fix: cluster restore database detection and TUI error display

- Fixed psql connection for database detection (always use -h flag)
- Use CombinedOutput() to capture stderr for better diagnostics
- Added existingDBError tracking in restore preview
- Show 'Unable to detect' instead of misleading 'None' when listing fails
- Disable cleanup toggle when database detection failed

bin/README.md

@@ -4,8 +4,8 @@ This directory contains pre-compiled binaries for the DB Backup Tool across mult
 
 ## Build Information
 - **Version**: 3.42.50
-- **Build Time**: 2026-01-17_12:25:20_UTC
-- **Git Commit**: c5be9bc
+- **Build Time**: 2026-01-17_15:26:14_UTC
+- **Git Commit**: df1ab2f
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output

internal/restore/safety.go

@@ -334,10 +334,12 @@ func (s *Safety) checkPostgresDatabaseExists(ctx context.Context, dbName string)
 		"-tAc", fmt.Sprintf("SELECT 1 FROM pg_database WHERE datname='%s'", dbName),
 	}
 
-	// Only add -h flag if host is not localhost (to use Unix socket for peer auth)
-	if s.cfg.Host != "localhost" && s.cfg.Host != "127.0.0.1" && s.cfg.Host != "" {
-		args = append([]string{"-h", s.cfg.Host}, args...)
+	// Always add -h flag for explicit host connection (required for password auth)
+	host := s.cfg.Host
+	if host == "" {
+		host = "localhost"
 	}
+	args = append([]string{"-h", host}, args...)
 
 	cmd := exec.CommandContext(ctx, "psql", args...)
 
@@ -346,9 +348,9 @@ func (s *Safety) checkPostgresDatabaseExists(ctx context.Context, dbName string)
 		cmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", s.cfg.Password))
 	}
 
-	output, err := cmd.Output()
+	output, err := cmd.CombinedOutput()
 	if err != nil {
-		return false, fmt.Errorf("failed to check database existence: %w", err)
+		return false, fmt.Errorf("failed to check database existence: %w (output: %s)", err, strings.TrimSpace(string(output)))
 	}
 
 	return strings.TrimSpace(string(output)) == "1", nil
@@ -405,10 +407,13 @@ func (s *Safety) listPostgresUserDatabases(ctx context.Context) ([]string, error
 		"-c", query,
 	}
 
-	// Only add -h flag if host is not localhost (to use Unix socket for peer auth)
-	if s.cfg.Host != "localhost" && s.cfg.Host != "127.0.0.1" && s.cfg.Host != "" {
-		args = append([]string{"-h", s.cfg.Host}, args...)
+	// Always add -h flag for explicit host connection (required for password auth)
+	// Empty or unset host defaults to localhost
+	host := s.cfg.Host
+	if host == "" {
+		host = "localhost"
 	}
+	args = append([]string{"-h", host}, args...)
 
 	cmd := exec.CommandContext(ctx, "psql", args...)
 
@@ -417,9 +422,10 @@ func (s *Safety) listPostgresUserDatabases(ctx context.Context) ([]string, error
 		cmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", s.cfg.Password))
 	}
 
-	output, err := cmd.Output()
+	output, err := cmd.CombinedOutput()
 	if err != nil {
-		return nil, fmt.Errorf("failed to list databases: %w", err)
+		// Include psql output in error for debugging
+		return nil, fmt.Errorf("failed to list databases: %w (output: %s)", err, strings.TrimSpace(string(output)))
 	}
 
