feat: add precise diagnostics and optional client copy logging controls

lifecycle/phases.go

@@ -7,6 +7,8 @@ import (
 	"strings"
 	"time"
 	"unicode"
+
+	"git.yuntuo.hk/k2safe/go-omni/internal/configdiag"
 )
 
 // ErrResourcesRetained means background quiescence could not be established.
@@ -24,8 +26,13 @@ func DefaultShutdownConfig() ShutdownConfig {
 	return ShutdownConfig{StopTimeout: 5 * time.Second, DrainTimeout: 10 * time.Second, CancelTimeout: 5 * time.Second}
 }
 func (c ShutdownConfig) Validate() error {
-	if c.StopTimeout < 0 || c.DrainTimeout < 0 || c.CancelTimeout < 0 {
-		return errors.New("lifecycle: shutdown timeouts must be nonnegative")
+	for _, f := range []struct {
+		name  string
+		value time.Duration
+	}{{"stopTimeout", c.StopTimeout}, {"drainTimeout", c.DrainTimeout}, {"cancelTimeout", c.CancelTimeout}} {
+		if f.value < 0 {
+			return configdiag.New(f.name, "must be nonnegative")
+		}
 	}
 	return nil
 }