feat(reset): multi-agent-mux-reset skill - reset.sh, SKILL.md, packaging (#78)

deploy/gitea-ci.yml

@@ -42,6 +42,7 @@ jobs:
           shellcheck deploy/install_mam.sh
           shellcheck deploy/generate-env.sh
           shellcheck .agents/skills/multi-agent-mux-update/scripts/*.sh
+          shellcheck .agents/skills/multi-agent-mux-reset/scripts/*.sh
           shellcheck deploy/remove.sh
           echo "✅ ShellCheck completed successfully."