release(v4.9.4): the audit log follows a moved registry (Issue #57, PR #58) - archive the review reports and bump the lockstep version

Review loop (--review-only, --all-reviewer, focused on this Mac:
macOS, /usr/bin/python3 3.9.6, bash 3.2): round 1 (@63d8164) agy and
grok PASS, claude and codex NOT PASS (F1 paho via the /usr/bin/python3
fallback, F2 logs default path, R1 disk-fallback redispatch
interleaving, R2 symlinked registry), sent as a PR comment and fixed by
the author in four commits; round 2 (@a7cb90e) 4/4 PASS.

Full suite on macOS / Python 3.9.6 @a7cb90e: 1867 passed, 56 skipped,
1 error (the known #55 false positive: WAL/SHM of an agy conversation
running in another workspace). Real herdr panes and ~/.claude/projects
unchanged.

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

.agents/skills/multi-agent-mux-stop/SKILL.md

@@ -1,7 +1,7 @@
 ---
 name: multi-agent-mux-stop
 description: "Stop an agent herdr session (claude, antigravity/agy) and update .mam/agent-sessions.yaml. Default stops gracefully and marks status=stopped with conversation preserved for resume. Does NOT delete on-disk conversation artifacts (jsonl/db) — those are preserved unless --purge-conversation is passed. Use when ending a work session, switching to a different one, or cleaning up before a fresh start."
-version: 4.9.3
+version: 4.9.4
 author: godopu
 license: MIT
 platforms: [linux, macos]