Clear _issue_contract_patch when GET includes the instance row (NEO-122
precedent); wire faction_standing_received for reward re-paint; add regression
test; update E7M4 decomposition docs and review strikethroughs.
Shift+C issues prototype contract via contract_client; contract_hud_controller
shows encounter objective, deny copy, and completion reward transition.
Includes scene wiring, GdUnit tests, manual QA, and README.
VinPropane