- Update all AGENTS.md watermarks to current HEAD (251d160)
- dev/AGENTS.md: document dev-poll's early direct-merge scan (before lock
check) — approved PRs now merge without waiting for active dev sessions;
chore/gardener PRs merge without issue numbers in branch name
- planner/AGENTS.md: document dispatch-idle-formulas phase (step 4); note
that planner reads both factory and project-specific formulas; clarify
that all planner artifacts use $PROJECT_REPO_ROOT, not $FACTORY_ROOT
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>