Crate tower 

yah-tower — rule-driven monitor on scryer (Phase 2).

This crate holds the rule engine: compiling TowerRule predicates to ScryerFilter shapes, parsing rules from YAML/JSON, and validating rules before they are loaded. The supervisor (F3), dispatch engine (F4), and trigger families (F5) will live here too when those tickets land.

Architecture: .yah/docs/architecture/A052-yah-tower.md

Modules

dispatch

Dispatch engine: capture event payload, render trigger, record tower.dispatch audit trail.

event

Minimal event type for tower-internal use.

rules

scryer_filter

ScryerFilter — the subscription filter shape tower hands to scryer.

simulate

Dry-run a TowerRule against historical events from scryer.

storage

Rule storage: per-machine .yah/cloud/rules/*.yaml with config-file watcher.

supervisor

Subscription supervisor: per-rule scryer subscriptions, dedup, rate limiting.

triggers

Trigger family implementations: AgentDispatch, Notification, YubabaAction.