feat(tui): 增加 Todo 可视化面板

internal/tui/core/app/app.go

@@ -28,6 +28,7 @@ type panel = tuistate.Panel
 const (
 	panelTranscript panel = tuistate.PanelTranscript
 	panelActivity   panel = tuistate.PanelActivity
+	panelTodo       panel = tuistate.PanelTodo
 	panelInput      panel = tuistate.PanelInput
 )
 
@@ -84,6 +85,7 @@ type appComponents struct {
 	progress         progress.Model
 	transcript       viewport.Model
 	activity         viewport.Model
+	todo             viewport.Model
 	input            textarea.Model
 	markdownRenderer markdownContentRenderer
 }
@@ -101,6 +103,11 @@ type appRuntimeState struct {
 	pasteMode               bool
 	activeMessages          []providertypes.Message
 	activities              []tuistate.ActivityEntry
+	todoItems               []todoViewItem
+	todoFilter              todoFilter
+	todoSelectedIndex       int
+	todoPanelVisible        bool
+	todoCollapsed           bool
 	fileCandidates          []string
 	modelRefreshID          string
 	focus                   panel
@@ -111,6 +118,10 @@ type appRuntimeState struct {
 	pendingPermission       *permissionPromptState
 	pendingImageAttachments []pendingImageAttachment
 	providerAddForm         *providerAddFormState
+	layoutCached            bool
+	cachedWidth             int
+	cachedHeight            int
+	viewDirty               bool
 }
 
 type pendingImageAttachment struct {
@@ -265,13 +276,18 @@ func newApp(container tuibootstrap.Container) (App, error) {
 			progress:         progressBar,
 			transcript:       viewport.New(0, 0),
 			activity:         viewport.New(0, 0),
+			todo:             viewport.New(0, 0),
 			input:            input,
 			markdownRenderer: markdownRenderer,
 		},
 		appRuntimeState: appRuntimeState{
 			codeCopyBlocks: make(map[int]string),
 			nowFn:          time.Now,
 			focus:          panelInput,
+			todoFilter:     todoFilterAll,
+			layoutCached:   true,
+			cachedWidth:    128,
+			cachedHeight:   40,
 		},
 		width:  128,
 		height: 40,
@@ -299,11 +315,16 @@ func newApp(container tuibootstrap.Container) (App, error) {
 	return app, nil
 }
 
+type tickMsg time.Time
+
 func (a App) Init() tea.Cmd {
 	cmds := []tea.Cmd{
 		ListenForRuntimeEvent(a.runtime.Events()),
 		textarea.Blink,
 		a.spinner.Tick,
+		tea.Tick(100*time.Millisecond, func(t time.Time) tea.Msg {
+			return tickMsg(t)
+		}),
 	}
 	if cmd := runModelCatalogRefresh(a.providerSvc, a.modelRefreshID); cmd != nil {
 		cmds = append(cmds, cmd)

internal/tui/core/app/commands.go

@@ -62,6 +62,7 @@ const (
 
 	activityTitle    = "Activity"
 	activitySubtitle = "Latest execution events"
+	todoTitle        = "Todos"
 
 	draftSessionTitle     = "Draft"
 	emptyConversationText = "No conversation yet.\nAsk NeoCode to inspect or change code, or type /help to browse local commands."
@@ -85,6 +86,9 @@ const (
 	statusChooseProvider       = "Choose a provider"
 	statusChooseModel          = "Choose a model"
 	statusChooseSession        = "Choose a session"
+	statusTodoFilterChanged    = "Todo filter updated"
+	statusTodoCollapsed        = "Todo list collapsed"
+	statusTodoExpanded         = "Todo list expanded"
 	statusChooseHelp           = "Choose a slash command"
 	statusBrowseFile           = "Browse workspace files"
 	statusPermissionRequired   = "Permission required: choose a decision and press Enter"
@@ -94,6 +98,7 @@ const (
 	focusLabelSessions   = "Sessions"
 	focusLabelTranscript = "Transcript"
 	focusLabelActivity   = "Activity"
+	focusLabelTodo       = "Todo"
 	focusLabelComposer   = "Composer"
 
 	maxActivityEntries = 64

internal/tui/core/app/commands_test.go

@@ -19,15 +19,21 @@ func TestBuiltinSlashCommands(t *testing.T) {
 	}
 
 	found := false
+	foundTodo := false
 	for _, cmd := range builtinSlashCommands {
 		if cmd.Usage == slashUsageHelp {
 			found = true
-			break
+		}
+		if strings.HasPrefix(cmd.Usage, "/todo") {
+			foundTodo = true
 		}
 	}
 	if !found {
 		t.Error("expected to find /help command")
 	}
+	if foundTodo {
+		t.Error("did not expect /todo command in builtin slash commands")
+	}
 }
 
 func TestNewSelectionPicker(t *testing.T) {
@@ -75,6 +81,8 @@ func TestStatusConstants(t *testing.T) {
 		{"statusCompacting", statusCompacting},
 		{"statusChooseProvider", statusChooseProvider},
 		{"statusChooseModel", statusChooseModel},
+		{"statusTodoCollapsed", statusTodoCollapsed},
+		{"statusTodoExpanded", statusTodoExpanded},
 		{"statusChooseHelp", statusChooseHelp},
 		{"statusBrowseFile", statusBrowseFile},
 	}
@@ -98,6 +106,9 @@ func TestFocusLabels(t *testing.T) {
 	if focusLabelActivity == "" {
 		t.Error("focusLabelActivity should not be empty")
 	}
+	if focusLabelTodo == "" {
+		t.Error("focusLabelTodo should not be empty")
+	}
 	if focusLabelComposer == "" {
 		t.Error("focusLabelComposer should not be empty")
 	}

internal/tui/core/app/permission_prompt_test.go

@@ -89,6 +89,9 @@ func TestRenderPermissionPrompt(t *testing.T) {
 				},
 				Selected: 0,
 			},
+			layoutCached: true,
+			cachedWidth:  128,
+			cachedHeight: 40,
 		},
 	}
 	rendered := app.renderPermissionPrompt()
@@ -163,6 +166,9 @@ func TestRenderPromptWithPendingPermission(t *testing.T) {
 				Request:  agentruntime.PermissionRequestPayload{ToolName: "bash", Target: "git status"},
 				Selected: 0,
 			},
+			layoutCached: true,
+			cachedWidth:  128,
+			cachedHeight: 40,
 		},
 	}
 	rendered := app.renderPrompt(80)