feat(cli): 1.31.5 — JSON peer list lifts role to top level + skill renders it

After 1.31.4 the human renderer surfaced role and groups, but launched-
session LLMs still dropped them when they called peer list --json and
built their own tables.

- Top-level role field. The broker returns role nested under
  profile.role; the CLI now lifts it to a top-level role field at
  parse time so it is the second-most-visible JSON field after
  displayName. profile.role is preserved.
- Updated claudemesh skill SKILL.md peer-list section with the full
  JSON shape (memberPubkey, sessionId, role, profile, isSelf,
  isThisSession) plus explicit guidance to render role + groups in
  any peer table inside a launched session.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "claudemesh-cli",
-  "version": "1.31.4",
+  "version": "1.31.5",
   "description": "Peer mesh for Claude Code sessions — CLI + MCP server.",
   "keywords": [
     "claude-code",