 	// Parse output

internal/tui/backup_exec.go

@@ -454,26 +454,24 @@ func (m BackupExecutionModel) View() string {
 	} else {
 		// Show completion summary with detailed stats
 		if m.err != nil {
+			s.WriteString(errorStyle.Render("╔══════════════════════════════════════════════════════════════╗"))
 			s.WriteString("\n")
-			s.WriteString(errorStyle.Render("  ╔══════════════════════════════════════════════════════════╗"))
+			s.WriteString(errorStyle.Render("║              [FAIL] BACKUP FAILED                            ║"))
 			s.WriteString("\n")
-			s.WriteString(errorStyle.Render("  ║              [FAIL] BACKUP FAILED                        ║"))
-			s.WriteString("\n")
-			s.WriteString(errorStyle.Render("  ╚══════════════════════════════════════════════════════════╝"))
+			s.WriteString(errorStyle.Render("╚══════════════════════════════════════════════════════════════╝"))
 			s.WriteString("\n\n")
 			s.WriteString(errorStyle.Render(fmt.Sprintf("  Error: %v", m.err)))
 			s.WriteString("\n")
 		} else {
+			s.WriteString(successStyle.Render("╔══════════════════════════════════════════════════════════════╗"))
 			s.WriteString("\n")
-			s.WriteString(successStyle.Render("  ╔══════════════════════════════════════════════════════════╗"))
+			s.WriteString(successStyle.Render("║           [OK] BACKUP COMPLETED SUCCESSFULLY                 ║"))
 			s.WriteString("\n")
-			s.WriteString(successStyle.Render("  ║           [OK] BACKUP COMPLETED SUCCESSFULLY             ║"))
-			s.WriteString("\n")
-			s.WriteString(successStyle.Render("  ╚══════════════════════════════════════════════════════════╝"))
+			s.WriteString(successStyle.Render("╚══════════════════════════════════════════════════════════════╝"))
 			s.WriteString("\n\n")
 
 			// Summary section
-			s.WriteString(infoStyle.Render("    ─── Summary ─────────────────────────────────────────────"))
+			s.WriteString(infoStyle.Render("  ─── Summary ───────────────────────────────────────────────"))
 			s.WriteString("\n\n")
 
 			// Backup type specific info
@@ -493,26 +491,24 @@ func (m BackupExecutionModel) View() string {
 			}
 
 			s.WriteString("\n")
+		}
 
-			// Timing section
-			s.WriteString(infoStyle.Render("    ─── Timing ──────────────────────────────────────────────"))
+		// Timing section (always shown, consistent with restore)
+		s.WriteString(infoStyle.Render("  ─── Timing ────────────────────────────────────────────────"))
 		s.WriteString("\n\n")
 
 		elapsed := time.Since(m.startTime)
 		s.WriteString(fmt.Sprintf("    Total Time:    %s\n", formatBackupDuration(elapsed)))
 
-			if m.backupType == "cluster" && m.dbTotal > 0 {
+		if m.backupType == "cluster" && m.dbTotal > 0 && m.err == nil {
 			avgPerDB := elapsed / time.Duration(m.dbTotal)
 			s.WriteString(fmt.Sprintf("    Avg per DB:    %s\n", formatBackupDuration(avgPerDB)))
 		}
 
 		s.WriteString("\n")
-			s.WriteString(infoStyle.Render("    ─────────────────────────────────────────────────────────"))
-			s.WriteString("\n")
-		}
-
-		s.WriteString("\n")
-		s.WriteString("  [KEY]  Press Enter or ESC to return to menu\n")
+		s.WriteString(infoStyle.Render("  ───────────────────────────────────────────────────────────"))
+		s.WriteString("\n\n")
+		s.WriteString(infoStyle.Render("  [KEYS]  Press Enter to continue"))
 	}
 
 	return s.String()

internal/tui/menu.go

@@ -299,9 +299,13 @@ func (m *MenuModel) View() string {
 
 	var s string
 
+	// Product branding header
+	brandLine := fmt.Sprintf("dbbackup v%s • Enterprise Database Backup & Recovery", m.config.Version)
+	s += "\n" + infoStyle.Render(brandLine) + "\n"
+
 	// Header
-	header := titleStyle.Render("Database Backup Tool - Interactive Menu")
-	s += fmt.Sprintf("\n%s\n\n", header)
+	header := titleStyle.Render("Interactive Menu")
+	s += fmt.Sprintf("%s\n\n", header)
 
