release(v4.8.1): bump framework and eight skills to 4.8.1 in lockstep; archive PR #43 reviews (two rounds)

Issue #26: one .mam.env parser for the wrapper and the Python tools,
decimal integer knobs, tests on a local MQTT broker. Merge-workspace
review: round 1 (@b58edac) claude agy PASS, codex NOT PASS (R1-R4), grok
no verdict (its late report, archived as report-c9ed5b14.md, found R1 too);
round 2 (@0eec795) 4/4 PASS. Reports and 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

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

@@ -1,7 +1,7 @@
 ---
 name: multi-agent-mux-monitor
 description: "Run a long-lived reconciler that watches .mam/agent-sessions.yaml against the actual herdr/agent runtime state and reconciles them. Use when you want live visibility into which agent sessions are running, which are dead, which have stale YAML entries, and which have new session ids that haven't been recorded yet. Runs as a persistent loop (`reconcile.sh --subscribe`) that keeps going until it times out, idles out, or is interrupted."
-version: 4.8.0
+version: 4.8.1
 author: godopu
 license: MIT
 platforms: [linux, macos]