fix: change back navigation to 'b' key and improve deletion confirmation with name verification

- Changed 'q' key to 'b' for back navigation in client details
- Added 'esc' key binding for back navigation
- Updated help text to reflect new key bindings
- Created new DeleteConfirmModal component with name verification
- User must type exact client name to confirm deletion (safety feature)
- Improved modal styling with visual feedback (red/green indicators)
- Case-sensitive name matching to prevent accidental deletions

Fixes: wg-admin-az7

internal/tui/screens/detail.go

@@ -17,7 +17,7 @@ type DetailScreen struct {
 	lastHandshake   time.Time
 	transferRx      string
 	transferTx      string
-	confirmModal    *components.ConfirmModel
+	confirmModal    *components.DeleteConfirmModel
 	showConfirm     bool
 	clipboardCopied bool
 	clipboardTimer  int
@@ -97,16 +97,6 @@ func (s *DetailScreen) Update(msg tea.Msg) (Screen, tea.Cmd) {
 			return s, nil
 		}
 
-		// Handle Enter key to confirm
-		switch msg := msg.(type) {
-		case tea.KeyMsg:
-			if msg.String() == "enter" && s.confirmModal.IsConfirmed() {
-				return s, tea.Batch(s.deleteClient(), func() tea.Msg {
-					return CloseDetailScreenMsg{}
-				})
-			}
-		}
-
 		return s, cmd
 	}
 
@@ -121,13 +111,13 @@ func (s *DetailScreen) Update(msg tea.Msg) (Screen, tea.Cmd) {
 		s.transferTx = msg.transferTx
 	case tea.KeyMsg:
 		switch msg.String() {
-		case "q", "esc":
+		case "b", "esc":
 			// Return to list screen - signal parent to switch screens
 			return s, nil
 		case "d":
 			// Show delete confirmation
-			s.confirmModal = components.NewConfirm(
-				fmt.Sprintf("Are you sure you want to delete client '%s'?\n\nThis action cannot be undone.", s.client.Name),
+			s.confirmModal = components.NewDeleteConfirm(
+				s.client.Name,
 				80,
 				24,
 			)
@@ -196,7 +186,7 @@ func (s *DetailScreen) renderContent() string {
 	)
 
 	// Add help text
-	helpText := detailHelpStyle.Render("Actions: [d] Delete • [c] Copy Public Key • [q] Back")
+	helpText := detailHelpStyle.Render("Actions: [d] Delete • [c] Copy Public Key • [b] Back")
 	content = lipgloss.JoinVertical(lipgloss.Left, content, helpText)
 
 	// Show clipboard confirmation