diff --git a/internal/app.go b/internal/app.go
index e8c7723..30ba2eb 100644
--- a/internal/app.go
+++ b/internal/app.go
@@ -11,22 +11,24 @@ import (
 
 // Model 主模型
 type Model struct {
-	activeGroup   int
-	cursor        int
-	selected      map[int]bool
-	inputBuf      string
-	width         int
-	height        int
-	launched      string
-	history       HistoryState
-	pendingCmd    string
-	update        UpdateState
-	wsFocus       int    // workspace 焦点列: 0=tabs 1=list
-	wsTabCur      int    // tabs 列光标 (0..len(Groups), 最后一个是历史入口)
-	forkMode      bool   // 分叉输入模式
-	forkBuf       string // 分叉方向提示输入
-	editTitleMode bool   // 编辑标题模式
-	editTitleBuf  string // 标题编辑缓冲区
+	activeGroup     int
+	cursor          int
+	selected        map[int]bool
+	inputBuf        string
+	width           int
+	height          int
+	launched        string
+	history         HistoryState
+	pendingCmd      string
+	update          UpdateState
+	wsFocus         int // workspace 焦点列: 0=tabs 1=list
+	wsTabCur        int // tabs 列光标 (0..len(Groups), 最后一个是历史入口)
+	Skills          SkillsState
+	forkMode        bool   // 分叉输入模式
+	forkBuf         string // 分叉方向提示输入
+	editTitleMode   bool   // 编辑标题模式
+	editTitleBuf    string // 标题编辑缓冲区
+	editTitleCursor int    // 标题光标位置（rune 索引）
 
