Sable Schematics 0.2.43 DBS graph restore
- Restores native DBS schematic links through CableNetworkManager.mergeSavedConnections as saved network state.
- Bypasses DBS cross-sublevel new-cable validation only during saved schematic import.
- Uses DirectSubLevelSpawnBridge direct_plot_min_offset to map cable endpoints to the exact pasted ship origin.
- Adds per-link failure diagnostics instead of silently collapsing reflection errors.
- Retains DBW->DBS legacy migration and prior compatibility fixes.
