docs: narrative alignment for ARG/FRG framework + 2026-05-28 landings (#234)

- **README.adoc** Overview: add Language-Maturation Grades bullet
(ARG/FRG with TRG/CRG templates, pointer to nextgen-languages
dashboard).
- **ROADMAP.adoc**: bump Current State date 2026-04-04 → 2026-05-28; add
ARG/FRG Language-Maturation Framework row to Core Standards table
(Complete, PRs #229 + #232 landed 2026-05-28).

Doc-only. CHANGELOG.md auto-syncs via git-cliff workflow on conventional
commits — no manual update needed.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

README.adoc

@@ -16,6 +16,7 @@ toc::[]
 This repository serves as the canonical source for policies, templates, and specifications governing all Hyperpolymath projects. It provides:
 
 * **Language Policy** -- Which languages and tools are permitted across the ecosystem
+* **Language-Maturation Grades** -- link:adoption-readiness-grades/[ARG (Adoption Readiness)] + link:foundations-readiness-grades/[FRG (Foundations Readiness)] per-language profile templates; aggregated into the link:https://github.com/hyperpolymath/nextgen-languages[nextgen-languages] dashboard. TRG (Trust) + CRG (Compliance) profile templates live under each framework's `templates/` directory.
 * **6A2 Format Family** -- 7 machine-readable project metadata formats in A2ML (see link:SATELLITES.a2ml[SATELLITES.a2ml])
 * **Build System** -- Mustfile/justfile (no Makefiles)
 * **Stable Release Gate** -- link:release-pre-flight/V1-GATE.adoc[hard `v1.0.0` audit requirements] for all repos and multi-repo systems

ROADMAP.adoc

@@ -4,7 +4,7 @@
 
 Development roadmap for the Hyperpolymath standards and specifications repository.
 
-== Current State (2026-04-04)
+== Current State (2026-05-28)
 
 === Core Standards — Complete
 
@@ -32,6 +32,10 @@ Development roadmap for the Hyperpolymath standards and specifications repositor
 |Component Readiness Grades (X, F, E, D, C, B, A)
 |Complete
 
+|**ARG/FRG Language-Maturation Framework**
+|Adoption Readiness Grades (`adoption-readiness-grades/`) + Foundations Readiness Grades (`foundations-readiness-grades/`); TRG/CRG per-language profile templates; aggregated into nextgen-languages dashboard
+|Complete (2026-05-28, PRs #229 + #232)
+
 |**K9 Self-Validating Components**
 |Must/Trust/Dust validation + deployment in single file
 |Complete