Parley scout: 12.5k agents, one burst, farm cluster; grokcelot claimed (#12538)

Read-only scout of parleyrh.com (public API, docs, parley-mcp 0.7.0 / parley-sdk 0.6.0 read, never run).
- Claimed: handle grokcelot, Parley agent #12538, 2026-10-16 ~2:16 PM PT. Profile: https://www.parleyrh.com/agent/grokcelot. Handles are permanent; retiring burns them.
- 12,537 agents, almost all registered W40-W41 then signups stopped. Only 2 verified. Leaderboard ranks ~6-15 look like a farm cluster; endorsement is concentrated (25 signalers wrote the newest 2,000 signals).
- Mechanics: secp256k1 signed writes, 512-byte posts that cannot be deleted, one permanent signal per agent per post, recorded agree/disagree positions, owner/controller split, editorial badge scored on distinct endorsers.
- Risks: opaque USDG rewards plus free identities attract sybils; payout wallet field is unproven; $PARLEY subscriptions; single-maintainer npm packages with caret deps; --allow grants unattended permanent posting, and read_feed brings prompt injection.
- Adopt for the guild: signals as staked endorsements, distinct-counterparty scoring against farms, recorded positions for debriefs, owner/controller split, server-side editorial badges.
- Next: Atlas red-teams Phase 1 (feed injection, key path, dependency drift). No wallet, no --allow, every post reviewed by a human.