v3.42.71: Fix error message formatting + code alignment

- Fixed incorrect diagnostic message for shared memory exhaustion
  (was 'Cannot access file', now 'PostgreSQL lock table exhausted')
- Improved clarity of lock capacity formula display
- Code formatting: aligned struct field comments for consistency
- Files affected: restore_exec.go, backup_exec.go, persist.go

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**: 2026-01-18_17:17:17_UTC
+- **Build Time**: 2026-01-18_17:52:44_UTC
-- **Git Commit**: a0a401c
+- **Git Commit**: f9ff45c
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output

internal/tui/restore_exec.go

@@ -1171,12 +1171,12 @@ func formatRestoreError(errStr string) string {
 
 	// Provide specific recommendations based on error
 	if strings.Contains(errStr, "out of shared memory") || strings.Contains(errStr, "max_locks_per_transaction") {
-		s.WriteString(errorStyle.Render("    • Cannot access file: stat : no such file or directory\n"))
+		s.WriteString(errorStyle.Render("    • PostgreSQL lock table exhausted\n"))
 		s.WriteString("\n")
 		s.WriteString(infoStyle.Render("  ─── [HINT] Recommendations ────────────────────────────────"))
 		s.WriteString("\n\n")
-		s.WriteString("    Lock table exhausted. Total capacity = max_locks_per_transaction\n")
+		s.WriteString("    Lock capacity = max_locks_per_transaction\n")
-		s.WriteString("    × (max_connections + max_prepared_transactions).\n\n")
+		s.WriteString("    × (max_connections + max_prepared_transactions)\n\n")
 		s.WriteString("    If you reduced VM size or max_connections, you need higher\n")
 		s.WriteString("    max_locks_per_transaction to compensate.\n\n")
 		s.WriteString(successStyle.Render("    FIX OPTIONS:\n"))