Pass inventory and skill clients into setup; refresh on completion
transition in quest_hud_controller.gd; fix line-length and file-size
gdlint limits for pre-push.
Add NEO-132 manual QA extending NEO-123 with reward HUD and economy
verification, README capstone section, E7.M2 Ready alignment, client
completion-transition signal for inventory/skill refresh, and GdUnit
coverage for the new signal.