- CLI flags were being overwritten by .dbbackup.conf values
- Implemented flag tracking using cmd.Flags().Visit()
- Explicit flags now preserved after config loading
- Fixes backup-dir, host, port, compression, and other flags
- All backup files (.dump, .sha256, .info) now created correctly
Also fixed QA test issues:
- grep -q was closing pipe early, killing backup before completion
- Fixed glob patterns in test assertions
- Corrected config file field names (backup_dir not dir)
QA Results: 22/24 tests pass (92%), 0 CRITICAL issues
Remaining 2 failures are TUI tests requiring expect/pexpect