 	// 性能缓存
 	allSessionsCache []*Session    // "全部" tab 会话切片缓存
@@ -60,8 +62,29 @@ func (m *Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.width = msg.Width
 		m.height = msg.Height
 	case ScanCompleteMsg:
+		// 保留尚未落盘的用户自定义标题：扫描从磁盘读缓存，若改名后 3s 内
+		// 触发扫描（切 tab/刷新），磁盘旧缓存会覆盖内存导致改名丢失。
+		savedTitles := map[string]string{}
+		for id, e := range m.history.Cache {
+			if e.UserTitle != "" {
+				savedTitles[id] = e.UserTitle
+			}
+		}
 		m.history.Projects = msg.Projects
 		m.history.Cache = msg.Cache
+		for id, title := range savedTitles {
+			if e, ok := m.history.Cache[id]; ok && e.UserTitle == "" {
+				e.UserTitle = title
+				m.cacheDirty = true
+			}
+			for _, pd := range m.history.Projects {
+				for _, s := range pd.Sessions {
+					if s.ID == id {
+						s.UserTitle = title
+					}
+				}
+			}
+		}
 		m.history.Loaded = true
 		m.history.Scanning = false
 		m.allSessionsDirty = true
@@ -93,6 +116,16 @@ func (m *Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.launched = fmt.Sprintf("refreshed: %d projects, %d sessions", len(msg.Projects), total)
 		// 无论本次是否有文件更新，都尝试补齐缺失的摘要
 		return m, m.nextSummaryCmd()
+	case ScanSkillsCompleteMsg:
+		m.Skills.Skills = msg.Skills
+		m.Skills.Loaded = true
+		m.Skills.Scanning = false
+		m.Skills.SkillCur = 0
+		m.Skills.FileCur = 0
+		m.Skills.FocusPanel = 0
+		m.Skills.Content = ""
+		m.Skills.ContentPath = ""
+		return m, nil
 	case SummaryResultMsg:
 		m.applySummary(msg.SessionID, msg.Summary, msg.Completed, msg.Pending)
 		m.cacheDirty = true
@@ -139,6 +172,7 @@ func (m *Model) confirmEditTitle() (*Model, tea.Cmd) {
 	title := strings.TrimSpace(m.editTitleBuf)
 	m.editTitleMode = false
 	m.editTitleBuf = ""
+	m.editTitleCursor = 0
 	if s == nil || title == "" {
 		return m, nil
 	}
diff --git a/internal/edit_title_integration_test.go b/internal/edit_title_integration_test.go
new file mode 100644
index 0000000..c092099
--- /dev/null
+++ b/internal/edit_title_integration_test.go
@@ -0,0 +1,65 @@
+package internal
+
+import (
+	"testing"
+
+	tea "charm.land/bubbletea/v2"
+)
+
+// TestEditTitleViaRealKeyPress 用真实 tea.KeyPressMsg 走完整 Update 流程，
+// 验证运行时按键是否能真正写入编辑缓冲（用户反馈"界面未能输入名称"）。
+func TestEditTitleViaRealKeyPress(t *testing.T) {
+	m := NewModel()
+	m.history.Projects = []*ProjectDir{
+		{DirShort: "test", Sessions: []*Session{
+			{ID: "s1", AISummary: "旧标题"},
+		}},
+	}
+	m.history.DirCursor = 2
+	m.history.SessCursor = 0
+	m.history.Loaded = true
+
+	send := func(msg tea.Msg) tea.Model {
+		var cmd tea.Cmd
+		var model tea.Model = m
+		model, cmd = m.Update(msg)
+		_ = cmd
+		return model
+	}
+
+	// 1. 真实按键 'e' 进入编辑模式（Code+Text 同 ultraviolet 实测构造）
+	send(tea.KeyPressMsg{Code: 'e', Text: "e"})
+	if !m.editTitleMode {
+		t.Fatal("真实 KeyPressMsg(e) 应进入编辑模式")
+	}
+	if m.editTitleBuf != "旧标题" {
+		t.Fatalf("编辑缓冲应预填旧标题, got %q", m.editTitleBuf)
+	}
+
+	// 2. 真实按键 'a'（ASCII 字符）
+	send(tea.KeyPressMsg{Code: 'a', Text: "a"})
+	if m.editTitleBuf != "旧标题a" {
+		t.Fatalf("真实按键 a 应追加, got %q", m.editTitleBuf)
+	}
+
+	// 3. 真实空格键（Code=KeySpace, Text=" "）
+	send(tea.KeyPressMsg{Code: tea.KeySpace, Text: " "})
+	if m.editTitleBuf != "旧标题a " {
+		t.Fatalf("空格应插入, got %q", m.editTitleBuf)
+	}
+
+	// 4. 真实中文输入（多 rune，Code=KeyExtended）
+	send(tea.KeyPressMsg{Code: tea.KeyExtended, Text: "新"})
+	if m.editTitleBuf != "旧标题a 新" {
+		t.Fatalf("中文应追加, got %q", m.editTitleBuf)
+	}
+
+	// 5. 回车确认
+	send(tea.KeyPressMsg{Code: tea.KeyEnter, Text: ""})
+	if m.editTitleMode {
+		t.Fatal("回车应退出编辑模式")
+	}
+	if m.launched != "rename: 旧标题a 新" {
+		t.Fatalf("确认后 launched 应记录改名, got %q", m.launched)
+	}
+}
diff --git a/internal/edit_title_test.go b/internal/edit_title_test.go
new file mode 100644
index 0000000..19aa043
--- /dev/null
+++ b/internal/edit_title_test.go
@@ -0,0 +1,101 @@
+package internal
+
+import "testing"
+
+// TestEditTitleInput 验证编辑标题模式下的按键输入逻辑
+func TestEditTitleInput(t *testing.T) {
+	m := NewModel()
+	m.history.Projects = []*ProjectDir{
+		{DirShort: "test", Sessions: []*Session{
+			{ID: "s1", AISummary: "旧标题"},
+		}},
+	}
+	m.history.DirCursor = 2
+	m.history.SessCursor = 0
+	m.history.FocusPanel = 1
+	m.history.Loaded = true
+
+	// 1. 按 e 进入编辑模式
+	m, _ = m.handleKey("e")
+	if !m.editTitleMode {
+		t.Fatal("按 e 应进入编辑模式")
+	}
+	if m.editTitleBuf != "旧标题" {
+		t.Fatalf("编辑缓冲应预填旧标题, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 3 {
+		t.Fatalf("光标应在末尾, got %d", m.editTitleCursor)
+	}
+
+	// 2. 输入英文 a
+	m, _ = m.handleKey("a")
+	if m.editTitleBuf != "旧标题a" {
+		t.Fatalf("输入 a 应追加, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 4 {
+		t.Fatalf("输入 a 后光标应在 4, got %d", m.editTitleCursor)
+	}
+
+	// 3. 空格
+	m, _ = m.handleKey("space")
+	if m.editTitleBuf != "旧标题a " {
+		t.Fatalf("空格应插入空格, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 5 {
+		t.Fatalf("空格后光标应在 5, got %d", m.editTitleCursor)
+	}
+
+	// 4. backspace 删末尾
+	m, _ = m.handleKey("backspace")
+	if m.editTitleBuf != "旧标题a" {
+		t.Fatalf("backspace 应删末尾, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 4 {
+		t.Fatalf("backspace 后光标应在 4, got %d", m.editTitleCursor)
+	}
+
+	// 5. 输入中文 新
+	m, _ = m.handleKey("新")
+	if m.editTitleBuf != "旧标题a新" {
+		t.Fatalf("输入中文应追加, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 5 {
+		t.Fatalf("输入中文后光标应在 5, got %d", m.editTitleCursor)
+	}
+
+	// 6. 左移光标
+	m, _ = m.handleKey("left")
+	if m.editTitleCursor != 4 {
+		t.Fatalf("左移后光标应在 4, got %d", m.editTitleCursor)
+	}
+
+	// 7. 在光标处插入
+	m, _ = m.handleKey("X")
+	if m.editTitleBuf != "旧标题aX新" {
+		t.Fatalf("光标处插入 'X' 失败, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 5 {
+		t.Fatalf("插入后光标应在 5, got %d", m.editTitleCursor)
+	}
+
+	// 8. delete 删除光标处字符
+	m, _ = m.handleKey("delete")
+	if m.editTitleBuf != "旧标题aX" {
+		t.Fatalf("delete 应删光标处字符, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 5 {
+		t.Fatalf("delete 后光标应在 5, got %d", m.editTitleCursor)
+	}
+
+	// 9. esc 取消
+	m, _ = m.handleKey("esc")
+	if m.editTitleMode {
+		t.Fatal("esc 应退出编辑模式")
+	}
+	if m.editTitleBuf != "" {
+		t.Fatalf("esc 应清空缓冲, got %q", m.editTitleBuf)
+	}
+	if m.editTitleCursor != 0 {
+		t.Fatalf("esc 应重置光标, got %d", m.editTitleCursor)
+	}
+}
\ No newline at end of file
diff --git a/internal/history.go b/internal/history.go
index 3e633cc..a695cc0 100644
--- a/internal/history.go
+++ b/internal/history.go
@@ -1011,7 +1011,10 @@ func generateAISummary(filePath string) (string, []string, []string) {
 
 要求：summary 30字以内中文标题，突出具体内容避免泛化；completed 已完成工作（每项≤30字）；pending 未完成/待办（每项≤30字）。只输出JSON。` + "\n\n" + messages
 
