "draft comment" {
+		t.Errorf("Expected comment text preserved, got %q", got.commentText)
+	}
+	if got.commentJobID != 42 {
+		t.Errorf("Expected comment job ID preserved, got %d", got.commentJobID)
+	}
+	if cmd != nil {
+		t.Fatal("Expected no command from Ctrl-D in comment modal")
+	}
+}
+
 func TestFetchCommitMsgJobTypeDetection(t *testing.T) {
 	// Test that fetchCommitMsg correctly identifies job types and returns appropriate errors
 	// This is critical: Prompt field is populated for ALL jobs (stores review prompt),