fix(tui): suppress preflight stdout output in TUI mode to prevent scrambled display

- Add silentMode field to restore Engine struct
- Set silentMode=true in NewSilent() constructor for TUI mode
- Skip fmt.Println output in printPreflightSummary when in silent mode
- Log summary instead of printing to stdout in TUI mode
- Fixes scrambled output during cluster restore preflight checks

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_11:19:47_UTC
-- **Git Commit**: 490a12f
+- **Build Time**: 2026-01-18_11:39:42_UTC
+- **Git Commit**: 59a717a
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output