Alexander Renz
59812400a4
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## SIGINT Cleanup - Zero Zombie Processes
- Add cleanup.SafeCommand() with process group setup (Setpgid=true)
- Replace all exec.CommandContext with cleanup.SafeCommand in backup/restore
- Replace cmd.Process.Kill() with cleanup.KillCommandGroup() for entire process tree
- Add cleanup.Handler for graceful shutdown with registered cleanup functions
- Add rich cluster progress view for TUI
- Add test script: scripts/test-sigint-cleanup.sh
## Eliminate External gzip Process
- Replace zgrep (spawns gzip -cdfq) with in-process pgzip decompression
- All decompression now uses parallel pgzip (2-4x faster, no subprocess)
Files modified:
- internal/cleanup/command.go, command_windows.go, handler.go (new)
- internal/backup/engine.go (7 SafeCommand + 6 KillCommandGroup)
- internal/restore/engine.go (19 SafeCommand + 2 KillCommandGroup)
- internal/restore/{fast_restore,safety,diagnose,preflight,large_db_guard,version_check,error_report}.go
- internal/tui/restore_exec.go, rich_cluster_progress.go (new)