-	cmd := exec.CommandContext(ctx, "claude", "-p", prompt)
+	// 用 stdin 传 prompt：Windows 上 claude -p 把命令行参数在首个换行处截断，
+	// 导致只收到"分析以下Claude Code对话"前缀、消息内容丢失（历史无意义标题的根因）。
+	cmd := exec.CommandContext(ctx, "claude", "-p", "--input-format", "text")
+	cmd.Stdin = strings.NewReader(prompt)
 
 	output, err := cmd.Output()
 
diff --git a/internal/key.go b/internal/key.go
index 21f658e..348d651 100644
--- a/internal/key.go
+++ b/internal/key.go
@@ -7,7 +7,7 @@ import tea "charm.land/bubbletea/v2"
 func (m *Model) handleKey(s string) (*Model, tea.Cmd) {
 	// 编辑标题时优先走输入处理，避免 q/1/2/u 等被全局拦截
 	if m.editTitleMode {
-		return m.handleHistoryKey(s)
+		return m.handleEditTitleInput(s)
 	}
 
 	switch s {
@@ -20,11 +20,11 @@ func (m *Model) handleKey(s string) (*Model, tea.Cmd) {
 		}
 	}
 
-	// Tab 快捷切换: 1=工作空间 2=历史对话
+	// Tab 快捷切换: 1=工作空间 2=历史对话 3=技能
 	if s == "1" {
 		m.editTitleMode = false
 		m.editTitleBuf = ""
-		if m.IsHistoryTab() {
+		if m.IsHistoryTab() || m.IsSkillsTab() {
 			m.activeGroup = 0
 			m.resetCursor()
 			m.wsFocus = 1
@@ -40,7 +40,19 @@ func (m *Model) handleKey(s string) (*Model, tea.Cmd) {
 		}
 		return m, nil
 	}
+	if s == "3" {
+		if !m.IsSkillsTab() {
+			m.activeGroup = len(Groups) + 1 // SKILLS
+			m.resetCursor()
+			m.wsFocus = 1
+			return m, m.onSkillsTabSwitch()
+		}
+		return m, nil
+	}
 
+	if m.IsSkillsTab() {
+		return m.handleSkillsKey(s)
+	}
 	if m.IsHistoryTab() {
 		return m.handleHistoryKey(s)
 	}
@@ -55,6 +67,140 @@ func (m *Model) onTabSwitch() tea.Cmd {
 	return ScanSessionsCmd()
 }
 
+func (m *Model) onSkillsTabSwitch() tea.Cmd {
+	if m.Skills.Loaded {
+		return nil
+	}
+	m.Skills.Scanning = true
+	return ScanSkillsCmd()
+}
+
+// --- 技能 tab 按键 ---
+
+func (m *Model) handleSkillsKey(s string) (*Model, tea.Cmd) {
+	switch s {
+	case "up", "k":
+		switch m.Skills.FocusPanel {
+		case 0:
+			m.moveSkillsSkill(-1)
+		case 1:
+			m.moveSkillsFile(-1)
+		case 2:
+			m.scrollSkillContent(-1)
+		}
+	case "down", "j":
+		switch m.Skills.FocusPanel {
+		case 0:
+			m.moveSkillsSkill(1)
+		case 1:
+			m.moveSkillsFile(1)
+		case 2:
+			m.scrollSkillContent(1)
+		}
+	case "pgup":
+		if m.Skills.FocusPanel == 2 {
+			m.scrollSkillContent(-10)
+		}
+	case "pgdown":
+		if m.Skills.FocusPanel == 2 {
+			m.scrollSkillContent(10)
+		}
+	case "tab", "right", "l":
+		// 进内容面板需已加载内容
+		if m.Skills.FocusPanel < 1 {
+			m.Skills.FocusPanel = 1
+			m.autoLoadCurrentFile()
+		} else if m.Skills.FocusPanel == 1 && m.Skills.ContentPath != "" {
+			m.Skills.FocusPanel = 2
+		}
+	case "shift+tab", "left", "h":
+		if m.Skills.FocusPanel > 0 {
+			m.Skills.FocusPanel--
+		}
+	case "enter":
+		switch m.Skills.FocusPanel {
+		case 0:
+			m.Skills.FocusPanel = 1
+			m.Skills.FileCur = 0
+			m.autoLoadCurrentFile()
+		case 1:
+			fn := m.currentFlatNode()
+			if fn != nil {
+				if fn.IsDir {
+					fn.Expanded = !fn.Expanded
+					flat := m.skillsFlattened()
+					if m.Skills.FileCur >= len(flat) {
+						m.Skills.FileCur = len(flat) - 1
+					}
+				} else {
+					m.loadSkillContent(fn.Path)
+					m.Skills.FocusPanel = 2 // 打开文件即聚焦内容，便于滚动
+				}
+			}
+		}
+	case "r", "f5":
+		m.Skills.Loaded = false
+		m.Skills.Scanning = true
+		return m, ScanSkillsCmd()
+	}
+	return m, nil
+}
+
+// scrollSkillContent 滚动内容面板，边界由 View 层按实际高度再夹紧
+func (m *Model) scrollSkillContent(dir int) {
+	m.Skills.ContentScroll += dir
+	if m.Skills.ContentScroll < 0 {
+		m.Skills.ContentScroll = 0
+	}
+}
+
+// autoLoadCurrentFile 若当前文件树光标停在文件上，自动加载其内容
+func (m *Model) autoLoadCurrentFile() {
+	if fn := m.currentFlatNode(); fn != nil && !fn.IsDir {
+		m.loadSkillContent(fn.Path)
+	}
+}
+
+func (m *Model) moveSkillsSkill(dir int) {
+	if len(m.Skills.Skills) == 0 {
+		return
+	}
+	m.Skills.SkillCur += dir
+	if m.Skills.SkillCur < 0 {
+		m.Skills.SkillCur = len(m.Skills.Skills) - 1
+	}
+	if m.Skills.SkillCur >= len(m.Skills.Skills) {
+		m.Skills.SkillCur = 0
+	}
+	m.Skills.FileCur = 0
+	m.Skills.Content = ""
+	m.Skills.ContentPath = ""
+}
+
+func (m *Model) moveSkillsFile(dir int) {
+	flat := m.skillsFlattened()
+	if len(flat) == 0 {
+		return
+	}
+	m.Skills.FileCur += dir
+	if m.Skills.FileCur < 0 {
+		m.Skills.FileCur = len(flat) - 1
+	}
+	if m.Skills.FileCur >= len(flat) {
+		m.Skills.FileCur = 0
+	}
+	// 光标移到文件即自动加载内容；目录则清空内容区
+	if fn := m.currentFlatNode(); fn != nil {
+		if fn.IsDir {
+			m.Skills.Content = ""
+			m.Skills.ContentPath = ""
+			m.Skills.ContentScroll = 0
+		} else {
+			m.loadSkillContent(fn.Path)
+		}
+	}
+}
+
 // --- Workspace 按键 ---
 
