Close out the repository audit

internal/promptdebug/debug_writer.go

@@ -4,6 +4,7 @@ package promptdebug
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"net/url"
 	"path/filepath"
@@ -14,6 +15,11 @@ import (
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/report"
 )
 
+// ErrSecureCaptureUnsupported reports that the host cannot provide the
+// handle-relative, no-follow filesystem operations required for prompt debug
+// artifacts.
+var ErrSecureCaptureUnsupported = errors.New("secure prompt debug capture is unavailable on this platform")
+
 const (
 	promptPreparationDebugSchemaVersion = "weatherreporter.prompt_preparation_debug.v2"
 	promptExecutionDebugSchemaVersion   = "weatherreporter.prompt_execution_debug.v2"