The canonical rule-based engine from §"Tagging engines, layered §1"
of TTP_TAGGING.md was fully implemented but never instantiated as a
composite child — pure pattern rules (R0014/R0017/R0023/... 23 rules
total) had no tagger to dispatch them.
- Add `RuleEngineTagger(Tagger)` adapter in rule_engine.py wrapping
`RuleEngine.evaluate()`. `HANDLES = {command, http_request,
auth_attempt, payload}` — the source kinds whose rules typically
live outside any per-source lifter.
- Adapter's `watch_store()` filters via `_is_engine_owned` so the
engine's dispatch index excludes lifter-claimed rules
(`match.kind: lifter:*`) and stays disjoint from per-lifter ownership.
- Prepend `RuleEngineTagger` to the `CompositeTagger` lifter list so
generic pattern rules dispatch before per-source cross-event logic.
- Composes with E.3.18a (worker hydrates `watch_store`) and E.3.18b
(worker fans session payloads into per-`command` events) — together
these three commits make R0001–R0030 actually fire at runtime.