release(v4.9.2): README rewritten against the code, README.ko.md in step - archive the review reports and bump the lockstep version

Review loop (--review-only, --all-reviewer, fact-checked against the
code): rounds 1-3 NOT PASS with factual corrections, round 4 (@62da805)
4/4 PASS. Documentation only.

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

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

@@ -1,7 +1,7 @@
 ---
 name: multi-agent-mux-resume
 description: "Resume an existing agent (claude, antigravity/agy) conversation by UUID into a herdr session. Reads .mam/agent-sessions.yaml for the saved session/conversation id, spawns (or reuses) a herdr session of the matching name, and runs `claude -r <id>` or `agy --conversation <id>` inside. Use when you want to reattach to a previous session's context, or revive a session whose herdr died but the agent's conversation is still on disk."
-version: 4.9.1
+version: 4.9.2
 author: godopu
 license: MIT
 platforms: [linux, macos]