Add orchestrate skill: main-actor pattern + mav-agent/mav-tmux wrappers

One bot owns the chat and delegates coding to persistent tmux sub-agents,
using a .done file marker for a reliable handoff (status/wait/result).
Includes README + install.sh for one-command setup.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

install.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# install.sh — drop the orchestrate skill + wrappers into the current user's env.
+set -euo pipefail
+HERE="$(cd "$(dirname "$0")" && pwd)"
+
+SKILL_DIR="$HOME/.claude/skills/orchestrate"
+BIN_DIR="$HOME/.local/bin"
+
+mkdir -p "$SKILL_DIR" "$BIN_DIR"
+cp "$HERE/skill/SKILL.md" "$SKILL_DIR/SKILL.md"
+cp "$HERE/bin/mav-agent" "$BIN_DIR/mav-agent"
+cp "$HERE/bin/mav-tmux" "$BIN_DIR/mav-tmux"
+chmod +x "$BIN_DIR/mav-agent" "$BIN_DIR/mav-tmux"
+
+echo "installed:"
+echo "  skill   -> $SKILL_DIR/SKILL.md"
+echo "  mav-agent -> $BIN_DIR/mav-agent"
+echo "  mav-tmux  -> $BIN_DIR/mav-tmux"
+
+case ":$PATH:" in
+  *":$BIN_DIR:"*) ;;
+  *) echo "NOTE: add $BIN_DIR to your PATH to use mav-agent/mav-tmux." ;;
+esac
+
+command -v tmux >/dev/null 2>&1 || echo "WARN: tmux not found — required."
+command -v claude >/dev/null 2>&1 || echo "NOTE: claude not on PATH (needed for claude agents)."
+command -v codex  >/dev/null 2>&1 || echo "NOTE: codex not on PATH (needed for --codex agents)."
+echo "done. /orchestrate is now available in Claude Code."