feat/5-rules
dev
- app/core/clock.py: now()/today(), virtual offset (advance/set_now/reset), pluggable offset persistence hook (ADR-005) - config/rules.yaml + app/core/rules.py: YAML declares rules (params, actions, levels, reason_ru), Python evaluators implement predicates by id; dedup of open alerts, crisis never suppressed; ADR-006 colours (ADR-007) - tests: per-rule unit tests, dedup, clock, 13-day demo persona trajectory Refs #5 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>