chore: clean Apache 2.0 license + NOTICE + TRADEMARK

- LICENSE: pure Apache 2.0 standard text (no appended content)
- NOTICE: attribution, trademark, access model, CLA info
- TRADEMARK.md: brand protection policy

Fixes: removed non-license content from LICENSE for SPDX compliance.
See: https://github.com/MushroomDAO/launch/tree/main/docs/license

Author: jhfnetboy

NOTICE

@@ -7,25 +7,12 @@ This product includes software developed by MushroomDAO
 Licensed under the Apache License, Version 2.0.
 See LICENSE file for full terms.
 
-== Attribution Requirement (Apache 2.0 Section 4d) ==
+== Attribution ==
 
-All redistributions and derivative works MUST include the following attribution:
+Per Apache 2.0 Section 4(d), derivative works that distribute this software
+must retain this NOTICE file.
 
-    Built on Mycelium Protocol by MushroomDAO (https://mushroom.cv)
-
-== Trademark Notice ==
+== Trademark ==
 
 MushroomDAO, Mycelium Protocol, GToken, PNTs, and related names are trademarks
 of MushroomDAO. Forks must rebrand. See TRADEMARK.md for full policy.
-
-== Access Model ==
-
-  Code:     Apache 2.0 — free to use, modify, and distribute.
-  Network:  Accessing the live Mycelium Protocol network requires a GToken
-            ticket. The code is open; the network is gated.
-  Commercial: Contact HyperCapital (jason@aastar.io) for trademark and
-              network access for commercial purposes.
-
-== Contributor License Agreement ==
-
-All contributions require a signed CLA managed via cla-assistant.io.