chore: fill derivable placeholders, drop false ARCHITECTURE, surface the rest

.github/CODEOWNERS

@@ -1,34 +1,4 @@
 # SPDX-License-Identifier: MPL-2.0
-# CODEOWNERS - Define code review assignments for GitHub
-# See: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
-
-# Default: sole maintainer for all files
-* @hyperpolymath
-
-# Security-sensitive files require explicit ownership
-SECURITY.md @hyperpolymath
-.github/workflows/ @hyperpolymath
-.machine_readable/ @hyperpolymath
-contractiles/ @hyperpolymath
-
-# License files
-LICENSE @hyperpolymath
-LICENSES/ @hyperpolymath
-
-# Configuration
-.gitignore @hyperpolymath
-.github/ @hyperpolymath
-
-# Documentation
-README* @hyperpolymath
-CONTRIBUTING* @hyperpolymath
-CODE_OF_CONDUCT* @hyperpolymath
-GOVERNANCE* @hyperpolymath
-MAINTAINERS* @hyperpolymath
-CHANGELOG* @hyperpolymath
-ROADMAP* @hyperpolymath
-
-# Build and CI
-Justfile @hyperpolymath
-Makefile @hyperpolymath
-*.sh @hyperpolymath
+# Solo-maintained hyperpolymath repo: no owner lines by policy.
+# See hyperpolymath/standards CODEOWNERS-POLICY.adoc (Rule 1).
+# Sole-maintainer review is moot; SPDX headers carry attribution.