BREAKING CHANGE: Removed 'large-db' as standalone profile
New Design:
- Resource Profiles now purely represent VM capacity:
conservative, balanced, performance, max-performance
- LargeDBMode is a separate boolean toggle that modifies any profile:
- Reduces ClusterParallelism and Jobs by 50%
- Forces MaxLocksPerTxn = 8192
- Increases MaintenanceWorkMem
TUI Changes:
- 'l' key now toggles LargeDBMode ON/OFF instead of applying large-db profile
- New 'Large DB Mode' setting in settings menu
- Settings are persisted to .dbbackup.conf
This allows any resource profile to be combined with large database
optimization, giving users more flexibility on both small and large VMs.
- Add memory detection for Linux, macOS, Windows
- Add 5 predefined profiles: conservative, balanced, performance, max-performance, large-db
- Add Resource Profile and Cluster Parallelism settings in TUI
- Add quick hotkeys: 'l' for large-db, 'c' for conservative, 'p' for recommendations
- Display system resources (CPU cores, memory) and recommended profile
- Auto-detect and recommend profile based on system resources
Fixes 'out of shared memory' errors when restoring large databases on small VMs.
Use 'large-db' or 'conservative' profile for large databases on constrained systems.