 func (m *Model) handleWorkspaceKey(s string) (*Model, tea.Cmd) {
@@ -86,11 +232,16 @@ func (m *Model) handleWorkspaceKey(s string) (*Model, tea.Cmd) {
 			return m.launchByInput()
 		}
 		if m.wsFocus == 0 {
-			if m.wsTabCur >= len(Groups) {
+			if m.wsTabCur == len(Groups) {
 				m.activeGroup = len(Groups)
 				m.resetCursor()
 				return m, m.onTabSwitch()
 			}
+			if m.wsTabCur == len(Groups)+1 {
+				m.activeGroup = len(Groups) + 1
+				m.resetCursor()
+				return m, m.onSkillsTabSwitch()
+			}
 			m.activeGroup = m.wsTabCur
 			m.wsFocus = 1
 		} else {
@@ -110,7 +261,7 @@ func (m *Model) resetCursor() {
 }
 
 func (m *Model) moveGroupCursor(dir int) {
-	total := len(Groups) + 1 // 含历史入口
+	total := len(Groups) + 2 // 含历史对话入口和技能入口
 	m.wsTabCur = (m.wsTabCur + dir + total) % total
 	if m.wsTabCur < len(Groups) {
 		m.activeGroup = m.wsTabCur
@@ -174,7 +325,8 @@ func (m *Model) handleHistoryKey(s string) (*Model, tea.Cmd) {
 			s := m.currentSession()
 			m.editTitleMode = true
 			m.editTitleBuf = s.DisplayTitle()
-			m.history.FocusPanel = 1 // 确保右栏可见
+			m.editTitleCursor = len([]rune(m.editTitleBuf))
+			m.history.FocusPanel = 1
 		}
 	case "c":
 		if m.currentSession() != nil && m.history.FocusPanel == 1 {
@@ -192,25 +344,85 @@ func (m *Model) handleEditTitleInput(s string) (*Model, tea.Cmd) {
 	case "esc":
 		m.editTitleMode = false
 		m.editTitleBuf = ""
+		m.editTitleCursor = 0
 	case "backspace":
-		r := []rune(m.editTitleBuf)
-		if len(r) > 0 {
-			m.editTitleBuf = string(r[:len(r)-1])
+		m.backspaceTitle()
+	case "delete":
+		m.deleteTitleChar()
+	case "left", "h":
+		if m.editTitleCursor > 0 {
+			m.editTitleCursor--
 		}
+	case "right", "l":
+		r := []rune(m.editTitleBuf)
+		if m.editTitleCursor < len(r) {
+			m.editTitleCursor++
+		}
+	case "home", "ctrl+a":
+		m.editTitleCursor = 0
+	case "end", "ctrl+e":
+		m.editTitleCursor = len([]rune(m.editTitleBuf))
+	case "space":
+		m.insertTitleRune(' ')
 	default:
-		// 编辑状态下忽略导航/功能键，避免 up/down/tab 等被当作字符输入
 		switch s {
-		case "up", "down", "left", "right", "tab", "shift+tab":
-			// 不处理
+		case "up", "down", "tab", "shift+tab":
 		default:
-			if s != "" && s[0] >= 32 {
-				m.editTitleBuf += s
+			if len(s) == 1 && s[0] >= 32 {
+				m.insertTitleRune(rune(s[0]))
+			} else if len(s) > 1 {
+				m.insertTitleString(s)
 			}
 		}
 	}
 	return m, nil
 }
 
