Make Moon-owned ARMSX material proprietary

LICENSE

@@ -1,21 +1,58 @@
-MIT License
+ARMSX PROPRIETARY LICENSE
 
-Copyright (c) 2024 Allkern (Lisandro Alarcón)
+Copyright (c) 2026 Moon. All rights reserved.
 
-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:
+1. Proprietary ownership
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+ARMSX-specific source code, documentation, artwork, branding, binaries, and
+other material for which Moon owns the applicable copyright or has authority
+to license it ("Moon Materials") are proprietary and confidential works owned
+by Moon.
 
-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.
+2. No permission granted
+
+No license or permission is granted to use, execute, copy, reproduce, modify,
+adapt, translate, reverse engineer, decompile, disassemble, publish, display,
+distribute, sublicense, sell, rent, host, transmit, create derivative works
+from, or commercially exploit any Moon Materials.
+
+Any such action requires Moon's prior express written permission and is
+subject to a separate written agreement signed by Moon. Possession of or
+access to the Moon Materials does not grant any rights, whether by implication,
+estoppel, or otherwise.
+
+3. Reservation of rights
+
+All rights not expressly granted in a separate written agreement signed by
+Moon are reserved. No patent, trademark, trade-name, logo, branding, or other
+intellectual-property rights are granted. "ARMSX", Moon branding, and
+associated logos may not be used without Moon's prior express written
+permission.
+
+4. Excluded and third-party material
+
+This proprietary license applies only to Moon Materials. It does not claim
+ownership of, relicense, restrict, or supersede material owned by Allkern,
+Lisandro Alarcon, other contributors, or third parties.
+
+The upstream psxe material previously distributed under the MIT License
+remains under that license, which is preserved in
+LICENSES/UPSTREAM-MIT.txt. Files under third_party/, bundled frameworks, and
+files containing their own copyright or license notices remain governed by
+their respective licenses. Recipients must comply with all applicable
+third-party notices.
+
+5. No warranty
+
+TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE MOON MATERIALS ARE PROVIDED "AS
+IS" AND "AS AVAILABLE", WITHOUT WARRANTY OF ANY KIND. MOON DISCLAIMS ALL
+EXPRESS, IMPLIED, AND STATUTORY WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. TO THE MAXIMUM EXTENT
+PERMITTED BY LAW, MOON SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL,
+INCIDENTAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES ARISING FROM THE
+MOON MATERIALS OR THEIR USE.
+
+6. Permission requests
+
+Any requested access or use must be authorized by Moon in a separate written
+agreement signed by Moon before that access or use occurs.

LICENSES/UPSTREAM-MIT.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Allkern (Lisandro Alarcón)
+
+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.

README.md

@@ -169,6 +169,12 @@ The cases cover source invariants, cached/reference CPU differential execution a
 
 `make test-sdl-runtime` is an optional headed host check that creates an accelerated SDL2 renderer, uploads a BGR555 texture, and presents it. It is intentionally not part of the deterministic matrix because graphical CI runners may not have a display or accelerated SDL driver.
 
+## License
+
+ARMSX-specific material owned by Moon is proprietary and all rights are reserved. No use, copying, modification, redistribution, publication, commercial exploitation, or creation of derivative works is permitted without Moon's prior express written permission.
+
+This proprietary license applies only to material Moon owns or is authorized to license. Upstream psxe code, contributor-owned portions, bundled frameworks, and third-party dependencies retain their existing licenses. See [LICENSE](LICENSE) and [LICENSES/UPSTREAM-MIT.txt](LICENSES/UPSTREAM-MIT.txt).
+
 ## Acknowledgements
 ARMSX uses:
 - `argparse.c`