diff --git a/internal/strategy/git/git.go b/internal/strategy/git/git.go
index f678c95..5d76f1c 100644
--- a/internal/strategy/git/git.go
+++ b/internal/strategy/git/git.go
@@ -39,7 +39,7 @@ type Config struct {
 	SnapshotInterval       time.Duration `hcl:"snapshot-interval,optional" help:"How often to generate tar.zstd workstation snapshots. 0 disables snapshots." default:"0"`
 	MirrorSnapshotInterval time.Duration `hcl:"mirror-snapshot-interval,optional" help:"How often to generate mirror snapshots for pod bootstrap. 0 uses snapshot-interval. Defaults to 2h." default:"2h"`
 	RepackInterval         time.Duration `hcl:"repack-interval,optional" help:"How often to run full repack. 0 disables." default:"0"`
-	ZstdThreads            int           `hcl:"zstd-threads,optional" help:"Threads for zstd compression/decompression (0 = all CPU cores)." default:"0"`
+	ZstdThreads            int           `hcl:"zstd-threads,optional" help:"Threads for zstd compression/decompression. 0 = all CPU cores; useful for short-lived CLI invocations but risky on a long-running server where multiple snapshot/restore operations can run concurrently." default:"4"`
 }
 
 type Strategy struct {