+func (m *Model) insertTitleRune(r rune) {
+	buf := []rune(m.editTitleBuf)
+	pos := m.editTitleCursor
+	if pos > len(buf) {
+		pos = len(buf)
+	}
+	buf = append(buf[:pos], append([]rune{r}, buf[pos:]...)...)
+	m.editTitleBuf = string(buf)
+	m.editTitleCursor = pos + 1
+}
+
+func (m *Model) insertTitleString(s string) {
+	buf := []rune(m.editTitleBuf)
+	pos := m.editTitleCursor
+	if pos > len(buf) {
+		pos = len(buf)
+	}
+	ins := []rune(s)
+	buf = append(buf[:pos], append(ins, buf[pos:]...)...)
+	m.editTitleBuf = string(buf)
+	m.editTitleCursor = pos + len(ins)
+}
+
+func (m *Model) backspaceTitle() {
+	buf := []rune(m.editTitleBuf)
+	if m.editTitleCursor > 0 && len(buf) > 0 {
+		pos := m.editTitleCursor - 1
+		if pos > len(buf) {
+			pos = len(buf) - 1
+		}
+		buf = append(buf[:pos], buf[pos+1:]...)
+		m.editTitleBuf = string(buf)
+		m.editTitleCursor--
+	}
+}
+
+func (m *Model) deleteTitleChar() {
+	buf := []rune(m.editTitleBuf)
+	pos := m.editTitleCursor
+	if len(buf) > 0 && pos < len(buf) {
+		buf = append(buf[:pos], buf[pos+1:]...)
+		m.editTitleBuf = string(buf)
+	}
+}
+
 func (m *Model) handleForkInput(s string) (*Model, tea.Cmd) {
 	switch s {
 	case "enter":
@@ -225,6 +437,8 @@ func (m *Model) handleForkInput(s string) (*Model, tea.Cmd) {
 	default:
 		if len(s) == 1 && s[0] >= 32 && s[0] < 127 {
 			m.forkBuf += s
+		} else if len(s) > 1 {
+			m.forkBuf += s
 		}
 	}
 	return m, nil
diff --git a/internal/rename_persist_test.go b/internal/rename_persist_test.go
new file mode 100644
index 0000000..6d95b0b
--- /dev/null
+++ b/internal/rename_persist_test.go
@@ -0,0 +1,55 @@
+package internal
+
+import (
+	"testing"
+
+	tea "charm.land/bubbletea/v2"
+)
+
+// TestRenameSurvivesStaleScan 验证改名持久化竞态：
+// 改名后内存缓存已设 UserTitle 但尚未落盘（3s 延迟），
+// 此时若触发扫描（切 tab/刷新），ScanCompleteMsg 会用磁盘旧缓存
+// （不含新标题）覆盖内存，导致改名丢失。
+func TestRenameSurvivesStaleScan(t *testing.T) {
+	m := NewModel()
+	m.history.Projects = []*ProjectDir{
+		{DirShort: "test", Sessions: []*Session{
+			{ID: "s1", AISummary: "原标题", UserTitle: "我的新名"},
+		}},
+	}
+	// 内存缓存：改名已写入但尚未落盘
+	m.history.Cache = map[string]*cacheEntry{
+		"s1": {UserTitle: "我的新名"},
+	}
+	m.history.Favorites = map[string]bool{} // 跳过 loadFavorites 文件读取
+	m.cacheDirty = true
+
+	// 现在用户改名后 3 秒内按了 "2"/"r" 触发扫描：
+	// 扫描从磁盘读到旧缓存（不含 UserTitle），返回的 msg 也无 UserTitle
+	staleProjects := []*ProjectDir{
+		{DirShort: "test", Sessions: []*Session{
+			{ID: "s1", AISummary: "原标题"},
+		}},
+	}
+	staleCache := map[string]*cacheEntry{
+		"s1": {UserTitle: ""},
+	}
+	var cmd tea.Cmd
+	model, _ := m.Update(ScanCompleteMsg{
+		Projects: staleProjects,
+		Cache:    staleCache,
+	})
+	_ = model
+	_ = cmd
+
+	// 改名应存活：内存缓存的 UserTitle 不应被磁盘旧缓存清掉
+	got := m.history.Cache["s1"].UserTitle
+	if got != "我的新名" {
+		t.Fatalf("扫描后改名丢失: cache UserTitle = %q, 期望 \"我的新名\"", got)
+	}
+	// session 的 UserTitle 也应保留
+	s := m.history.Projects[0].Sessions[0]
+	if s.UserTitle != "我的新名" {
+		t.Fatalf("扫描后 session UserTitle 丢失: = %q, 期望 \"我的新名\"", s.UserTitle)
+	}
+}
diff --git a/internal/skills.go b/internal/skills.go
new file mode 100644
index 0000000..125007e
--- /dev/null
+++ b/internal/skills.go
@@ -0,0 +1,249 @@
+package internal
+
+import (
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	tea "charm.land/bubbletea/v2"
+)
+
+// ScanSkillsCompleteMsg 技能扫描完成消息
+type ScanSkillsCompleteMsg struct {
+	Skills []*SkillInfo
+}
+
+// ScanSkillsCmd 扫描 ~/.claude/skills/ 目录
+func ScanSkillsCmd() tea.Cmd {
+	return func() tea.Msg {
+		skills, err := ScanSkills()
+		if err != nil {
+			return ScanSkillsCompleteMsg{}
+		}
+		return ScanSkillsCompleteMsg{Skills: skills}
+	}
+}
+
+// SkillInfo 单个技能信息
+type SkillInfo struct {
+	Name        string
+	Dir         string
+	Description string
+	Root        *SkillFileNode
+}
+
+// SkillFileNode 技能文件树节点
+type SkillFileNode struct {
+	Name     string
+	Path     string
+	IsDir    bool
+	Expanded bool
+	Children []*SkillFileNode
+}
+
+// SkillsState 技能 tab 视图状态
+type SkillsState struct {
+	Skills        []*SkillInfo
+	SkillCur      int // 技能列表光标 (panel 0)
+	FileCur       int // 文件树光标 (panel 1)
+	FocusPanel    int // 0=技能列表 1=文件树 2=内容
+	Content       string
+	ContentPath   string
+	ContentScroll int // 内容面板纵向滚动偏移（行）
+	Loaded        bool
+	Scanning      bool
+}
+
+// flatNode 文件树扁平化节点
+type flatNode struct {
+	*SkillFileNode
+	Depth int
+}
+
+// ScanSkills 扫描 ~/.claude/skills/ 目录
+func ScanSkills() ([]*SkillInfo, error) {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return nil, err
