fix: cap vertical padding + horizontal centering per line

- 2 lines top padding instead of aggressive vertical centering
- centerText() uses lipgloss.Width for accurate ANSI-aware centering
- Each card line centered individually within terminal width
- Card width capped at 74 chars

pkg/tui/host_list_tab.go

@@ -111,49 +111,50 @@ func (t *HostListTab) View() string {
 		availW = 80
 	}
 
-	// Constrain content width so cards don't stretch too wide
-	contentW := availW
-	if contentW > 80 {
-		contentW = 80
+	cardW := availW - 6
+	if cardW > 74 {
+		cardW = 74
+	}
+	if cardW < 30 {
+		cardW = 30
 	}
 
 	var b strings.Builder
 
-	// Centered title
-	title := AppTitleStyle.Render(" HOSTKEEPER - SSH Manager ")
-	b.WriteString(lipgloss.Place(contentW, 1, lipgloss.Center, lipgloss.Center, title))
+	// Capped vertical padding
+	b.WriteString(strings.Repeat("\n", 2))
+
+	// Title
+	b.WriteString(centerText(AppTitleStyle.Render(" HOSTKEEPER - SSH Manager "), availW))
 	b.WriteString("\n\n")
 
 	if len(t.hosts) == 0 {
-		b.WriteString(lipgloss.Place(contentW, 1, lipgloss.Center, lipgloss.Center,
-			SubtitleStyle.Render("No hosts found. Add with Ctrl+N")))
+		b.WriteString(centerText(SubtitleStyle.Render("No hosts found. Add with Ctrl+N"), availW))
+		b.WriteString("\n")
 	} else {
-		cardW := contentW - 4
-		if cardW < 30 {
-			cardW = 30
-		}
 		for i, host := range t.hosts {
 			entry := renderHostEntry(host, i == t.selectedIndex, cardW)
-			b.WriteString(entry)
+			// Center the card (which produces 4 lines) horizontally
+			for _, line := range strings.Split(entry, "\n") {
+				b.WriteString(centerText(line, availW))
+				b.WriteString("\n")
+			}
 			b.WriteString("\n")
 		}
 	}
 
-	// Center horizontally within the full terminal width
-	content := lipgloss.Place(availW, 1, lipgloss.Center, lipgloss.Top, b.String())
+	return b.String()
+}
 
-	// Add vertical padding to push content toward center of screen
-	availH := t.height - 5
-	if availH < 0 {
-		availH = 0
+// centerText centers a line of text horizontally within the given width,
+// respecting ANSI escape codes for accurate display width.
+func centerText(s string, width int) string {
+	w := lipgloss.Width(s)
+	if w >= width {
+		return s
 	}
-	contentLines := strings.Count(content, "\n") + 1
-	if contentLines < availH {
-		topPad := (availH - contentLines) / 2
-		content = strings.Repeat("\n", topPad) + content
-	}
-
-	return content
+	pad := strings.Repeat(" ", (width-w)/2)
+	return pad + s
 }
 
 // Close is a no-op for host list tab