v0.2.0: Feat/interactive keys and mcp (#5)

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Added

• Interactive keypress commands — while services are running, press:
  • r — soft restart (kill all services, relaunch with current ports and no reinstall)
  • R — hard restart (kill all services, re-run install phase, re-resolve ports, relaunch)
  • s — print status summary (service name, port, PID, uptime)
  • l — cycle log filter (show output for one service at a time, then all)
  • q — quit cleanly
• Agent awareness (Claude Code MCP) — devlauncher now registers an MCP server automatically on pip install. Claude
  Code can call devlauncher_status() to see running services and ports, and devlauncher_logs(service, lines) to pull
  recent log output. No configuration required.
• Status file (.devlauncher.json) — written on startup, deleted on exit; readable by any tool that doesn't support
  MCP.
• devlauncher-mcp entry point — installed alongside devlauncher as a standalone subprocess for Claude Code's stdio
  transport.

Changed

• run_services() now returns an action string instead of exiting directly; a restart loop in cli.py handles
  soft/hard restart and quit.
• Minimum Python version bumped to 3.10 (required by the mcp dependency).

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