+	}
+	skillsDir := filepath.Join(home, ".claude", "skills")
+	return scanSkillsDir(skillsDir)
+}
+
+func scanSkillsDir(dir string) ([]*SkillInfo, error) {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return nil, err
+	}
+	var skills []*SkillInfo
+	for _, entry := range entries {
+		if !entry.IsDir() {
+			continue
+		}
+		name := entry.Name()
+		if strings.HasPrefix(name, ".") {
+			continue
+		}
+		skillPath := filepath.Join(dir, name)
+		info := &SkillInfo{
+			Name: name,
+			Dir:  skillPath,
+		}
+		// 读取 SKILL.md 获取描述
+		skillMd := filepath.Join(skillPath, "SKILL.md")
+		if data, err := os.ReadFile(skillMd); err == nil {
+			info.Description = extractSkillDesc(string(data))
+		}
+		// 构建文件树
+		info.Root = buildFileTree(skillPath)
+		if info.Root != nil {
+			info.Root.Expanded = true // 默认展开根节点
+		}
+		skills = append(skills, info)
+	}
+	sort.Slice(skills, func(i, j int) bool {
+		return skills[i].Name < skills[j].Name
+	})
+	return skills, nil
+}
+
+// extractSkillDesc 从 SKILL.md 提取描述文本
+func extractSkillDesc(content string) string {
+	lines := strings.Split(content, "\n")
+	afterHeading := false
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if strings.HasPrefix(line, "#") {
+			afterHeading = true
+			continue
+		}
+		// 跳过分隔线、引言、元数据
+		if strings.HasPrefix(line, "---") || strings.HasPrefix(line, ">") ||
+			strings.HasPrefix(line, "##") || strings.HasPrefix(line, "|") ||
+			strings.HasPrefix(line, "```") || strings.HasPrefix(line, "<!--") {
+			continue
+		}
+		if afterHeading && line != "" {
+			return truncStr(line, 80)
+		}
+	}
+	return ""
+}
+
+// buildFileTree 递归构建文件树
+func buildFileTree(rootPath string) *SkillFileNode {
+	info, err := os.Stat(rootPath)
+	if err != nil {
+		return nil
+	}
+	node := &SkillFileNode{
+		Name:  filepath.Base(rootPath),
+		Path:  rootPath,
+		IsDir: info.IsDir(),
+	}
+	if !info.IsDir() {
+		return node
+	}
+	entries, err := os.ReadDir(rootPath)
+	if err != nil {
+		return node
+	}
+	for _, entry := range entries {
+		name := entry.Name()
+		if strings.HasPrefix(name, ".") {
+			continue
+		}
+		child := buildFileTree(filepath.Join(rootPath, name))
+		if child != nil {
+			node.Children = append(node.Children, child)
+		}
+	}
+	// 排序：目录在前，文件在后；同类型按字母序
+	sort.Slice(node.Children, func(i, j int) bool {
+		if node.Children[i].IsDir != node.Children[j].IsDir {
+			return node.Children[i].IsDir
+		}
+		return node.Children[i].Name < node.Children[j].Name
+	})
+	return node
+}
+
+// --- 文件树扁平化 ---
+
+func (m *Model) skillsFlattened() []flatNode {
+	s := m.currentSkill()
+	if s == nil || s.Root == nil {
+		return nil
+	}
+	return flattenNode(s.Root, 0)
+}
+
+func flattenNode(node *SkillFileNode, depth int) []flatNode {
+	var result []flatNode
+	result = append(result, flatNode{SkillFileNode: node, Depth: depth})
+	if node.IsDir && node.Expanded {
+		for _, child := range node.Children {
+			result = append(result, flattenNode(child, depth+1)...)
+		}
+	}
+	return result
+}
+
+// --- 查找与导航 ---
+
+func (m *Model) currentSkill() *SkillInfo {
+	if m.Skills.Skills == nil || m.Skills.SkillCur < 0 || m.Skills.SkillCur >= len(m.Skills.Skills) {
+		return nil
+	}
+	return m.Skills.Skills[m.Skills.SkillCur]
+}
+
+func (m *Model) currentFlatNode() *flatNode {
+	flat := m.skillsFlattened()
+	if flat == nil || m.Skills.FileCur < 0 || m.Skills.FileCur >= len(flat) {
+		return nil
+	}
+	return &flat[m.Skills.FileCur]
+}
+
+// loadSkillContent 加载文件内容到右侧面板
+func (m *Model) loadSkillContent(path string) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		m.Skills.Content = "无法读取文件"
+		m.Skills.ContentPath = path
+		return
+	}
+	content := string(data)
+	// 限制内容大小，避免大文件卡顿
+	if len(content) > 100*1024 {
+		content = content[:100*1024] + "\n\n... (文件过大，截断显示)"
+	}
+	m.Skills.Content = content
+	m.Skills.ContentPath = path
+	m.Skills.ContentScroll = 0
+}
+
+// IsSkillsTab 判断当前是否在技能 tab
+func (m *Model) IsSkillsTab() bool {
+	return m.activeGroup == len(Groups)+1
+}
+
+// --- 文件树节点操作 ---
+
+// findNodeByPath 在树中按路径查找节点
+func findNodeByPath(root *SkillFileNode, path string) *SkillFileNode {
+	if root == nil {
+		return nil
+	}
+	if root.Path == path {
+		return root
+	}
+	for _, child := range root.Children {
+		if found := findNodeByPath(child, path); found != nil {
+			return found
+		}
+	}
+	return nil
+}
diff --git a/internal/update.go b/internal/update.go
index 340363c..91fe8b8 100644
--- a/internal/update.go
+++ b/internal/update.go
@@ -14,7 +14,7 @@ import (
 )
 
