feat: add trail hunter capture pressure

[christopherjnelson]

Summary

• Add optional seeded trail-hunter-v1 pressure, routed only from visible infected cells.
• Resolve co-located capture in the deterministic engine, remove captured agents, and leave their infected territory abandoned.
• Advance pressure before active-roster provider dispatch; commit terminal outcomes without model calls and retain capture alerts, safe exports, and World Lab status.
• Keep casual-cleaner and legacy multi-agent execution available.

Validation

• pnpm validate passed.
• pnpm test:e2e passed.
• Focused capture, terminal, export, and post-capture attempt-attribution tests passed.