Claude Code 2.1.224: self-hosted runners and cross-session agent messaging

Adds `claude self-hosted-runner`, letting Team and Enterprise plans run web, mobile, and desktop sessions on their own machines or containers, plus cross-session `SendMessage`/`ListAgents` so sessions on any of your machines can message each other. Also expands sandbox credential masking and changes what the feedback survey uploads.

Tool: claude-code · Version: 2.1.224 · Significance: 4/5 · feature, security, fix, api-change