Add explicit explanation of CC-BY-SA-4.0 adherence before changes.

In my experience, there is some confusion in the community about how
CC-By-SA-4.0 works.  For example, some consider it plagiarism to
repurpose works as permitted by the license.  Since my experiences
with such accusations, I always take great care to carefully list out
the methods by which a modified/adapted CC-BY-SA-4.0 work complies
with §3(a)(A).  I do that first and maintain it thereafter.

After all, bare minimum adherence to Free licenses is not what we in
the copyleft-next project seek — we seek exuberant adherence that
goes above and beyond to make adaptation, modification, and
improvement as easy as possible for downstream.

CODE_OF_CONDUCT.md

@@ -82,11 +82,15 @@ This enforcement ladder is intended as a guideline. It does not limit the abilit
 This Code of Conduct applies within all community spaces, and also applies when an individual is officially representing the community in public or other spaces. Examples of representing our community include using an official email address, posting via an official social media account, or acting as an appointed representative at an online or offline event.
 
 
-## Attribution
+### Attribution / Modifications
 
-This Code of Conduct is adapted from the Contributor Covenant, version 3.0, permanently available at [https://www.contributor-covenant.org/version/3/0/](https://www.contributor-covenant.org/version/3/0/).
+Pursuant to requirements in the CC-By-SA-4.0§3(a),the copyleft-next project has preserved (and — when permitted and appropriate — amended) the following notices:
 
-Contributor Covenant is stewarded by the Organization for Ethical Source and licensed under CC BY-SA 4.0. To view a copy of this license, visit [https://creativecommons.org/licenses/by-sa/4.0/](https://creativecommons.org/licenses/by-sa/4.0/)
+  * §3(a)(A)(i/v): This Code of Conduct is adapted from the Contributor Covenant, version 3.0, permanently available at [https://www.contributor-covenant.org/version/3/0/](https://www.contributor-covenant.org/version/3/0/).
 
-For answers to common questions about Contributor Covenant, see the FAQ at [https://www.contributor-covenant.org/faq](https://www.contributor-covenant.org/faq). Translations are provided at [https://www.contributor-covenant.org/translations](https://www.contributor-covenant.org/translations). Additional enforcement and community guideline resources can be found at [https://www.contributor-covenant.org/resources](https://www.contributor-covenant.org/resources). The enforcement ladder was inspired by the work of [Mozilla’s code of conduct team](https://github.com/mozilla/inclusion).
+  * §3(a)(1)(A)(ii): The material as copyleft-next received it contained no copyright notice.  Our modifications are copyrighted as follows:
+      - Copyright (©) 2026, Bradley M. Kühn
 
+  * §3(a)(1)(A)(iii): Contributor Covenant is … licensed under CC BY-SA 4.0. To view a copy of this license, visit [https://creativecommons.org/licenses/by-sa/4.0/](https://creativecommons.org/licenses/by-sa/4.0/).  (A copy of this license [can also be found in copyleft-next's `code-of-contduct` repository](https://git.copyleft.org/copyleft-next/code-of-conduct/src/branch/main/CC-By-SA-4.0.txt)).
+
+  * §3(a)(1)(A)(iv): The material as we received it contained no disclaimer of warranties beyond those already appearing in CC-By-SA4.0§5.