Fix panic in TUI backup manager verify when logger is nil

- Add nil checks before logger calls in diagnose.go (8 places)
- Add nil checks before logger calls in safety.go (2 places)
- Fixes crash when pressing 'v' to verify backup in interactive menu

bin/README.md

@@ -4,8 +4,8 @@ This directory contains pre-compiled binaries for the DB Backup Tool across mult
 
 ## Build Information
 - **Version**: 3.42.34
-- **Build Time**: 2026-01-14_15:59:44_UTC
-- **Git Commit**: ec5e89e
+- **Build Time**: 2026-01-14_16:06:08_UTC
+- **Git Commit**: ba6e8a2
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output