- `pic kv ls --group` / `pic kv get --group` (mutually exclusive with --app)
hit the M4 admin API; client group_kv_list/group_kv_get.
- collections journey: a script writes a shared KV value, the operator lists +
fetches it via the admin API with no script.
- docs: §11.6 + CLAUDE.md record M3 quotas + M4 read-only admin API.
Completes M4.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>