fix: cluster backup TUI success report formatting consistency

- Aligned box width and indentation with restore success screen
- Removed inconsistent 2-space prefix from success/error boxes
- Standardized content indentation to 4 spaces
- Moved timing section outside else block (always shown)
- Updated footer style to match restore screen

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_12:41:47_UTC
+- **Git Commit**: 62d58c7
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output