feat: change email, export my data, delete account (with data anonymization)

internal/domain/author/authorDomain.go

@@ -112,7 +112,7 @@ type Page struct {
 }
 
 func IsValidSlug(candidate string) bool {
-	return slug.IsValid(candidate)
+	return slug.IsValid(candidate) && !IsReservedSlug(candidate)
 }
 
 func IsValidName(name string) bool {
@@ -172,9 +172,9 @@ func ValidateLinks(links []SocialLink) error {
 }
 
 func GenerateSlug(name string) string {
-	return slug.Generate(name, FallbackSlug)
+	return avoidReserved(slug.Generate(name, FallbackSlug))
 }
 
 func SlugWithSuffix(base string, attempt int) string {
-	return slug.WithSuffix(base, attempt)
+	return avoidReserved(slug.WithSuffix(base, attempt))
 }