mule-cli v1.1 — AI integrations

Adds first-class AI integrations on top of the v1.0 CLI.

New

• Claude Code skill (skills/mule/SKILL.md) — auto-installed by install.sh
  to ~/.claude/skills/. Ask Claude to "search/download X from eMule" and it runs
  the whole flow (engine start → search → download → report).
• MCP server (mcp/server.py) — zero-dependency MCP stdio server exposing 8
  typed tools. Works with Claude Desktop, Codex CLI, Cursor, and any MCP client.
• .mcpb bundle (mcp/manifest.json) — one-click install for Claude Desktop.
• AGENTS.md — plain-CLI playbook for shell-based agents.
• Per-client setup docs in mcp/README.md.

Notes

• All data commands speak --json; the integrations build on that.
• The MCP connector is now versioned 1.1.0 (rebuild your .mcpb to refresh it;
  the 1.0.0 bundle keeps working).