packs: labelle check lint (event-direction + raw .global writes + cross-pack registry access) #270

labelle check lint — the enforcement "net" (Phase 5).

AST-scan for what the compile wall can't catch:

• event-direction inversions — a low pack subscribing to a high pack's event (events are inherently shared, so direction is lint-only).
• raw .global-facet writes that bypass the sanctioned API — e.g. addComponent(Locked{...}) instead of Locked.tryAcquire (reintroduces double-claim).
• cross-pack registry access on foreign names (getType/entityHasNamed) — until the two-tier registry partition (engine #650) makes it a compile error.

This is the backstop while enforcement strengthens across phases.

Part of Packs — RFC Flying-Platform/flying-platform-labelle#561 · umbrella labelle-toolkit/labelle-engine#651 · epic labelle-toolkit/labelle-engine#650.