fix: improve lock capacity calculation for smaller VMs

- Fix boostLockCapacity: max_locks_per_transaction requires RESTART, not reload
- Calculate total lock capacity: max_locks × (max_connections + max_prepared_txns)
- Add TotalLockCapacity to preflight checks with warning if < 200,000
- Update error hints to explain capacity formula and recommend 4096+ for small VMs
- Show max_connections and total capacity in preflight summary

Fixes OOM 'out of shared memory' errors on VMs with reduced resources

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**: 2026-01-16_18:37:32_UTC
-- **Git Commit**: 9200024
+- **Build Time**: 2026-01-17_06:25:57_UTC
+- **Git Commit**: 4ea3ec2
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output