Registers a built-in 'triage' onEnter trait (via TraitRegistry +
registerTraitHookImpl) that classifies and decomposes incoming signals/issues
into todo tasks, and routes inbound PRs (dependency-bump vs feature) without
minting issues, with a Fusion-opened-PR self-loop guard. Reuses subtask-breakdown
via a new decomposeForTriage seam.
Follow-up: auto-firing the built-in async onEnter from store.moveTaskInternal
(currently fires plugin: hooks only) — invoked via the registry seam meanwhile.
f45dde22e5