 // Version 当前版本，发布时更新
-const Version = "0.2.3"
+const Version = "0.2.4"
 
 // --- 远程 JSON 结构 ---
 
diff --git a/internal/view.go b/internal/view.go
index c996072..cfcc2e9 100644
--- a/internal/view.go
+++ b/internal/view.go
@@ -34,6 +34,8 @@ func (m *Model) render() string {
 
 	if m.IsHistoryTab() {
 		b.WriteString(m.renderHistory())
+	} else if m.IsSkillsTab() {
+		b.WriteString(m.renderSkills())
 	} else {
 		b.WriteString(m.renderWorkspace())
 	}
@@ -102,10 +104,30 @@ func (m *Model) renderTabBar() string {
 		b.WriteString(style.TabInactiveStyle.Render(histLabel))
 	}
 
+	b.WriteString(sep)
+	skillsLabel := " 3 技能 "
+	if m.IsSkillsTab() {
+		b.WriteString(style.TabActiveAccent.Render(skillsLabel))
+	} else {
+		b.WriteString(style.TabInactiveStyle.Render(skillsLabel))
+	}
+
 	return b.String()
 }
 
 func (m *Model) renderHelp() []string {
+	if m.IsSkillsTab() {
+		return []string{
+			m.fmtHelp("↑↓", "sel"),
+			m.fmtHelp("←→", "panel"),
+			m.fmtHelp("Enter", "expand/view"),
+			m.fmtHelp("1", "workspace"),
+			m.fmtHelp("2", "history"),
+			m.fmtHelp("3", "skills"),
+			m.fmtHelp("r/F5", "refresh"),
+			m.fmtHelp("q", "quit"),
+		}
+	}
 	if m.IsHistoryTab() {
 		return []string{
 			m.fmtHelp("↑↓", "sel"),
@@ -125,6 +147,7 @@ func (m *Model) renderHelp() []string {
 		m.fmtHelp("↑↓", "sel"),
 		m.fmtHelp("Enter", "run"),
 		m.fmtHelp("2", "history"),
+		m.fmtHelp("3", "skills"),
 		m.fmtHelp("q", "quit"),
 	}
 }
diff --git a/internal/view_hist.go b/internal/view_hist.go
index 6ca7380..4254b4e 100644
--- a/internal/view_hist.go
+++ b/internal/view_hist.go
@@ -200,10 +200,53 @@ func (m *Model) detailColumnLines(w, listH int) []string {
 	}
 	// 标题行：编辑模式显示输入框，否则显示普通标题
 	if m.editTitleMode {
-		editLine := "  ✏ " + m.editTitleBuf
-		editW := w - 4
-		if lipgloss.Width(editLine) > editW {
-			editLine = truncateByWidth(editLine, editW-2) + "…"
+		prefix := "  ✏ "
+		prefixW := stringWidth(prefix)
+		contentW := w - prefixW // 内容区可用宽度
+		text := m.editTitleBuf
+		textRunes := []rune(text)
+		cursor := m.editTitleCursor
+		if cursor > len(textRunes) {
+			cursor = len(textRunes)
+		}
+
+		// 计算可见窗口 [start, end)：文本超宽时以光标为中心滚动，保证光标可见
+		start, end := 0, len(textRunes)
+		if stringWidth(text) > contentW && contentW > 0 {
+			halfW := contentW / 2
+			start = cursor
+			acc := 0
+			for start > 0 && acc < halfW {
+				start--
+				acc += runeWidth(textRunes[start])
+			}
+			end = start
+			acc = 0
+			for end < len(textRunes) {
+				rw := runeWidth(textRunes[end])
+				if acc+rw > contentW {
+					break
+				}
+				acc += rw
+				end++
+			}
+			for cursor >= end && end > start {
+				start++
+				end++
+			}
+		}
+
+		// 将 ▏ 光标嵌入到文本中（同一行），不单独占一行
+		visible := string(textRunes[start:end])
+		relCursor := cursor - start
+		var editLine string
+		vr := []rune(visible)
+		if relCursor <= 0 {
+			editLine = prefix + "▏" + visible
+		} else if relCursor >= len(vr) {
+			editLine = prefix + visible + "▏"
+		} else {
+			editLine = prefix + string(vr[:relCursor]) + "▏" + string(vr[relCursor:])
 		}
 		lines = append(lines, style.InputStyle.Render(fitWidth(editLine, w)))
 		lines = append(lines, style.DimFg.Render(fitWidth("  [Enter]save [Esc]cancel", w)))
diff --git a/internal/view_skills.go b/internal/view_skills.go
new file mode 100644
index 0000000..afa2a98
--- /dev/null
+++ b/internal/view_skills.go
@@ -0,0 +1,157 @@
+package internal
+
+import (
+	"fmt"
+	"strings"
+
+	"charm.land/lipgloss/v2"
+	"u-tabs/internal/style"
+)
+
+// --- 技能 tab 三栏渲染 ---
+
+func (m *Model) renderSkills() string {
+	if !m.Skills.Loaded && !m.Skills.Scanning {
+		return style.ScanningStyle.Render("  press Tab to load skills...")
+	}
+	if m.Skills.Scanning {
+		return style.ScanningStyle.Render("  scanning skills...")
+	}
+	if len(m.Skills.Skills) == 0 {
+		return style.SubtitleStyle.Render("  no skills found in ~/.claude/skills/")
+	}
+
+	avail := m.width - 8
+	skillW := max(18, avail*20/100)
+	fileW := max(22, avail*28/100)
+	contentW := avail - skillW - fileW
+	listH := max(3, m.height-7)
+
+	skillCw := skillW - 2
+	fileCw := fileW - 2
+	contentCw := contentW - 2
+
+	skillLines := m.skillsListLines(skillCw, listH-1)
+	fileLines := m.skillsFileLines(fileCw, listH-1)
+	contentLines := m.skillsContentLines(contentCw, listH-1)
+
+	maxRows := min(listH-1, max(max(len(skillLines), len(fileLines)), len(contentLines)))
+
+	panelSty := lipgloss.NewStyle().
