feat: SFTP rename files and directories

- M key enters rename mode with current name pre-filled
- Type new name, Enter to confirm, Esc to cancel
- renameItem: client.Rename() for remote, os.Rename() for local
- Clear cache + refresh after rename
- Footer updated: M:rename
- Filter mode allows M to pass through

CHANGELOG.md

@@ -67,6 +67,14 @@
 - Delete: clear cache + trigger re-render after file removal
 - Mkdir: clear cache + trigger re-render after directory creation
 
+### SFTP Rename Feature
+- Added `M` key to rename files and directories
+- Rename mode: shows input with current name, type new name, Enter to confirm
+- Works on both Local and Remote panes
+- Clears cache and refreshes after rename
+- Footer updated: `M:rename` added
+- Filter mode allows `M` to pass through
+
 ## v1.0.0 (2025-01-30)
 
 ### Added

pkg/tui/sftp_browser_tab.go

@@ -38,6 +38,9 @@ type sftpPane struct {
 	filterMode bool
 	filter     string
 
+	renameMode bool
+	renameInput string
+
 	// Directory listing cache: path → entries
 	dirCache map[string][]os.FileInfo
 
@@ -295,7 +298,7 @@ func (t *SFTPBrowserTab) Update(msg tea.Msg) (Tab, tea.Cmd) {
 				return t, nil
 			case "tab", "up", "k", "down", "j":
 				// Allow navigation and pane switch in filter mode
-			case "c", "d", "n", "r":
+			case "c", "d", "m", "n", "r":
 				// Allow commands in filter mode
 			default:
 				if len(msg.Runes) == 1 {
@@ -305,6 +308,43 @@ func (t *SFTPBrowserTab) Update(msg tea.Msg) (Tab, tea.Cmd) {
 			}
 		}
 
+		if p.renameMode {
+			switch msg.String() {
+			case "esc":
+				p.renameMode = false
+				p.renameInput = ""
+				return t, nil
+			case "enter":
+				if p.renameInput != "" {
+					t.mu.Lock()
+					entries := p.entries
+					idx := p.selIdx
+					cwd := p.cwd
+					isRemote := t.active == paneRemote
+					t.mu.Unlock()
+
+					if idx >= 0 && idx < len(entries) {
+						oldPath := path.Join(cwd, entries[idx].Name())
+						newPath := path.Join(cwd, p.renameInput)
+						go t.renameItem(oldPath, newPath, isRemote)
+					}
+				}
+				p.renameMode = false
+				p.renameInput = ""
+				return t, nil
+			case "backspace":
+				if len(p.renameInput) > 0 {
+					p.renameInput = p.renameInput[:len(p.renameInput)-1]
+				}
+				return t, nil
+			default:
+				if len(msg.Runes) == 1 {
+					p.renameInput += string(msg.Runes[0])
+				}
+				return t, nil
+			}
+		}
+
 		switch msg.String() {
 		case "tab":
 			t.mu.Lock()
@@ -424,6 +464,16 @@ func (t *SFTPBrowserTab) Update(msg tea.Msg) (Tab, tea.Cmd) {
 				go t.mkdirRemote()
 			}
 
+		case "m":
+			t.mu.Lock()
+			entries := p.entries
+			idx := p.selIdx
+			t.mu.Unlock()
+			if idx >= 0 && idx < len(entries) {
+				p.renameMode = true
+				p.renameInput = entries[idx].Name()
+			}
+
 		case "esc":
 			return t, func() tea.Msg { return closeFormMsg{} }
 
@@ -669,6 +719,53 @@ func (t *SFTPBrowserTab) mkdirRemote() {
 	}
 }
 
+func (t *SFTPBrowserTab) renameItem(oldPath, newPath string, isRemote bool) {
+	t.mu.Lock()
+	t.transferring = true
+	t.transferMsg = fmt.Sprintf("Renaming %s → %s...", filepath.Base(oldPath), filepath.Base(newPath))
+	t.mu.Unlock()
+
+	var err error
+	if isRemote {
+		t.mu.Lock()
+		client := t.right.sftpClient
+		t.mu.Unlock()
+		if client != nil {
+			err = client.Rename(oldPath, newPath)
+		}
+	} else {
+		err = os.Rename(oldPath, newPath)
+	}
+
+	t.mu.Lock()
+	if err != nil {
+		t.err = fmt.Errorf("rename: %w", err)
+	}
+	t.transferring = false
+	t.transferMsg = ""
+	t.mu.Unlock()
+
+	// Clear cache and refresh
+	t.mu.Lock()
+	if isRemote {
+		delete(t.right.dirCache, t.right.cwd)
+	} else {
+		delete(t.left.dirCache, t.left.cwd)
+	}
+	t.mu.Unlock()
+
+	if isRemote {
+		t.refreshRemote()
+	} else {
+		t.refreshLocal()
+	}
+
+	// Trigger re-render
+	if t.program != nil {
+		t.program.Send(sftpRefreshMsg{})
+	}
+}
+
 func (t *SFTPBrowserTab) View() string {
 	t.mu.Lock()
 	defer t.mu.Unlock()
@@ -764,7 +861,7 @@ func (t *SFTPBrowserTab) View() string {
 	}
 
 	// Footer (wrapped to terminal width)
-	footerText := "Ctrl+Tab:switch  Ctrl+Q:close  Tab:pane  ↑↓:nav  Enter/→:open  ←/Backspace:up  /:filter  C:transfer  D:delete  N:mkdir  R:refresh  Esc:close"
+	footerText := "Ctrl+Tab:switch  Ctrl+Q:close  Tab:pane  ↑↓:nav  Enter/→:open  ←/Backspace:up  /:filter  C:transfer  D:delete  M:rename  N:mkdir  R:refresh  Esc:close"
 	footerWrapped := wrapFooter(footerText, t.width)
 	for _, line := range strings.Split(footerWrapped, "\n") {
 		b.WriteString("\n" + lipgloss.PlaceHorizontal(t.width, lipgloss.Center, SubtitleStyle.Render(line)))
@@ -882,6 +979,14 @@ func (t *SFTPBrowserTab) renderPane(p *sftpPane, pt paneType, maxW, maxH int) st
 		content.WriteString("\n" + SubtitleStyle.Render(filterLine))
 	}
 
+	if p.renameMode {
+		renameLine := "Rename: " + p.renameInput + "_"
+		if lipgloss.Width(renameLine) > innerW {
+			renameLine = truncateStr(renameLine, innerW)
+		}
+		content.WriteString("\n" + SubtitleStyle.Render(renameLine))
+	}
+
 	inner := titleBar + "\n" + content.String()
 	return paneStyle.Width(maxW).Height(maxH).Render(inner)
 }