docs(adversary): rewrite for the CLI-per-tick redesign
The two adversary docs described the long-running daemon shape that was retired in #110. Rewrites both pages to match the current state: - adversary.md — sleep-forever container, single CLI per tick, single driver with --target-host fan-out over all 5 cluster hosts, --seed-driven random pick. New CLI flag table. New compose fragment. Local test loop via scripts/smoke-test.sh cardano_node_adversary. Closing section explains why the daemon was retired (two schedulers, targeting bias, lifecycle complexity for no benefit). - adversary-roadmap.md — restructures around CLIs, not endpoints. Each future archetype is one binary + one driver, not a new daemon endpoint. Tier list preserved; "what's behind us" replaces the daemon-era status table. Tickets section reflects the closures done in PRs #110 and #122. Also drops the dead adversary-CI.yaml badge from the top README — that workflow was retired in 9bc9b23.