Restore fails fast on first error; --skip-errors is now global

restore aborts on the first per-file failure by default, surfacing
the file path and the underlying error and suggesting --skip-errors
to continue past failures.

--skip-errors moved from a 'snapshot create' subcommand flag to a
top-level persistent flag on the root command. It applies to both
snapshot create and restore. Old 'vaultik snapshot create --skip-
errors' still works because persistent flags are inherited.

internal/cli/root.go

@@ -45,6 +45,7 @@ type RootFlags struct {
 	Verbose    bool
 	Debug      bool
 	Quiet      bool
+	SkipErrors bool
 }
 
 var rootFlags RootFlags
@@ -84,6 +85,7 @@ on the source system.`,
 	cmd.PersistentFlags().BoolVarP(&rootFlags.Verbose, "verbose", "v", false, "Enable verbose output")
 	cmd.PersistentFlags().BoolVar(&rootFlags.Debug, "debug", false, "Enable debug output")
 	cmd.PersistentFlags().BoolVarP(&rootFlags.Quiet, "quiet", "q", false, "Suppress non-error output")
+	cmd.PersistentFlags().BoolVar(&rootFlags.SkipErrors, "skip-errors", false, "Continue past per-file errors instead of aborting (applies to snapshot create and restore)")
 
 	// Add subcommands
 	cmd.AddCommand(