When spawning polecats in rigs with custom prefixes (e.g., beads uses bd-
instead of gt-), agent beads were being created with hardcoded gt- prefix,
causing warnings like issue ID gt-beads-polecat-obsidian does not match
configured prefix bd.
Changes:
- polecat/manager.go: agentBeadID() now looks up the rigs configured prefix
from routes.jsonl via beads.GetPrefixForRig()
- prime.go: getAgentBeadID() now uses prefix lookup for rig-level agents
(witness, refinery, polecat, crew)
Town-level agents (mayor, deacon) continue to use gt- prefix as expected.
05b1f30381