 	if len(m.dbTypes) > 0 {
 		options := make([]string, len(m.dbTypes))

internal/tui/restore_preview.go

@@ -55,6 +55,7 @@ type RestorePreviewModel struct {
 	cleanClusterFirst bool     // For cluster restore: drop all user databases first
 	existingDBCount   int      // Number of existing user databases
 	existingDBs       []string // List of existing user databases
+	existingDBError   string   // Error message if database listing failed
 	safetyChecks      []SafetyCheck
 	checking          bool
 	canProceed        bool
@@ -102,6 +103,7 @@ type safetyCheckCompleteMsg struct {
 	canProceed      bool
 	existingDBCount int
 	existingDBs     []string
+	existingDBError string
 }
 
 func runSafetyChecks(cfg *config.Config, log logger.Logger, archive ArchiveInfo, targetDB string) tea.Cmd {
@@ -221,10 +223,12 @@ func runSafetyChecks(cfg *config.Config, log logger.Logger, archive ArchiveInfo,
 			check = SafetyCheck{Name: "Existing databases", Status: "checking", Critical: false}
 
 			// Get list of existing user databases (exclude templates and system DBs)
+			var existingDBError string
 			dbList, err := safety.ListUserDatabases(ctx)
 			if err != nil {
 				check.Status = "warning"
 				check.Message = fmt.Sprintf("Cannot list databases: %v", err)
+				existingDBError = err.Error()
 			} else {
 				existingDBCount = len(dbList)
 				existingDBs = dbList
@@ -238,6 +242,14 @@ func runSafetyChecks(cfg *config.Config, log logger.Logger, archive ArchiveInfo,
 				}
 			}
 			checks = append(checks, check)
+
+			return safetyCheckCompleteMsg{
+				checks:          checks,
+				canProceed:      canProceed,
+				existingDBCount: existingDBCount,
+				existingDBs:     existingDBs,
+				existingDBError: existingDBError,
+			}
 		}
 
 		return safetyCheckCompleteMsg{
@@ -257,6 +269,7 @@ func (m RestorePreviewModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.canProceed = msg.canProceed
 		m.existingDBCount = msg.existingDBCount
 		m.existingDBs = msg.existingDBs
+		m.existingDBError = msg.existingDBError
 		// Auto-forward in auto-confirm mode
 		if m.config.TUIAutoConfirm {
 			return m.parent, tea.Quit
@@ -275,6 +288,10 @@ func (m RestorePreviewModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 		case "c":
 			if m.mode == "restore-cluster" {
+				// Prevent toggle if we couldn't detect existing databases
+				if m.existingDBError != "" {
+					m.message = checkWarningStyle.Render("[WARN] Cannot enable cleanup - database detection failed")
+				} else {
 					// Toggle cluster cleanup
 					m.cleanClusterFirst = !m.cleanClusterFirst
 					if m.cleanClusterFirst {
@@ -282,6 +299,7 @@ func (m RestorePreviewModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 					} else {
 						m.message = fmt.Sprintf("Clean cluster first: disabled")
 					}
+				}
 			} else {
 				// Toggle create if missing
 				m.createIfMissing = !m.createIfMissing
@@ -382,7 +400,11 @@ func (m RestorePreviewModel) View() string {
 		s.WriteString("\n")
 		s.WriteString(fmt.Sprintf("  Host: %s:%d\n", m.config.Host, m.config.Port))
 
-		if m.existingDBCount > 0 {
+		if m.existingDBError != "" {
+			// Show error when database listing failed
+			s.WriteString(checkWarningStyle.Render(fmt.Sprintf("  Existing Databases: Unable to detect (%s)\n", m.existingDBError)))
+			s.WriteString(infoStyle.Render("  (Cleanup option disabled - cannot verify database status)\n"))
+		} else if m.existingDBCount > 0 {
 			s.WriteString(fmt.Sprintf("  Existing Databases: %d found\n", m.existingDBCount))
 
 			// Show first few database names