fix: add debug logging for database detection

- Always set cmd.Env to preserve PGPASSWORD from environment
- Add debug logging for connection parameters and results
- Helps diagnose cluster restore database detection issues

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_15:26:14_UTC
-- **Git Commit**: df1ab2f
+- **Build Time**: 2026-01-17_15:45:53_UTC
+- **Git Commit**: e363e19
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output