license and some functions

src/api/files.rs

@@ -1,5 +1,14 @@
-use super::*;
+/*
+ * Copyright (C) 2026 Mateusz Gruszczyński @linuxiarz.pl
+ * Source-Available Code / Dual-Licensed.
+ *
+ * Free for non-commercial and evaluation use under terms of BSL/GPLv3.
+ * Commercial or production use requires a valid paid license.
+ * See LICENSE file in repository root for details.
+ */
+
 use super::pads_public::authorized_pad;
+use super::*;
 
 pub async fn upload_pad_file(
     State(state): State<SharedState>,
@@ -485,4 +494,3 @@ fn sanitize_filename(value: &str) -> String {
         clean.chars().take(160).collect()
     }
 }
-