fix: SFTP stacked mode — render only active pane + indicator bar

Stacked mode (<50 cols) now shows only the active pane (Local/Remote)
with a visual indicator bar. Tab switches between panes. Side-by-side
mode (>=50 cols) unchanged.

CHANGELOG.md

@@ -27,6 +27,12 @@
 - Fixed: key_list_tab & snippet_list_tab were dropping last data row (off-by-one in `rows[:len(rows)-1]`)
 - Fixed: SFTP pane width — lipgloss `Width(n)` renders `n+2` chars (border extra). halfW now `t.width/2-2` to compensate. File names truncate to `…` within inner text area. Filter line also truncated.
 - Verified: zero overflow at 80, 60, 50 (side-by-side), 40, 30 cols (stacked)
+
+### SFTP Stacked Mode Fix (Done)
+- Stacked mode (<50 cols) now renders only the active pane (Local or Remote)
+- Added pane indicator bar: `[Local]  Remote` with active pane highlighted
+- Side-by-side mode (≥50 cols) unchanged — both panes remain visible
+- Tab key now visually switches between panes on narrow terminals
 - Breakpoints: compact (<60), medium (60–100), wide (≥100)
 
 ## v1.0.0 (2025-01-30)

PROJECT_STATE.md

@@ -63,22 +63,12 @@
 ✅ Fixed bug: key_list_tab.go & snippet_list_tab.go dropped last row (`rows[:len(rows)-1]` excluded real data)
 ✅ Breakpoints: compact (<60 cols / mobile), medium (60–100 / tablet), wide (≥100 / desktop)
 
-### Next: SFTP Stacked Mode Fix
-⏳ **File**: `pkg/tui/sftp_browser_tab.go`
-⏳ **Masalah**: Stacked mode (<50 cols) render 2 pane vertikal, masing-masing
-   `t.height-6` entries. Total 2x tinggi terminal. Pane kedua menutupi pane pertama.
-   Tab switch bekerja tapi tidak terlihat karena cuma 1 pane visible.
-⏳ **Solusi**:
-   - Stacked mode: render cuma ACTIVE pane (bukan 2 pane)
-   - Tambah pane indicator bar: `[Local]  Remote` (active disorot hijau)
-   - Side-by-side mode (>=50 cols): TIDAK DIUBAH, tetap 2 pane
-⏳ **Detail implementasi**:
-   1. Di `View()`, ganti blok `if t.width < 50`:
-      - Render cuma `t.renderPane(activePane, paneW)` bukan keduanya
-      - Tambah indicator bar sebelum pane: active pane disorot `StatusBarStyle`, inactive `SubtitleStyle`
-   2. `maxDisplay` tidak perlu diubah (cuma 1 pane, full height)
-   3. Footer tetap sama (sudah wrapped)
-⏳ **Prioritas**: HIGH
+### Done: SFTP Stacked Mode Fix
+✅ **File**: `pkg/tui/sftp_browser_tab.go`
+✅ Stacked mode (<50 cols): render cuma ACTIVE pane (bukan 2 pane)
+✅ Pane indicator bar: `[Local]  Remote` — active disorot hijau (StatusBarStyle)
+✅ Side-by-side mode (>=50 cols): tidak diubah, tetap 2 pane
+✅ `maxDisplay` tidak diubah (cuma 1 pane, full height)
 
 ---
 

pkg/tui/sftp_browser_tab.go

@@ -543,14 +543,33 @@ func (t *SFTPBrowserTab) View() string {
 	// Responsive pane layout: stack vertically on narrow terminals
 	// Each pane renders at maxW+2 total (maxW content + 2 border chars)
 	var leftView, rightView string
+	var indicator string
 	if t.width < 50 {
-		// Stack vertically — each pane gets full width minus border
+		// Only show active pane in stacked mode — Tab switches between them
 		paneW := t.width - 2
 		if paneW < 20 {
 			paneW = 20
 		}
-		leftView = t.renderPane(&t.left, paneLocal, paneW)
-		rightView = t.renderPane(&t.right, paneRemote, paneW)
+		// Pane indicator: [Local]  Remote  or  Local  [Remote]
+		var indicatorParts []string
+		for _, name := range []string{"Local", "Remote"} {
+			pt := paneLocal
+			if name == "Remote" {
+				pt = paneRemote
+			}
+			if t.active == pt {
+				indicatorParts = append(indicatorParts, StatusBarStyle.Render(" "+name+" "))
+			} else {
+				indicatorParts = append(indicatorParts, SubtitleStyle.Render(" "+name+" "))
+			}
+		}
+		indicator = lipgloss.JoinHorizontal(lipgloss.Top, indicatorParts[0], SubtitleStyle.Render(" "), indicatorParts[1])
+
+		if t.active == paneLocal {
+			leftView = t.renderPane(&t.left, paneLocal, paneW)
+		} else {
+			leftView = t.renderPane(&t.right, paneRemote, paneW)
+		}
 	} else {
 		// Side by side — reserve 2 chars border per pane
 		halfW := t.width/2 - 2
@@ -568,7 +587,9 @@ func (t *SFTPBrowserTab) View() string {
 	b.WriteString("\n")
 
 	if t.width < 50 {
-		b.WriteString(lipgloss.JoinVertical(lipgloss.Left, leftView, rightView))
+		b.WriteString(lipgloss.PlaceHorizontal(t.width, lipgloss.Center, indicator))
+		b.WriteString("\n")
+		b.WriteString(leftView)
 	} else {
 		b.WriteString(lipgloss.JoinHorizontal(lipgloss.Top, leftView, rightView))
 	}