feat(storage): rename snapraid_content to snapraid_conf; clarify conf vs content file; add auto-detect and conf viewer

internal/storage/snapraid.go

@@ -8,17 +8,17 @@ import (
 )
 
 type SnapraidConfig struct {
-	Content   string
-	DataDirs  []string
+	Conf     string
+	DataDirs []string
 	ParityDir string
 	ScrubPlan int
 }
 
 func BuildSnapraidArgs(kind string, cfg SnapraidConfig) ([]string, error) {
-	if cfg.Content == "" {
-		return nil, fmt.Errorf("snapraid content file is required")
+	if cfg.Conf == "" {
+		return nil, fmt.Errorf("snapraid conf file is required")
 	}
-	args := []string{"snapraid", "-c", cfg.Content}
+	args := []string{"snapraid", "-c", cfg.Conf}
 	switch kind {
 	case "snapraid_diff":
 		args = append(args, "diff")
@@ -34,16 +34,16 @@ func BuildSnapraidArgs(kind string, cfg SnapraidConfig) ([]string, error) {
 	return args, nil
 }
 
-func ValidateSnapraidContent(content string) error {
-	if content == "" {
-		return fmt.Errorf("snapraid content file is required")
+func ValidateSnapraidConf(conf string) error {
+	if conf == "" {
+		return fmt.Errorf("snapraid conf file is required")
 	}
-	info, err := os.Stat(content)
+	info, err := os.Stat(conf)
 	if err != nil {
-		return fmt.Errorf("snapraid content %s: %w", content, err)
+		return fmt.Errorf("snapraid conf %s: %w", conf, err)
 	}
 	if info.IsDir() {
-		return fmt.Errorf("snapraid content %s: is a directory, not a file", content)
+		return fmt.Errorf("snapraid conf %s: is a directory, not a file", conf)
 	}
 	return nil
 }