release(v4.8.4): bump framework and eight skills to 4.8.4 in lockstep; archive PR #47 reviews (two rounds)

The .claude/skills check accepts both local layouts and fails on a dangling
link. Review: round 1 (@e1ed270) claude agy grok PASS, codex NOT PASS (a
dangling top-level link was skipped); fixed in 150b493; round 2 4/4 PASS.
Reports and the round-2 identity sidecars go to .agents/reports/<session>/.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCgu9Fa9iT7TbJUSzdq4Ff

BOOTSTRAP.md

@@ -2,7 +2,7 @@
 
 This document guides you through the setup and initialization procedures required to adopt the `herdr_agent_orchestration` orchestration and messaging backplane workflow in a new project, enabling a new developer or agent to get up and running quickly.
 
-[![Version: v4.8.3](https://img.shields.io/badge/version-v4.8.3-blue.svg)](VERSIONS.md)
+[![Version: v4.8.4](https://img.shields.io/badge/version-v4.8.4-blue.svg)](VERSIONS.md)
 
 A new agent can follow the steps in this guide sequentially to establish a stable and reliable initial environment.