docs: rename LICENSE.md to THIRD-PARTY-NOTICES.md

Two files both called LICENSE-something, both opening with the full ISC text,
read as rival copies of the same licence. That was my error when adding LICENSE
for GitHub's detector.

LICENSE.md could not simply be deleted: it carries the Lua and LuaFileSystem
MIT notices, and MIT requires those to travel with any copy of the code. So the
fix is to stop duplicating rather than to remove. LICENSE is now the single
statement of this project's licence, and THIRD-PARTY-NOTICES.md holds only the
vendored notices, with the duplicated ISC text dropped.

Also writes out LuaFileSystem's MIT terms in full instead of saying 'on the same
terms as above', which stopped being true once the ISC block above it was
removed.

Updates the files allowlist, the release tarball guard and the README. Verified:
67 files, LICENSE and THIRD-PARTY-NOTICES.md both present, LICENSE.md gone.

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

Author: mschmicking

.github/workflows/release.yml

@@ -80,7 +80,7 @@ jobs:
             }
             const files = entry.files.map(f => f.path);
 
-            const needed = ['index.js', 'binding.gyp', 'src/luastate.cc', 'src/nodelua.cc', 'src/utils.cc', 'vendor/lfs/lfs.c', 'README.md', 'LICENSE', 'LICENSE.md'];
+            const needed = ['index.js', 'binding.gyp', 'src/luastate.cc', 'src/nodelua.cc', 'src/utils.cc', 'vendor/lfs/lfs.c', 'README.md', 'LICENSE', 'THIRD-PARTY-NOTICES.md'];
             const missing = needed.filter(n => !files.includes(n));
             if (missing.length) {
               console.error('missing from tarball:', missing.join(', '));

LICENSE.md

@@ -350,4 +350,5 @@ there is no npm token stored in this repository.
 
 ## License
 
-ISC — see [LICENSE.md](LICENSE.md), which also covers the vendored Lua and LuaFileSystem sources.
+ISC — see [LICENSE](LICENSE). The vendored Lua and LuaFileSystem sources are MIT; their
+notices are in [THIRD-PARTY-NOTICES.md](THIRD-PARTY-NOTICES.md).

README.md

@@ -0,0 +1,56 @@
+# Third-party notices
+
+This package compiles third-party sources directly into the addon. Both are MIT
+licensed, and MIT requires their copyright notices to travel with any copy — which is
+why this file exists and ships in the npm tarball.
+
+**This project's own licence is ISC and lives in [LICENSE](LICENSE).** Nothing below
+changes it.
+
+## Lua 5.1.5 — `vendor/lua/`
+
+Verbatim copy of the upstream release; see also `vendor/lua/COPYRIGHT`.
+
+Copyright (C) 1994-2012 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.
+
+## LuaFileSystem 1.8.0 — `vendor/lfs/`
+
+Verbatim copy of the upstream release; see also `vendor/lfs/LICENSE`.
+
+Copyright (c) 2003-2020 Kepler Project.
+
+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.

THIRD-PARTY-NOTICES.md

@@ -28,7 +28,7 @@
     "vendor/",
     "README.md",
     "LICENSE",
-    "LICENSE.md"
+    "THIRD-PARTY-NOTICES.md"
   ],
   "scripts": {
     "install": "node-gyp rebuild",