+		Border(lipgloss.RoundedBorder()).
+		BorderForeground(style.BgPanel)
+
+	skillBorderFg := style.BgPanel
+	if m.Skills.FocusPanel == 0 {
+		skillBorderFg = style.Accent
+	}
+	fileBorderFg := style.BgPanel
+	if m.Skills.FocusPanel == 1 {
+		fileBorderFg = style.Accent
+	}
+
+	skillBox := panelSty.BorderForeground(skillBorderFg).Width(skillW).Render(
+		style.DetailTitle.Render("skills") + "\n" + padLinesTo(skillLines, skillCw, maxRows))
+	fileBox := panelSty.BorderForeground(fileBorderFg).Width(fileW).Render(
+		style.DetailTitle.Render("files") + "\n" + padLinesTo(fileLines, fileCw, maxRows))
+	contentBox := panelSty.BorderForeground(style.BgPanel).Width(contentW).Render(
+		style.DetailTitle.Render("content") + "\n" + padLinesTo(contentLines, contentCw, maxRows))
+
+	return lipgloss.JoinHorizontal(lipgloss.Top, skillBox, " ", fileBox, " ", contentBox)
+}
+
+func (m *Model) skillsListLines(w, listH int) []string {
+	skills := m.Skills.Skills
+	if len(skills) == 0 {
+		return []string{style.DimFg.Render(fitWidth("  empty", w))}
+	}
+	start, end := viewport(m.Skills.SkillCur, len(skills), listH)
+	var lines []string
+	for i := start; i < end; i++ {
+		sk := skills[i]
+		cur := " "
+		if i == m.Skills.SkillCur {
+			cur = "▸"
+		}
+		line := fmt.Sprintf(" %s %s", cur, sk.Name)
+		sty := style.NormStyle
+		if i == m.Skills.SkillCur && m.Skills.FocusPanel == 0 {
+			sty = style.SelStyle
+		}
+		lines = append(lines, sty.Render(padRightByWidth(truncateByWidth(line, w), w)))
+		// 如果有描述，追加一行
+		if sk.Description != "" {
+			descLine := "   " + sk.Description
+			descSty := style.DimFg
+			if i == m.Skills.SkillCur && m.Skills.FocusPanel == 0 {
+				descSty = style.SelStyle
+			}
+			lines = append(lines, descSty.Render(padRightByWidth(truncateByWidth(descLine, w), w)))
+		}
+	}
+	return lines
+}
+
+func (m *Model) skillsFileLines(w, listH int) []string {
+	flat := m.skillsFlattened()
+	if len(flat) == 0 {
+		return []string{style.DimFg.Render(fitWidth("  ← select skill", w))}
+	}
+	start, end := viewport(m.Skills.FileCur, len(flat), listH)
+	var lines []string
+	for i := start; i < end; i++ {
+		fn := flat[i]
+		indent := strings.Repeat("  ", fn.Depth)
+		cur := " "
+		if i == m.Skills.FileCur {
+			cur = "▸"
+		}
+		prefix := "  "
+		if fn.IsDir {
+			if fn.Expanded {
+				prefix = "▾ "
+			} else {
+				prefix = "▸ "
+			}
+		}
+		display := indent + cur + prefix + fn.Name
+		sty := style.NormStyle
+		if fn.IsDir {
+			sty = style.AccentFg
+		}
+		if i == m.Skills.FileCur && m.Skills.FocusPanel == 1 {
+			sty = style.SelStyle
+		}
+		lines = append(lines, sty.Render(padRightByWidth(truncateByWidth(display, w), w)))
+	}
+	return lines
+}
+
+func (m *Model) skillsContentLines(w, listH int) []string {
+	if m.Skills.ContentPath == "" {
+		return []string{style.DimFg.Render(fitWidth("  ← select file to view", w))}
+	}
+	header := style.DetailTitle.Render(fitWidth(" "+m.Skills.ContentPath, w))
+	sep := style.SepFg.Render(fitWidth(sepRunes(w), w))
+
+	var lines []string
+	lines = append(lines, header)
+	lines = append(lines, sep)
+
+	contentLines := strings.Split(m.Skills.Content, "\n")
+	// 内容面板保留标题和分隔线，其余行按滚动偏移显示
+	maxLines := max(0, listH-2)
+	start := m.Skills.ContentScroll
+	if start > len(contentLines) {
+		start = len(contentLines)
+	}
+	end := min(len(contentLines), start+maxLines)
+	for _, line := range contentLines[start:end] {
+		lines = append(lines, style.NormStyle.Render(fitWidth(line, w)))
+	}
+	// 滚动到末尾时自动回收偏移，避免窗口缩小时空白
+	if maxLines > 0 && m.Skills.ContentScroll > max(0, len(contentLines)-maxLines) {
+		m.Skills.ContentScroll = max(0, len(contentLines)-maxLines)
+	}
+	return lines
+}
diff --git a/internal/view_ws.go b/internal/view_ws.go
index 702efa6..9051058 100644
--- a/internal/view_ws.go
+++ b/internal/view_ws.go
@@ -56,7 +56,7 @@ func (m *Model) renderWorkspace() string {
 
 func (m *Model) tabsColumnLines(w, listH int) []string {
 	var lines []string
-	total := len(Groups) + 1
+	total := len(Groups) + 2 // groups + 历史对话 + 技能
 	start, end := viewport(m.wsTabCur, total, listH)
 
 	focused := m.wsFocus == 0
@@ -66,6 +66,10 @@ func (m *Model) tabsColumnLines(w, listH int) []string {
 			renderNavEntry(&lines, w, "历史对话", "#7dcfff", m.wsTabCur == i, focused)
 			continue
 		}
+		if i == len(Groups)+1 {
+			renderNavEntry(&lines, w, "技能", "#7aa2f7", m.wsTabCur == i, focused)
+			continue
+		}
 
 		g := Groups[i]
 		label := g.Label