fix: address review — WOODPECKER_SERVER var, update AGENTS.md for new predictor
- Fix bug: replace WOODPECKER_URL with WOODPECKER_SERVER throughout
run-predictor.toml (CI trends were silently skipped)
- Update AGENTS.md: new Predictor section reflecting predictor/ directory,
formula-based architecture, daily 06:00 cron, supersedes legacy
prediction-agent.sh
- Update directory layout, formula-session.sh sourced-by list, label table,
and planner future-direction anchor
- Remove redundant Completion section from formula (PROMPT_FOOTER handles it)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>