Clarify State Hub vs activity-core event subjects, require STATE-WP-0069
draft in T02, add scan exclusions and ready gate, drop inter-hub-haskell
from active sweep, and reorder sequencing.
Inventory 22k+ legacy workstream occurrences across 73 registered repos and
add a reproducible scan tool plus an eight-task workplan to migrate prose,
events, templates, and code to workplan while preserving compatibility bridges.
