License: GPL-3.0-or-later

Full GPL-3.0 text in LICENSE, SPDX-License-Identifier header on every
source file, README license section updated. Copyright (C) 2026 Knutwurst.

Tidied a couple of stale comments in patchdl_tile.{c,h} while at it.

src/patchdl_tile.h

@@ -1,23 +1,29 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later
+ * Copyright (C) 2026 Knutwurst
+ *
+ * PatchDL is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option)
+ * any later version. See the LICENSE file in the project root for details.
+ */
+
 #pragma once
 
 #include <stddef.h>
 
 /* Install / refresh the PatchDL home-screen tile.
  *
- * Approach (from itsPLK's ps5-payload-manager/app_installer.c, which adapted
- * John Tornblom's ftpsrv work): write param.json + icon0.png into
- *   /user/app/<TITLE_ID>/sce_sys/
- * then call sceAppInstUtilAppInstallTitleDir(title_id, "/user/app/", 0)
- * which registers the directory as an app. The tile's deeplinkUri opens
- * Sony's WebKit browser at http://127.0.0.1:12880/, i.e. PatchDL's own UI
- * — only useful while the ELF is running.
+ * Writes param.json + icon0.png into /user/app/<TITLE_ID>/sce_sys/ and asks
+ * the on-console installer to register the directory as an app. The tile's
+ * deeplinkUri opens the on-console browser at http://127.0.0.1:12880/, i.e.
+ * PatchDL's own UI — only useful while the ELF is running.
  *
- * No PKG, no code signing, no debug-magic. Files only — Sony's installer
- * registers the directory as an app.
+ * No package, no code signing — files only; the installer reads the
+ * directory directly.
  *
  * stat-guard: the asset bytes are diffed against the on-disk copy first;
- * if nothing changed the install API isn't called at all (avoids a costly
- * re-register every payload start, and avoids the dangerous CancelInstall
- * code path). Returns 0 on success or when nothing needed doing.
+ * if nothing changed the install call isn't made at all (avoids a costly
+ * re-register every payload start). Returns 0 on success or when nothing
+ * needed doing.
  */
 int patchdl_tile_install_if_needed(char *msg, size_t msg_sz);