legal: TCC and Lua license declarations

- THIRD-PARTY-NOTICES.txt gains sections for the Tiny C Compiler
  (0.9.28rc, LGPL-2.1, modified for MontaukOS; source in
  programs/src/tcc/) and Lua (5.4.8, MIT, Lua.org PUC-Rio).
- LGPL-2.1 full text ships at 0:/os/licenses/LGPL-2.1.txt (copied from
  the vendored TCC COPYING); Lua's MIT text is reproduced in the
  notices file.
- Both components added to the license's third-party list and man legal.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

montaukos.org/THIRD-PARTY-NOTICES.txt

@@ -248,6 +248,65 @@ exception, is included on the MontaukOS ISO at 0:/os/licenses/AGPL-3.0-C059.txt.
   themselves, available unmodified from the upstream repository above.
 
 
+================================================================================
+10. Tiny C Compiler (TCC)
+================================================================================
+Shipped as the bundled C compiler (tcc.elf) with its runtime libraries and
+headers on the ISO (0:/lib/tcc/). MontaukOS ships a modified version of TCC
+0.9.28rc, ported to target MontaukOS (added platform startup/compatibility
+code and a MontaukOS sysroot).
+
+  Copyright (c) 2001-2004 Fabrice Bellard, and TCC contributors
+  Upstream: https://repo.or.cz/tinycc.git
+
+License: GNU Lesser General Public License, version 2.1 (LGPL-2.1)
+
+  TCC is free software; you can redistribute it and/or modify it under the
+  terms of the GNU Lesser General Public License as published by the Free
+  Software Foundation; either version 2.1 of the License, or (at your option)
+  any later version.
+
+  IMPORTANT: TCC is licensed under LGPL-2.1, separately from MontaukOS itself.
+  The MontaukOS Software License does NOT apply to TCC. The full LGPL-2.1
+  license text is included on the MontaukOS ISO at
+  0:/os/licenses/LGPL-2.1.txt.
+
+  MODIFICATIONS AND SOURCE: The complete source code of the modified TCC as
+  shipped, marked as modified, is published in the MontaukOS source tree
+  (programs/src/tcc/) and is also available on request:
+  daniel@nexlink.cloud.
+
+
+================================================================================
+11. Lua
+================================================================================
+Shipped as the bundled Lua interpreter (lua.elf), Lua 5.4.8, with its static
+library and headers on the ISO (0:/lib/lua/).
+
+License: MIT License
+
+  Copyright (C) 1994-2025 Lua.org, PUC-Rio.
+
+  Permission is hereby granted, free of charge, to any person obtaining
+  a copy of this software and associated documentation files (the
+  "Software"), to deal in the Software without restriction, including
+  without limitation the rights to use, copy, modify, merge, publish,
+  distribute, sublicense, and/or sell copies of the Software, and to
+  permit persons to whom the Software is furnished to do so, subject to
+  the following conditions:
+
+  The above copyright notice and this permission notice shall be
+  included in all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
 ================================================================================
 For licensing inquiries regarding MontaukOS itself, contact: daniel@nexlink.cloud
 ================================================================================