feat(tui): add Ctrl+Home/Ctrl+End shortcuts to scroll the transcript viewport to top/bottom

internal/cli/chat_tui.go

@@ -806,6 +806,12 @@ func (m chatTUI) update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		case "pgdown":
 			m.viewport.PageDown()
 			return m, finalize(m, cmds)
+		case "ctrl+home":
+			m.viewport.GotoTop()
+			return m, finalize(m, cmds)
+		case "ctrl+end":
+			m.viewport.GotoBottom()
+			return m, finalize(m, cmds)
 		case "ctrl+z":
 			return m, tea.Suspend
 		}

internal/cli/chat_tui_test.go

@@ -582,6 +582,37 @@ func TestInsertNewlineKeyBinding(t *testing.T) {
 	}
 }
 
+func TestCtrlHomeEndScrollKeyBindings(t *testing.T) {
+	ctrl := control.New(control.Options{})
+	ch := make(chan event.Event, 1)
+	notice := agentEventMsg(event.Event{Kind: event.Notice, Level: event.LevelInfo, Text: "line"})
+	adv := func(m chatTUI, msg tea.Msg) chatTUI {
+		n, _ := m.Update(msg)
+		return n.(chatTUI)
+	}
+
+	cur := adv(newChatTUI(ctrl, "", ch, 80), tea.WindowSizeMsg{Width: 80, Height: 8})
+	for i := 0; i < 12; i++ {
+		cur = adv(cur, notice)
+	}
+	// Viewport should be at the bottom after output.
+	if !cur.viewport.AtBottom() {
+		t.Fatal("viewport should start at the bottom after streaming output")
+	}
+
+	// Ctrl+Home should scroll to the top.
+	cur = adv(cur, tea.KeyPressMsg{Code: tea.KeyHome, Mod: tea.ModCtrl})
+	if !cur.viewport.AtTop() {
+		t.Fatalf("ctrl+home should scroll to top, AtTop=%v, YOffset=%d", cur.viewport.AtTop(), cur.viewport.YOffset())
+	}
+
+	// Ctrl+End should scroll back to the bottom.
+	cur = adv(cur, tea.KeyPressMsg{Code: tea.KeyEnd, Mod: tea.ModCtrl})
+	if !cur.viewport.AtBottom() {
+		t.Fatalf("ctrl+end should scroll to bottom, AtBottom=%v, YOffset=%d", cur.viewport.AtBottom(), cur.viewport.YOffset())
+	}
+}
+
 func TestEchoLocalCommandAddsTranscriptMarker(t *testing.T) {
 	m := newTestChatTUI()
 	m.echoLocalCommand("  /tree  ")

internal/i18n/messages_en.go

@@ -48,7 +48,7 @@ var English = Messages{
 	ChatStatusCycleHint:         "shift+tab to cycle",
 	ChatStatusCacheNowFmt:       "turn hit %s",
 	ChatStatusCacheAvgFmt:       "avg %s",
-	ChatStatusPlanApproval:      "Enter/y approves & executes · n/Esc keeps planning · PgUp/PgDn scrolls",
+	ChatStatusPlanApproval:      "Enter/y approves & executes · n/Esc keeps planning · PgUp/PgDn/Ctrl+Home/End scrolls",
 	PlanApprovalPrompt:          "Plan ready above — Enter/y to approve & execute, n/Esc to keep planning",
 	ChatStatusToolApproval:      "1 approve once · 2 allow scope this session · 3/4 prefix or save when offered · n/Esc deny · Ctrl-C cancels turn",
 	AskTypeSomething:            "Type something else",

internal/i18n/messages_zh.go

@@ -49,7 +49,7 @@ var Chinese = Messages{
 	ChatStatusCycleHint:         "shift+tab 循环切换",
 	ChatStatusCacheNowFmt:       "本次命中 %s",
 	ChatStatusCacheAvgFmt:       "平均 %s",
-	ChatStatusPlanApproval:      "Enter/y 批准并执行 · n/Esc 继续规划 · PgUp/PgDn 滚动",
+	ChatStatusPlanApproval:      "Enter/y 批准并执行 · n/Esc 继续规划 · PgUp/PgDn/Ctrl+Home/End 滚动",
 	PlanApprovalPrompt:          "计划已生成（见上方）— Enter/y 批准执行,n/Esc 继续规划",
 	ChatStatusToolApproval:      "1 本次允许 · 2 本会话允许此范围 · 提供时 3/4 为前缀或保存 · n/Esc 拒绝 · Ctrl-C 取消本轮",
 	AskTypeSomething:            "自己输入",